{"id":13038,"date":"2026-04-28T12:04:13","date_gmt":"2026-04-28T12:04:13","guid":{"rendered":"https:\/\/composite-tech.com\/?p=13038"},"modified":"2026-04-28T12:33:40","modified_gmt":"2026-04-28T12:33:40","slug":"cnc-bent-gfrp-elements-production-line-manual","status":"publish","type":"post","link":"https:\/\/composite-tech.com\/ru\/2026\/04\/28\/cnc-bent-gfrp-elements-production-line-manual\/","title":{"rendered":"\u0422\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u044f \u0427\u041f\u0423-\u0433\u0438\u0431\u043a\u0438: \u0417\u0430\u0432\u043e\u0435\u0432\u0430\u043d\u0438\u0435 \u044d\u043a\u0441\u043a\u043b\u044e\u0437\u0438\u0432\u043d\u043e\u0439 \u043d\u0438\u0448\u0438 \u0433\u043d\u0443\u0442\u044b\u0445 \u043a\u043e\u043c\u043f\u043e\u0437\u0438\u0442\u043d\u044b\u0445 \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u043e\u0432 \u0434\u043b\u044f \u0443\u0432\u0435\u043b\u0438\u0447\u0435\u043d\u0438\u044f \u0440\u0435\u043d\u0442\u0430\u0431\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0441\u0442\u0432\u0430 \u043d\u0430 401 \u0442\u044b\u0441. \u0442\u043e\u043d\u043d."},"content":{"rendered":"<p><strong>\u0411\u044b\u0441\u0442\u0440\u044b\u0439 \u043e\u0442\u0432\u0435\u0442<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Unique Solution: The CNC BENT line by Composite-Tech is the world&#8217;s only fully automated solution for the production of bent GFRP elements (stirrups, L-bars, U-bars, spirals) using Numerical Control (CNC). \u00a0\u00a0\u00a0<\/li>\n\n\n\n<li>Regulatory Requirement: Global building codes, such as ACI 440.11-22, strictly prohibit the cold bending of GFRP rebar on construction sites; all bent elements must be factory-prefabricated before full resin polymerization.<\/li>\n\n\n\n<li>CNC Capabilities: Controlled by the DDCS V3.1 module using standard G-codes, allowing for any geometry inscribed in a circle with a diameter of up to 1.2 meters. \u00a0\u00a0\u00a0<\/li>\n\n\n\n<li>Operating Range: The system processes diameters from 4 mm to 20 mm. \u00a0\u00a0\u00a0<\/li>\n\n\n\n<li>High Efficiency: Power consumption is restricted to 15 kW, and full automation reduces the required staff to just one operator. \u00a0\u00a0\u00a0<\/li>\n\n\n\n<li>Business Potential: Bent elements command prices 2\u20133 times higher than straight rebar per unit of length, offering the fastest ROI in the composite industry. \u00a0\u00a0\u00a0<\/li>\n<\/ul>\n\n\n\n<p>For owners of composite material factories, 2026 is the year of the &#8220;certification race.&#8221; While the market is becoming saturated with straight rebar manufacturers, the demand for bent elements\u2014essential for reinforcing corners, foundations, columns, and bridge beams\u2014remains 70% unmet. Engineering firms no longer accept hand-bent bars, requiring precision and verified strength at the bend according to <a href=\"https:\/\/composite-tech.com\/ru\/2025\/11\/17\/understanding-aci-440-11-22-for-gfrp-rebar-manufacturers\/\">ASTM D7957<\/a>. Owning CNC BENT technology from Composite-Tech grants a technological monopoly: you become the sole supplier of a complete reinforcement package (rebar + bends), allowing you to secure 100% of large-scale infrastructure tenders.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">The Science of Bending: Why the BENT Line is Indispensable<\/h2>\n\n\n\n<p>Fiberglass rebar is a thermoset composite. Unlike <a href=\"https:\/\/composite-tech.com\/ru\/2022\/09\/02\/frp-rebar-vs-steel-rebar\/\">\u0441\u0442\u0430\u043b\u044c<\/a>, which can be bent at any time, the polymer matrix (vinyl ester or epoxy resin) becomes rigid and brittle once cured.<\/p>\n\n\n\n<p><strong>The Problem with &#8220;Cold Bending&#8221;<\/strong><\/p>\n\n\n\n<p>Attempting to bend finished composite rebar on-site leads to the destruction of fiber-matrix bonds and micro-cracking. This reduces the element&#8217;s strength by up to 80\u201390%, making it structurally dangerous. Consequently, <a href=\"https:\/\/composite-tech.com\/ru\/2025\/09\/15\/aci-440-11-22-explained-how-to-design-concrete-with-gfrp-rebar-in-the-us\/\">\u0410\u0421\u0418 440.11-22<\/a> mandates that bent shapes must be formed &#8220;wet&#8221; during the manufacturing process.<\/p>\n\n\n\n<p><strong>The Composite-Tech Solution: CNC Wet-Forming<\/strong><\/p>\n\n\n\n<p>The BENT line executes the forming process before polymerization begins:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>3-Stage Impregnation: Rovings pass through a vacuum-pressure chamber to achieve perfect resin-to-fiber adhesion. \u00a0\u00a0\u00a0<\/li>\n\n\n\n<li>CNC Winding: The DDCS V3.1 controller directs the &#8220;wet&#8221; bar onto specialized tooling, setting a precise bend radius (per ASTM standards\u2014no less than 3\u20134 times the bar diameter).<\/li>\n\n\n\n<li>Thermal Stabilization: The formed product enters a polymerization oven where the structure is &#8220;locked&#8221; permanently without strength loss. \u00a0\u00a0\u00a0<\/li>\n<\/ol>\n\n\n\n<p>Why this matters for manufacturers: G-code compatibility allows your clients to switch from an L-bar to a complex pile spiral in under 5 minutes simply by uploading a new file via USB. &nbsp;&nbsp;&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Comparison Table: CNC BENT vs. Traditional Methods<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u041f\u0430\u0440\u0430\u043c\u0435\u0442\u0440<\/th><th>BENT Line (Composite-Tech)<\/th><th>Manual\/Hand-Forming<\/th><th>Significance for ASTM\/ACI<\/th><\/tr><\/thead><tbody><tr><td>Angle Precision<\/td><td>(CNC Control)&nbsp;<\/td><td>(Human Error)<\/td><td>Critical for cage fitting and lap splicing.<\/td><\/tr><tr><td>Bend Radius<\/td><td>Programmable, from 4x \u00d8&nbsp;<\/td><td>Unstable<\/td><td>ASTM D7957 requires min 3x-4x \u00d8.<\/td><\/tr><tr><td>Shape Complexity<\/td><td>Spirals, U, L, Z-shapes, Rings<\/td><td>Simple Angles Only<\/td><td>Ability to take high-value bridge\/MRI orders.<\/td><\/tr><tr><td>Bend Strength<\/td><td>(Guaranteed)&nbsp;<\/td><td>Unpredictable (Delamination risk)<\/td><td>Mandatory per ACI 440.11-22.<\/td><\/tr><tr><td>Labor Cost<\/td><td>1 Operator for entire shift<\/td><td>High (skilled artisans needed)<\/td><td>Reduces unit production cost by 3x.&nbsp;<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Profitability Calculator: Straight Rebar vs. Bent Elements<\/h2>\n\n\n\n<p>Investing in a BENT line is the fastest path to high margins. Let&#8217;s calculate the difference in profitability (based on <a href=\"https:\/\/composite-tech.com\/ru\/2025\/09\/22\/3-fiberglass-rebar-real-us-pricing-weight-and-use-cases\/\">#3<\/a> \/ 10mm bar).<\/p>\n\n\n\n<p><strong>Input Data:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Production Cost (Raw materials + energy + labor): ~$0.23 \u2013 $0.27 per meter.<\/li>\n<\/ul>\n\n\n\n<p><strong>Margin Analysis:<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Straight Rebar (Commodity Market):\n<ul class=\"wp-block-list\">\n<li>Selling Price: $0.45 \u2013 $0.55\/m.<\/li>\n\n\n\n<li>Net Profit: ~$0.20 \u2013 $0.28\/m.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Bent Elements (Niche Market):\n<ul class=\"wp-block-list\">\n<li>Selling Price: $1.20 \u2013 $1.80\/m (calculated by total product length).<\/li>\n\n\n\n<li>Net Profit: ~$0.90 \u2013 $1.50\/m. \u00a0\u00a0\u00a0<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p><strong>\u0420\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442: <\/strong>Profit per meter on a BENT line is 4\u20135 times higher than on a standard CT6 line. Even with lower linear output, the financial yield of a BENT line often exceeds that of the primary rebar production.<\/p>\n\n\n\n<p>Why this matters for engineers: Designers prefer working with a single factory that supplies the entire reinforcement kit. A BENT line makes you the priority partner for tier-1 developers.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Practical Checklist: Integrating a BENT Line into Your Factory<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Space Allocation: The BENT line is compact (approx. 13m long) and requires only 20\u201330 m\u00b2 of additional floor space. \u00a0\u00a0\u00a0<\/li>\n\n\n\n<li>Power Requirements: Requires 380V, 15 kW connection. The machine is highly energy-efficient compared to steel heating presses. \u00a0\u00a0\u00a0<\/li>\n\n\n\n<li>Tooling (Forms): We recommend a set of templates for each product type. The line supports shapes fitting a 1.2m circle. \u00a0\u00a0\u00a0<\/li>\n\n\n\n<li>Software Training: G-code programming training takes 2 days. We provide a library of scripts for standard stirrups. \u00a0\u00a0\u00a0<\/li>\n\n\n\n<li>Quality Control: Conduct bend strength tests (ASTM D7957) once per shift to ensure process stability.<\/li>\n\n\n\n<li>Resin Selection: Use resins with extended pot life to maintain flexibility during the winding stage.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">FAQ: Questions from Equipment Buyers<\/h2>\n\n\n<div id=\"rank-math-faq\" class=\"rank-math-block\">\n<div class=\"rank-math-list\">\n<div id=\"faq-question-1777377048227\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">Can I bend rebar produced on other machines?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>No. The BENT machine is a standalone line. Rebar must be formed immediately after impregnation and before entering the oven. \u00a0\u00a0\u00a0<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1777377068886\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">What is the maximum diameter the machine can bend? <\/h3>\n<div class=\"rank-math-answer\">\n\n<p>The standard version handles up to 20 mm. This covers 95% of all structural reinforcement needs. \u00a0<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1777377102960\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">Is it difficult to change shapes on the machine?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>Tooling change takes 15\u201320 minutes. Loading a new CNC program is instantaneous via the menu. \u00a0<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1777377132026\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">Can the machine make spirals for foundation piles?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>Yes, this is a standard feature of the CNC module. GFRP spirals are essential for aggressive soil conditions. \u00a0\u00a0\u00a0<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1777377206854\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">What is the repeatability accuracy?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>Thanks to Delta\/Samkoon CNC drives, the tolerance is less than 1 mm per meter of the product. \u00a0\u00a0\u00a0<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1777377233269\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">Does it include its own oven?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>Yes, the BENT line is equipped with a polymerization chamber where items are cured in a static position on the forms.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1777377256685\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">Do I need a programmer as an operator?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>No. The interface is intuitive. An average worker masters the control panel in 3\u20135 shifts. \u00a0\u00a0\u00a0<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1777377288382\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">How fast is the payback?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>With active orders for foundation stirrups, break-even is typically reached in 4\u20136 months. \u00a0\u00a0\u00a0<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1777377313117\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">Can I use Basalt fiber (BFRP)?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>Yes, the line is universal for <a href=\"https:\/\/composite-tech.com\/ru\/2026\/03\/23\/basalt-rebar-vs-gfrp-rebar-bfrp-vs-fiberglass\/\">GFRP, BFRP<\/a>, and CFRP.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1777377334364\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">Is air or water cooling used?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>We use controlled air cooling to prevent thermal shock, as per our patented technology.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1777377361693\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">How are products marked?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>An automatic marking unit can be integrated to print manufacturer IDs and diameters on each piece.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1777377380160\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">What is the warranty?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>We provide a 1-year hardware warranty and lifetime software support. \u00a0\u00a0\u00a0<\/p>\n\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\">\u0417\u0430\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0435<\/h2>\n\n\n\n<p>Bent element production is the &#8220;Major League&#8221; of the composite industry. The ACI 440.11-22 standard has closed the door on those attempting to mimic quality with manual methods. The <a href=\"https:\/\/composite-tech.com\/ru\/production-line-for-bent-fibreglass-or-basalt-fibre-frame-elements\/\">CNC BENT line from Composite-Tech<\/a> is your only way to legally and efficiently produce stirrups and corner bars for the US and European markets.<\/p>\n\n\n\n<p>Don&#8217;t just be &#8220;another&#8221; straight rebar producer. Become a leader offering comprehensive, certified engineering solutions.<\/p>\n\n\n\n<p>Would you like to see a video demonstration of the CNC BENT line and G-code examples? Request a technical consultation with our lead engineer and a profitability calculation for your product range.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong><a href=\"https:\/\/composite-tech.com\/ru\/contacts\/\">Contact us today!<\/a><\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>\u041b\u0438\u043d\u0438\u044f CNC BENT \u043e\u0442 Composite-Tech \u2014 \u044d\u0442\u043e \u0435\u0434\u0438\u043d\u0441\u0442\u0432\u0435\u043d\u043d\u043e\u0435 \u0432 \u043c\u0438\u0440\u0435 \u043f\u043e\u043b\u043d\u043e\u0441\u0442\u044c\u044e \u0430\u0432\u0442\u043e\u043c\u0430\u0442\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0435 \u0440\u0435\u0448\u0435\u043d\u0438\u0435 \u0434\u043b\u044f \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0441\u0442\u0432\u0430 \u0433\u043d\u0443\u0442\u044b\u0445 \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u043e\u0432 \u0438\u0437 \u0441\u0442\u0435\u043a\u043b\u043e\u0432\u043e\u043b\u043e\u043a\u043d\u0438\u0441\u0442\u043e\u0433\u043e \u043f\u043e\u043b\u0438\u043c\u0435\u0440\u0430 \u0441 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435\u043c \u0447\u0438\u0441\u043b\u043e\u0432\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f (\u0427\u041f\u0423). \u00a0\u00a0\u00a0<\/p>","protected":false},"author":1,"featured_media":13039,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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