{"id":4668,"date":"2025-12-18T23:34:38","date_gmt":"2025-12-18T22:34:38","guid":{"rendered":"https:\/\/www.penagrup.com\/products\/extrusion\/husillos-dobles-contrarrotantes\/"},"modified":"2026-06-16T16:24:04","modified_gmt":"2026-06-16T14:24:04","slug":"parallel-counter-rotating-twin-screw-assemblies","status":"publish","type":"page","link":"https:\/\/www.penagrup.com\/en\/products\/extrusion\/parallel-counter-rotating-twin-screw-assemblies\/","title":{"rendered":"Parallel Counter-Rotating Twins"},"content":{"rendered":"\n<div class=\"wp-block-group alignfull\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\r\n\t\t<div  class=\"block-3c8465c3-e2a5-418f-9b49-66cf1a56aa34 areoi-element container\">\r\n\t\t\t\r\n\t\t\t\n\r\n\t\t<nav  \r\n\t\t\t \r\n\t\t\tclass=\"block-4061626f-9335-45d5-b1d6-7e4f8d4e33a5 breadcrumb\" \r\n\t\t\taria-label=\"breadcrumb\"\r\n\t\t\tstyle=\"--bs-breadcrumb-divider: '&gt;';\"\r\n\t\t>\r\n\t\t\t<ol class=\"breadcrumb\">\r\n\t\t\t\t<li class=\"breadcrumb-item\"><a href=\"https:\/\/www.penagrup.com\/en\/\">Home<\/a><\/li><li class=\"breadcrumb-item\"><a href=\"https:\/\/www.penagrup.com\/en\/products\/\">Products<\/a><\/li><li class=\"breadcrumb-item\"><a href=\"https:\/\/www.penagrup.com\/en\/products\/extrusion\/\">Extrusion<\/a><\/li><li class=\"breadcrumb-item active\" aria-current=\"page\">Parallel Counter-Rotating Twins<\/li>\r\n\t\t\t<\/ol>\r\n\t\t<\/nav>\r\n\t\n\n\r\n\t\t<div  class=\"block-92431121-1609-46b3-86c2-1e9b86dbdc94 row areoi-element\">\r\n\t\t\t\r\n\r\n\t\t\t\n\r\n\t\t<div  class=\"block-26fd714b-9202-46ef-afa7-9fc1d720fddc col areoi-element\">\r\n\t\t\t\r\n\t\t\t\n\n<h1 class=\"wp-block-heading h2\">Parallel Counter-Rotating Twins<\/h1>\n\n\n\n<p class=\"has-text-color has-link-color wp-elements-3b0fc4dffa3547137fa56891183b2fd8 wp-block-paragraph\" style=\"color:#202020\">Twin parallel screw and barrel assemblies for compounding, recycling, PVC foam and technical extrusion applications.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">PENA\u00ae parallel twin-screw assemblies combine outstanding dimensional stability with highly efficient mixing performance. They are manufactured according to the required L\/D ratio and feeding, venting and discharge configuration, with nitrided or bimetallic solutions selected according to wear and corrosion requirements.<\/p>\n\n\n\r\n\t\t<div  class=\"block-83406c94-dada-47ea-ab46-b05ed85eb0a0 areoi-element\">\r\n\t\t\t\r\n\t\t\t\n\n<figure class=\"wp-block-image size-full bordered-image mb-0\"><img loading=\"lazy\" decoding=\"async\" width=\"2560\" height=\"847\" src=\"http:\/\/www.penagrup.com\/wp-content\/uploads\/2026\/03\/DSC5447-2-scaled.jpg\" alt=\"\" class=\"wp-image-4134\" srcset=\"https:\/\/www.penagrup.com\/wp-content\/uploads\/2026\/03\/DSC5447-2-scaled.jpg 2560w, https:\/\/www.penagrup.com\/wp-content\/uploads\/2026\/03\/DSC5447-2-300x99.jpg 300w, https:\/\/www.penagrup.com\/wp-content\/uploads\/2026\/03\/DSC5447-2-1024x339.jpg 1024w, https:\/\/www.penagrup.com\/wp-content\/uploads\/2026\/03\/DSC5447-2-768x254.jpg 768w, https:\/\/www.penagrup.com\/wp-content\/uploads\/2026\/03\/DSC5447-2-1536x508.jpg 1536w, https:\/\/www.penagrup.com\/wp-content\/uploads\/2026\/03\/DSC5447-2-2048x678.jpg 2048w\" sizes=\"auto, (max-width: 2560px) 100vw, 2560px\" \/><\/figure>\n\n\r\n\t\t\t \r\n\t\t<\/div>\r\n\t\n \r\n\t\t\t\r\n\t\t<\/div>\r\n\t\n \r\n\t\t<\/div>\r\n\t\n\r\n\t\t\t \r\n\t\t<\/div>\r\n\t<\/div><\/div>\n\n\n\n<section class=\"wp-block-group app-advantage app-advantage-product-page\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\r\n\t\t<div  class=\"block-2c817c7a-3211-4d39-ba45-f830d0d97a18 areoi-element app-advantage__group\">\r\n\t\t\t\r\n\t\t<div class=\"areoi-background  \">\r\n\t\t\t<div class=\"container-fluid\" style=\"padding: 0;\">\r\n\t\t\t\t<div class=\"row justify-content-start\">\r\n\t\t\t\t\t<div class=\"col \">\r\n\t\t\t            <div class=\"areoi-background__color\" \r\n\t                        \tstyle=\"background: rgba(248, 249, 251,1)\">\r\n\t                        <\/div>\r\n\r\n\t                    \r\n\r\n\t                    \r\n\r\n\t                    \r\n\t    \t\t\t<\/div>\r\n\t    \t\t<\/div>\r\n\t    \t<\/div>\r\n\t    <\/div>\r\n\t\r\n\t\t\t\n\r\n\t\t<div  class=\"block-4ff3212a-33f9-42ef-95dd-5fb80113f6a3 areoi-element container\">\r\n\t\t\t\r\n\t\t\t\n\n<h3 class=\"wp-block-heading app-advantage__title\" style=\"font-style:normal;font-weight:500\">Parallel Twin Barrels<\/h3>\n\n\n\n<h4 class=\"wp-block-heading has-text-color has-link-color wp-elements-7d6c8b6a0ef757e3a7547772a5be0cc9\" style=\"color:#af0b3a;font-style:normal;font-weight:500\"><strong>Manufacturing &amp; Configurations<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Typical lengths range from 16 L\/D on older machines to 36 L\/D on modern extrusion systems.<\/li>\n\n\n\n<li>Venting sections are commonly incorporated, with feeding integrated into the barrel or mounted as a separate flanged unit.<\/li>\n\n\n\n<li>Two construction options are available:<\/li>\n\n\n\n<li>A) One-piece nitrided barrel.<\/li>\n\n\n\n<li>B) Nitrided outer body with replaceable inner liner.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h4 class=\"wp-block-heading has-text-color has-link-color wp-elements-36e054820ae50aa497820b6e20e3aa6e\" style=\"color:#af0b3a;font-style:normal;font-weight:500\"><strong>Technical Specifications<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Construction A (one-piece): 1.8550 steel, nitrided to approximately 70 HRC with an effective nitrided layer of around 0.5 mm.<\/li>\n\n\n\n<li>Construction B: Nitrided 1.8550 outer body combined with a bimetallic inner liner manufactured from centrifugally cast tubes.<\/li>\n\n\n\n<li>Bimetallic liner technology available up to 4,500 mm in length with guaranteed dimensional accuracy.<\/li>\n<\/ul>\n\n\r\n\t\t\t \r\n\t\t<\/div>\r\n\t\n\n\r\n\t\t<div  class=\"block-61a06a52-bc9a-412f-81f1-cf04c2d5e8b1 areoi-element\">\r\n\t\t\t\r\n\t\t\t\n\r\n\t\t<div  class=\"block-faf82c1e-57d3-4480-9f2c-cc465b9e9c10 areoi-element container\">\r\n\t\t\t\r\n\t\t\t\n\r\n\t\t<div  class=\"block-276b315c-c20e-481a-9254-44d995a9e1e5 col areoi-element col-12\">\r\n\t\t\t\r\n\t\t\t\n\n<h3 class=\"wp-block-heading block-table__title\" style=\"font-style:normal;font-weight:500\">Bimetallic Barrel Alloys<\/h3>\n\n\n\n<section class=\"material-cards\">\n        <article style=\"border-color: #888888\">\n        <span style=\"color: #888888\">N<\/span>\n        <h3>NITRIDED<\/h3>\n        <small>67\/70 HRC<\/small>\n        <ul>\n            <li>\n                Abrasion                <i><b style=\"width: 40%; background: #888888\"><\/b><\/i>\n                <strong style=\"color: #888888\">MEDIUM<\/strong>\n            <\/li>\n            <li>\n                Corrosion                <i><b style=\"width: 20%; background: #888888\"><\/b><\/i>\n                <strong style=\"color: #888888\">LOW<\/strong>\n            <\/li>\n        <\/ul>\n        <p>A cost-effective solution for applications with moderate wear and limited chemical aggressiveness.<\/p>\n    <\/article>\n        <article style=\"border-color: #e89218\">\n        <span style=\"color: #e89218\">40<\/span>\n        <h3>PENA 40<\/h3>\n        <small>Fe\/Cr \u00b7 64-69 HRC<\/small>\n        <ul>\n            <li>\n                Abrasion                <i><b style=\"width: 80%; background: #e89218\"><\/b><\/i>\n                <strong style=\"color: #e89218\">VERY HIGH+<\/strong>\n            <\/li>\n            <li>\n                Corrosion                <i><b style=\"width: 40%; background: #e89218\"><\/b><\/i>\n                <strong style=\"color: #e89218\">MEDIUM<\/strong>\n            <\/li>\n        <\/ul>\n        <p>Engineered for maximum resistance to abrasive wear, ideal for highly filled compounds and mineral-loaded formulations.<\/p>\n    <\/article>\n        <article style=\"border-color: #06799c\">\n        <span style=\"color: #06799c\">51<\/span>\n        <h3>PENA 51<\/h3>\n        <small>Ni\/Co \u00b7 51-54 HRC<\/small>\n        <ul>\n            <li>\n                Abrasion                <i><b style=\"width: 40%; background: #06799c\"><\/b><\/i>\n                <strong style=\"color: #06799c\">MEDIUM<\/strong>\n            <\/li>\n            <li>\n                Corrosion                <i><b style=\"width: 100%; background: #06799c\"><\/b><\/i>\n                <strong style=\"color: #06799c\">MAXIMUM++<\/strong>\n            <\/li>\n        <\/ul>\n        <p>Specifically developed for fluoropolymers and highly corrosive compounds, providing outstanding protection against aggressive chemical attack.<\/p>\n    <\/article>\n        <article style=\"border-color: #ad1d39\">\n        <span style=\"color: #ad1d39\">68<\/span>\n        <h3>PENA 68<\/h3>\n        <small>Ni\/Cr\/WC \u00b7 56-60 HRC<\/small>\n        <ul>\n            <li>\n                Abrasion                <i><b style=\"width: 60%; background: #ad1d39\"><\/b><\/i>\n                <strong style=\"color: #ad1d39\">HIGH<\/strong>\n            <\/li>\n            <li>\n                Corrosion                <i><b style=\"width: 80%; background: #ad1d39\"><\/b><\/i>\n                <strong style=\"color: #ad1d39\">VERY HIGH+<\/strong>\n            <\/li>\n        <\/ul>\n        <p>An advanced balance of abrasion resistance and corrosion protection, recommended for demanding technical applications.<\/p>\n    <\/article>\n        <article style=\"border-color: #1c1c1c\">\n        <span style=\"color: #1c1c1c\">80<\/span>\n        <h3>PENA 80<\/h3>\n        <small>Ni\/Cr\/WC . Carburo 2160 HV \/ Matriz 900 HV<\/small>\n        <ul>\n            <li>\n                Abrasion                <i><b style=\"width: 100%; background: #1c1c1c\"><\/b><\/i>\n                <strong style=\"color: #1c1c1c\">MAXIMUM++<\/strong>\n            <\/li>\n            <li>\n                Corrosion                <i><b style=\"width: 100%; background: #1c1c1c\"><\/b><\/i>\n                <strong style=\"color: #1c1c1c\">MAXIMUM++<\/strong>\n            <\/li>\n        <\/ul>\n        <p>Our highest-performance alloy, designed to withstand extreme abrasion and corrosion in the most demanding processing conditions.<\/p>\n    <\/article>\n    <\/section>\n\n\n \r\n\t\t\t\r\n\t\t<\/div>\r\n\t\n\r\n\t\t\t \r\n\t\t<\/div>\r\n\t\n\r\n\t\t\t \r\n\t\t<\/div>\r\n\t\n\n\r\n\t\t<div  class=\"block-2c817c7a-3211-4d39-ba45-f830d0d97a18 areoi-element app-advantage__group\">\r\n\t\t\t\r\n\t\t<div class=\"areoi-background  \">\r\n\t\t\t<div class=\"container-fluid\" style=\"padding: 0;\">\r\n\t\t\t\t<div class=\"row justify-content-start\">\r\n\t\t\t\t\t<div class=\"col \">\r\n\t\t\t            <div class=\"areoi-background__color\" \r\n\t                        \tstyle=\"background: rgba(248, 249, 251,1)\">\r\n\t                        <\/div>\r\n\r\n\t                    \r\n\r\n\t                    \r\n\r\n\t                    \r\n\t    \t\t\t<\/div>\r\n\t    \t\t<\/div>\r\n\t    \t<\/div>\r\n\t    <\/div>\r\n\t\r\n\t\t\t\n\r\n\t\t<div  class=\"block-4ff3212a-33f9-42ef-95dd-5fb80113f6a3 areoi-element container\">\r\n\t\t\t\r\n\t\t\t\n\n<h4 class=\"wp-block-heading app-advantage__title has-text-color has-link-color wp-elements-fd2ebc99cc50f999d943d249781360a9\" style=\"color:#af0b3a;font-style:normal;font-weight:500\"><strong>Technical Advantages Barrels<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>For Construction B, refurbishment costs are significantly reduced by reusing the outer body.<\/li>\n\n\n\n<li>Internal alloy selection can be optimised according to polymer type, mineral fillers, corrosion level and operating temperature.<\/li>\n\n\n\n<li>The nitrided outer body prevents seizure during future liner replacement operations.<\/li>\n<\/ul>\n\n\r\n\t\t\t \r\n\t\t<\/div>\r\n\t\n\n\r\n\t\t<div  class=\"block-9df06194-2b08-4688-8abd-e115e62699d5 areoi-element app-advantage__group\">\r\n\t\t\t\r\n\t\t<div class=\"areoi-background  \">\r\n\t\t\t<div class=\"container-fluid\" style=\"padding: 0;\">\r\n\t\t\t\t<div class=\"row justify-content-start\">\r\n\t\t\t\t\t<div class=\"col \">\r\n\t\t\t            <div class=\"areoi-background__color\" \r\n\t                        \tstyle=\"background: rgba(248, 249, 251,1)\">\r\n\t                        <\/div>\r\n\r\n\t                    \r\n\r\n\t                    \r\n\r\n\t                    \r\n\t    \t\t\t<\/div>\r\n\t    \t\t<\/div>\r\n\t    \t<\/div>\r\n\t    <\/div>\r\n\t\r\n\t\t\t\n\r\n\t\t<div  class=\"block-19c3853b-50e1-4b29-b9f5-1ac7b360f734 areoi-element container\">\r\n\t\t\t\r\n\t\t\t\n\n<h4 class=\"wp-block-heading app-advantage__title has-text-color has-link-color wp-elements-b602a410bb0659fa3a350ad3bf81e624\" style=\"color:#af0b3a;font-style:normal;font-weight:500\"><strong>Limits &amp; Capabilities<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Maximum one-piece bimetallic barrel length: 4,500 mm.<\/li>\n\n\n\n<li>Maximum one-piece nitrided barrel length: 6,000 mm.<\/li>\n<\/ul>\n\n\r\n\t\t\t \r\n\t\t<\/div>\r\n\t\n\r\n\t\t\t \r\n\t\t<\/div>\r\n\t\n\r\n\t\t\t \r\n\t\t<\/div>\r\n\t\n\r\n\t\t\t \r\n\t\t<\/div>\r\n\t<\/div><\/section>\n\n\n\n<section class=\"wp-block-group block-table\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><\/div><\/section>\n\n\n\n<section class=\"wp-block-group app-advantage app-advantage-product-page\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\r\n\t\t<div  class=\"block-e96c6712-ce3d-4928-9f8b-96099dbc5bda areoi-element app-advantage__group\">\r\n\t\t\t\r\n\t\t\t\n\r\n\t\t<div  class=\"block-3942c7c9-e830-40c0-8e8a-8de01f7b98fb areoi-element container\">\r\n\t\t\t\r\n\t\t\t\n\n<h3 class=\"wp-block-heading app-advantage__title\" style=\"font-style:normal;font-weight:500\">Parallel Twin Screws<\/h3>\n\n\n\n<h4 class=\"wp-block-heading has-text-color has-link-color wp-elements-e7821003f34b83692d50594fa5db8eb4\" style=\"color:#af0b3a;font-style:normal;font-weight:500\"><strong>Typical Materials<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Nitriding steels: 1.8509 (41CrAlMo7), 1.8550 (34CrAlNi7), 1.8519 (31CrMoV9) and 1.8515 (31CrMo12).<\/li>\n\n\n\n<li>Quenched and tempered alloy steels with tensile strength of approximately 850\u2013950 N\/mm\u00b2.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h4 class=\"wp-block-heading has-text-color has-link-color wp-elements-36e054820ae50aa497820b6e20e3aa6e\" style=\"color:#af0b3a;font-style:normal;font-weight:500\"><strong>Technical Specifications<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Following machining and polishing, screws are nitrided to a surface hardness approaching 70 HRC, with an effective nitrided layer of approximately 0.5 mm.<\/li>\n\n\n\n<li>Typical lengths range from 24 to 36 L\/D, although older systems may operate at 16 L\/D.<\/li>\n\n\n\n<li>For severe applications or when paired with bimetallic barrels, welded flight protection is applied. Optional chrome plating is available on the discharge section for specific applications.<\/li>\n<\/ul>\n\n\r\n\t\t\t \r\n\t\t<\/div>\r\n\t\n\n\r\n\t\t<div  class=\"block-61a06a52-bc9a-412f-81f1-cf04c2d5e8b1 areoi-element\">\r\n\t\t\t\r\n\t\t\t\n\r\n\t\t<div  class=\"block-faf82c1e-57d3-4480-9f2c-cc465b9e9c10 areoi-element container\">\r\n\t\t\t\r\n\t\t\t\n\r\n\t\t<div  class=\"block-bf0374ff-602a-462a-89a9-a8f24e928a1945 row areoi-element\">\r\n\t\t\t\r\n\r\n\t\t\t\n\r\n\t\t<div  class=\"block-92e21120-5f97-40c9-ba15-22dc4fdb89ee col areoi-element col-12\">\r\n\t\t\t\r\n\t\t\t\n\n<h3 class=\"wp-block-heading block-table__title\" style=\"font-style:normal;font-weight:500\">Bimetallic Screws Alloys<\/h3>\n\n\n\n<section class=\"material-cards\">\n        <article style=\"border-color: #888888\">\n        <span style=\"color: #888888\">N<\/span>\n        <h3>NITRIDED<\/h3>\n        <small>67\/70 HRC<\/small>\n        <ul>\n            <li>\n                Abrasion                <i><b style=\"width: 40%; background: #888888\"><\/b><\/i>\n                <strong style=\"color: #888888\">MEDIUM<\/strong>\n            <\/li>\n            <li>\n                Corrosion                <i><b style=\"width: 20%; background: #888888\"><\/b><\/i>\n                <strong style=\"color: #888888\">LOW<\/strong>\n            <\/li>\n        <\/ul>\n        <p>An economical solution for standard applications with low wear requirements.<\/p>\n    <\/article>\n        <article style=\"border-color: #e89218\">\n        <span style=\"color: #e89218\">160<\/span>\n        <h3>PENA 160<\/h3>\n        <small>Ni\u2013Cr \u00b7 &gt;1100 HV<\/small>\n        <ul>\n            <li>\n                Abrasion                <i><b style=\"width: 80%; background: #e89218\"><\/b><\/i>\n                <strong style=\"color: #e89218\">VERY HIGH+<\/strong>\n            <\/li>\n            <li>\n                Corrosion                <i><b style=\"width: 40%; background: #e89218\"><\/b><\/i>\n                <strong style=\"color: #e89218\">MEDIUM<\/strong>\n            <\/li>\n        <\/ul>\n        <p>High hardness combined with excellent thermal stability and chemical resistance.<\/p>\n    <\/article>\n        <article style=\"border-color: #ad1d39\">\n        <span style=\"color: #ad1d39\">172<\/span>\n        <h3>PENA 172<\/h3>\n        <small>Aleaci\u00f3n refinada \u00b7 58\u201360 HRC<\/small>\n        <ul>\n            <li>\n                Abrasion                <i><b style=\"width: 60%; background: #ad1d39\"><\/b><\/i>\n                <strong style=\"color: #ad1d39\">HIGH<\/strong>\n            <\/li>\n            <li>\n                Corrosion                <i><b style=\"width: 80%; background: #ad1d39\"><\/b><\/i>\n                <strong style=\"color: #ad1d39\">VERY HIGH+<\/strong>\n            <\/li>\n        <\/ul>\n        <p>Excellent adhesion and oxidation resistance, ideal for humid and corrosive operating environments.<\/p>\n    <\/article>\n        <article style=\"border-color: #1c1c1c\">\n        <span style=\"color: #1c1c1c\">175<\/span>\n        <h3>PENA 175<\/h3>\n        <small>PTA con WC \u00b7 &gt;62 HRC<\/small>\n        <ul>\n            <li>\n                Abrasion                <i><b style=\"width: 100%; background: #1c1c1c\"><\/b><\/i>\n                <strong style=\"color: #1c1c1c\">MAXIMUM++<\/strong>\n            <\/li>\n            <li>\n                Corrosion                <i><b style=\"width: 100%; background: #1c1c1c\"><\/b><\/i>\n                <strong style=\"color: #1c1c1c\">MAXIMUM++<\/strong>\n            <\/li>\n        <\/ul>\n        <p>Maximum protection against severe abrasion, mineral fillers and extreme wear conditions.<\/p>\n    <\/article>\n    <\/section>\n\n\n \r\n\t\t\t\r\n\t\t<\/div>\r\n\t\n \r\n\t\t<\/div>\r\n\t\n\r\n\t\t\t \r\n\t\t<\/div>\r\n\t\n\r\n\t\t\t \r\n\t\t<\/div>\r\n\t\n\n\r\n\t\t<div  class=\"block-2c817c7a-3211-4d39-ba45-f830d0d97a18 areoi-element app-advantage__group\">\r\n\t\t\t\r\n\t\t\t\n\r\n\t\t<div  class=\"block-4ff3212a-33f9-42ef-95dd-5fb80113f6a3 areoi-element container\">\r\n\t\t\t\r\n\t\t\t\n\n<h4 class=\"wp-block-heading app-advantage__title has-text-color has-link-color wp-elements-f72de153b2b5c9e16fe1bd000fff428e\" style=\"color:#af0b3a;font-style:normal;font-weight:500\"><strong>Technical Advantages Screws<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Extended service life through the application of welded protection only where wear occurs, typically on the flights.<\/li>\n\n\n\n<li>Coating selection matched to the barrel wear system, whether nitrided or bimetallic.<\/li>\n\n\n\n<li>Complete repair, refurbishment and rebuilding services available in-house.<\/li>\n<\/ul>\n\n\r\n\t\t\t \r\n\t\t<\/div>\r\n\t\n\r\n\t\t\t \r\n\t\t<\/div>\r\n\t\n\n\r\n\t\t<div  class=\"block-b3661a26-19aa-463e-9167-fa165846061d areoi-element container\">\r\n\t\t\t\r\n\t\t\t\n\r\n\t\t<div  class=\"block-1c9832f2-c197-4ec2-b9bd-4cbeeb33274a row areoi-element\">\r\n\t\t\t\r\n\r\n\t\t\t\n\r\n\t\t<div  class=\"block-3071bb7f-ce7e-4600-89b4-15bfe5caac27 col areoi-element\">\r\n\t\t\t\r\n\t\t\t\n\n<h3 class=\"wp-block-heading has-text-align-left services-block-products-title\">See Also<\/h3>\n\n\n\r\n    <div class=\"services-block services-block--products\">\r\n        <div class=\"services-block-wrap\">\r\n                            <div class=\"row\">\r\n                    \r\n                                                    <div class=\"col-md-4\">\r\n                                <div class=\"services-block-item\">\r\n                                    <a href=\"https:\/\/www.penagrup.com\/en\/products\/extrusion\/single-screw-and-barrel-assemblies\/\" class=\"stretched-link\"><\/a>\r\n                                    <figure class=\"services-block-item-image service\">\r\n                                        <img decoding=\"async\" src=\"https:\/\/www.penagrup.com\/wp-content\/uploads\/2025\/12\/huisillos.png\" alt=\"Single Screw &amp; Barrel\">\r\n                                    <\/figure>\r\n                                    <div class=\"services-block-item-content\">\r\n                                        <div class=\"services-block-item-info\">\r\n                                            <h3>Single Screw &amp; Barrel<\/h3>\r\n                                            <p><\/p>\r\n                                        <\/div>\r\n                                        <a class=\"services-block-item-link\" href=\"https:\/\/www.penagrup.com\/en\/products\/extrusion\/single-screw-and-barrel-assemblies\/\">MORE INFORMATION                                            <img decoding=\"async\" src=\"https:\/\/www.penagrup.com\/wp-content\/themes\/genesis-child\/assets\/img\/arrow-right.svg\" width=\"16px\" height=\"12px\"\r\n                                                alt=\"arrow-icon\"><\/a>\r\n\r\n                                    <\/div>\r\n                                <\/div>\r\n                            <\/div>\r\n                        \r\n                    \r\n                                                    <div class=\"col-md-4\">\r\n                                <div class=\"services-block-item\">\r\n                                    <a href=\"https:\/\/www.penagrup.com\/en\/products\/extrusion\/co-rotating-twin-screw-assemblies\/\" class=\"stretched-link\"><\/a>\r\n                                    <figure class=\"services-block-item-image service\">\r\n                                        <img decoding=\"async\" src=\"https:\/\/www.penagrup.com\/wp-content\/uploads\/2026\/03\/Sectores-husillo-1-scaled.png\" alt=\"Co-Rotating Twins Assemblies\">\r\n                                    <\/figure>\r\n                                    <div class=\"services-block-item-content\">\r\n                                        <div class=\"services-block-item-info\">\r\n                                            <h3>Co-Rotating Twins Assemblies<\/h3>\r\n                                            <p><\/p>\r\n                                        <\/div>\r\n                                        <a class=\"services-block-item-link\" href=\"https:\/\/www.penagrup.com\/en\/products\/extrusion\/co-rotating-twin-screw-assemblies\/\">MORE INFORMATION                                            <img decoding=\"async\" src=\"https:\/\/www.penagrup.com\/wp-content\/themes\/genesis-child\/assets\/img\/arrow-right.svg\" width=\"16px\" height=\"12px\"\r\n                                                alt=\"arrow-icon\"><\/a>\r\n\r\n                                    <\/div>\r\n                                <\/div>\r\n                            <\/div>\r\n                        \r\n                    \r\n                                                    <div class=\"col-md-4\">\r\n                                <div class=\"services-block-item\">\r\n                                    <a href=\"https:\/\/www.penagrup.com\/en\/products\/extrusion\/conical-twin-screw-assemblies\/\" class=\"stretched-link\"><\/a>\r\n                                    <figure class=\"services-block-item-image service\">\r\n                                        <img decoding=\"async\" src=\"https:\/\/www.penagrup.com\/wp-content\/uploads\/2026\/03\/E.husillo-doble-conico-scaled.jpg\" alt=\"Conical Twins Assemblies\">\r\n                                    <\/figure>\r\n                                    <div class=\"services-block-item-content\">\r\n                                        <div class=\"services-block-item-info\">\r\n                                            <h3>Conical Twins Assemblies<\/h3>\r\n                                            <p><\/p>\r\n                                        <\/div>\r\n                                        <a class=\"services-block-item-link\" href=\"https:\/\/www.penagrup.com\/en\/products\/extrusion\/conical-twin-screw-assemblies\/\">MORE INFORMATION                                            <img decoding=\"async\" src=\"https:\/\/www.penagrup.com\/wp-content\/themes\/genesis-child\/assets\/img\/arrow-right.svg\" width=\"16px\" height=\"12px\"\r\n                                                alt=\"arrow-icon\"><\/a>\r\n\r\n                                    <\/div>\r\n                                <\/div>\r\n                            <\/div>\r\n                        \r\n                    \r\n                                                    <div class=\"col-md-4\">\r\n                                <div class=\"services-block-item\">\r\n                                    <a href=\"https:\/\/www.penagrup.com\/en\/products\/injection-moulding\/injection-screws\/\" class=\"stretched-link\"><\/a>\r\n                                    <figure class=\"services-block-item-image service\">\r\n                                        <img decoding=\"async\" src=\"https:\/\/www.penagrup.com\/wp-content\/uploads\/2026\/03\/I.Husillo-5-scaled.jpg\" alt=\"Injection Screws\">\r\n                                    <\/figure>\r\n                                    <div class=\"services-block-item-content\">\r\n                                        <div class=\"services-block-item-info\">\r\n                                            <h3>Injection Screws<\/h3>\r\n                                            <p><\/p>\r\n                                        <\/div>\r\n                                        <a class=\"services-block-item-link\" href=\"https:\/\/www.penagrup.com\/en\/products\/injection-moulding\/injection-screws\/\">MORE INFORMATION                                            <img decoding=\"async\" src=\"https:\/\/www.penagrup.com\/wp-content\/themes\/genesis-child\/assets\/img\/arrow-right.svg\" width=\"16px\" height=\"12px\"\r\n                                                alt=\"arrow-icon\"><\/a>\r\n\r\n                                    <\/div>\r\n                                <\/div>\r\n                            <\/div>\r\n                        \r\n                    \r\n                                                    <div class=\"col-md-4\">\r\n                                <div class=\"services-block-item\">\r\n                                    <a href=\"https:\/\/www.penagrup.com\/en\/products\/injection-moulding\/injection-barrels\/\" class=\"stretched-link\"><\/a>\r\n                                    <figure class=\"services-block-item-image service\">\r\n                                        <img decoding=\"async\" src=\"https:\/\/www.penagrup.com\/wp-content\/uploads\/2026\/03\/I.camara-entrada-7-scaled.jpg\" alt=\"Injection Barrels\">\r\n                                    <\/figure>\r\n                                    <div class=\"services-block-item-content\">\r\n                                        <div class=\"services-block-item-info\">\r\n                                            <h3>Injection Barrels<\/h3>\r\n                                            <p><\/p>\r\n                                        <\/div>\r\n                                        <a class=\"services-block-item-link\" href=\"https:\/\/www.penagrup.com\/en\/products\/injection-moulding\/injection-barrels\/\">MORE INFORMATION                                            <img decoding=\"async\" src=\"https:\/\/www.penagrup.com\/wp-content\/themes\/genesis-child\/assets\/img\/arrow-right.svg\" width=\"16px\" height=\"12px\"\r\n                                                alt=\"arrow-icon\"><\/a>\r\n\r\n                                    <\/div>\r\n                                <\/div>\r\n                            <\/div>\r\n                        \r\n                                    <\/div>\r\n                    <\/div>\r\n    <\/div>\r\n    \n \r\n\t\t\t\r\n\t\t<\/div>\r\n\t\n \r\n\t\t<\/div>\r\n\t\n \r\n\t\t<\/div>\r\n\t\n\r\n\t\t\t \r\n\t\t<\/div>\r\n\t<\/div><\/section>\n\n\n\n<section class=\"wp-block-group card-media-object\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><\/div><\/section>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":4669,"parent":1387,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":"","_links_to":"","_links_to_target":""},"class_list":["post-4668","page","type-page","status-publish","has-post-thumbnail","entry"],"acf":[],"featured_image_src":"https:\/\/www.penagrup.com\/wp-content\/uploads\/2026\/03\/DSC5447-1-600x400.jpg","featured_image_src_square":"https:\/\/www.penagrup.com\/wp-content\/uploads\/2026\/03\/DSC5447-1-600x600.jpg","_links":{"self":[{"href":"https:\/\/www.penagrup.com\/en\/wp-json\/wp\/v2\/pages\/4668","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.penagrup.com\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.penagrup.com\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.penagrup.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.penagrup.com\/en\/wp-json\/wp\/v2\/comments?post=4668"}],"version-history":[{"count":4,"href":"https:\/\/www.penagrup.com\/en\/wp-json\/wp\/v2\/pages\/4668\/revisions"}],"predecessor-version":[{"id":5244,"href":"https:\/\/www.penagrup.com\/en\/wp-json\/wp\/v2\/pages\/4668\/revisions\/5244"}],"up":[{"embeddable":true,"href":"https:\/\/www.penagrup.com\/en\/wp-json\/wp\/v2\/pages\/1387"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.penagrup.com\/en\/wp-json\/wp\/v2\/media\/4669"}],"wp:attachment":[{"href":"https:\/\/www.penagrup.com\/en\/wp-json\/wp\/v2\/media?parent=4668"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}