{"id":3539,"date":"2016-06-14T11:58:25","date_gmt":"2016-06-14T03:58:25","guid":{"rendered":"http:\/\/hanchang.designworks.tw\/?post_type=portfolio&#038;p=3539"},"modified":"2026-09-12T20:31:19","modified_gmt":"2026-09-12T12:31:19","slug":"automatic-straighten-press-compression-molding-machine","status":"publish","type":"portfolio","link":"https:\/\/hanchang.com.tw\/en\/portfolio-item\/automatic-straighten-press-compression-molding-machine\/","title":{"rendered":"Automatic Straightening Hydraulic Press"},"content":{"rendered":"<section  class='av_textblock_section av-32cc9v-2f90b1647794e33cbfbe22c410a7e1a6 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock hc-product-layout-block'  itemprop=\"text\" ><style>#top.postid-3539 #main main.content {width:100%;border:0;padding-right:0;float:none;}\n#top.postid-3539 .hc-product-layout 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Press corrects bending in steel and aluminum parts, long shafts, profiles and heat-treated workpieces. Supports carry the part while a pressing head applies localized hydraulic force; straightness is checked after unloading to assess the correction.\"}}, {\"@type\": \"Question\", \"name\": \"What matters when selecting a shaft straightening press?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Start with shaft length, cross-section, material, hardness and the bend to be corrected. Support points and pressing-head position define the loaded section, while required force, ram stroke and target straightness guide the equipment arrangement.\"}}, {\"@type\": \"Question\", \"name\": \"Why check straightness after releasing the load?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Metal workpieces spring back when pressing force is removed. Unloaded straightness shows the correction that remains. Comparing that result with the force position and ram travel provides a useful basis for the next adjustment.\"}}, {\"@type\": \"Question\", \"name\": \"How are straightening conditions selected for steel and aluminum profiles?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Use the material, hardness, heat-treatment condition, cross-section and initial bend to select force and ram travel. Match the support and pressing contact surfaces to the profile, then use unloaded straightness and springback observations to guide further adjustment.\"}}, {\"@type\": \"Question\", \"name\": \"What determines hydraulic straightening press price?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The quotation depends on the part length and cross-section, required force, supports, pressing head, stroke and working space. Send Han Chang a part photo or drawing and the correction required to begin a configuration and price discussion; an existing straightness requirement helps refine the selection.\"}}]}<\/script><\/p>\n<div class=\"hc-product-layout\">\n<section class=\"hc-hero\">\n<div class=\"hc-hero-copy\"><span class=\"hc-eyebrow\">HAN CHANG \u00b7 Automatic Straightening Hydraulic Press<\/span><\/p>\n<h1>Automatic Straightening Hydraulic Press<\/h1>\n<div class=\"hc-product-lead\">\n<p>Han Chang&#8217;s Automatic Straightening Hydraulic Press corrects bending in steel and aluminum workpieces, long shafts, profiles and parts distorted after heat treatment. Supports carry the workpiece while the pressing head applies localized hydraulic force to the area that needs correction.<\/p>\n<\/div>\n<div class=\"hc-actions\"><a class=\"hc-btn\" href=\"https:\/\/hanchang.com.tw\/en\/contact-us\/\">Request a quotation<\/a><a class=\"hc-btn hc-btn-secondary\" href=\"#hcproduct-specs\">Machine and selection information<\/a><\/div>\n<\/div>\n<div class=\"hc-product-static-machine-image\">\n<figure class=\"hc-product-machine-figure\"><img decoding=\"async\" width=\"450\" height=\"450\" class=\"wp-image-4723\" data-attachment-id=\"4723\" src=\"https:\/\/hanchang.com.tw\/wp-content\/uploads\/2026\/03\/automatic-vacuum-hydraulic-press.jpg\" alt=\"Automatic Straightening Hydraulic Press\" loading=\"eager\" fetchpriority=\"high\" srcset=\"https:\/\/hanchang.com.tw\/wp-content\/uploads\/2026\/03\/automatic-vacuum-hydraulic-press.jpg 450w, https:\/\/hanchang.com.tw\/wp-content\/uploads\/2026\/03\/automatic-vacuum-hydraulic-press-200x200.jpg 200w, https:\/\/hanchang.com.tw\/wp-content\/uploads\/2026\/03\/automatic-vacuum-hydraulic-press-80x80.jpg 80w, https:\/\/hanchang.com.tw\/wp-content\/uploads\/2026\/03\/automatic-vacuum-hydraulic-press-36x36.jpg 36w, https:\/\/hanchang.com.tw\/wp-content\/uploads\/2026\/03\/automatic-vacuum-hydraulic-press-180x180.jpg 180w\" sizes=\"(max-width: 450px) 100vw, 450px\" \/><figcaption>Automatic Straightening Hydraulic Press<\/figcaption><\/figure>\n<\/div>\n<\/section>\n<div class=\"hc-stat-band\">\n<div class=\"hc-stat\"><strong>Materials<\/strong><span>Steel, aluminum and metal workpieces suitable for hydraulic straightening.<\/span><\/div>\n<div class=\"hc-stat\"><strong>Applications<\/strong><span>Long shafts, profiles, elongated parts and heat-treatment distortion correction.<\/span><\/div>\n<div class=\"hc-stat\"><strong>Working sequence<\/strong><span>Support and position, apply localized force, unload and check straightness.<\/span><\/div>\n<div class=\"hc-stat\"><strong>Selection priorities<\/strong><span>Part cross-section, support points, pressing position, ram stroke and springback.<\/span><\/div>\n<\/div>\n<nav aria-label=\"On this product page\" class=\"hc-page-nav\"><a href=\"#hcproduct-benefits\">Machine advantages<\/a><a href=\"#hcproduct-process\">Support, pressing and straightness checks<\/a><a href=\"#hcproduct-fit\">Workpiece materials and applications<\/a><a href=\"#hcproduct-specs\">Machine and selection information<\/a><a href=\"#hcproduct-faq\">Buyer questions<\/a><a href=\"#hcproduct-rfq\">Request a quotation<\/a><\/nav>\n<section class=\"hc-section hc-product-machine-functions-block\" id=\"hcproduct-benefits\">\n<div class=\"hc-section-heading\">\n<h2>Machine advantages<\/h2>\n<\/div>\n<p>Effective straightening brings support positions, ram travel and springback together. Straightness checks after unloading show the result and guide further correction, supporting consistent quality and better working efficiency. For manufacturers choosing a shaft straightening press or a press for long metal profiles, Han Chang focuses the equipment arrangement on the actual part.<\/p>\n<div class=\"hc-benefits\">\n<article class=\"hc-benefit\"><span class=\"hc-benefit-index\">01<\/span><\/p>\n<div>\n<h3>Put hydraulic force where correction is needed<\/h3>\n<p>The pressing head acts on the bent area rather than treating the entire workpiece alike. Defined force positions and ram travel make the correction process easier to manage than repeated hammer correction, helping improve working efficiency.<\/p>\n<\/div>\n<\/article>\n<article class=\"hc-benefit\"><span class=\"hc-benefit-index\">02<\/span><\/p>\n<div>\n<h3>Match the supports to the shaft or profile<\/h3>\n<p>Workpiece length, cross-section and bend location guide the support and pressing-head arrangement. Coordinating the supported span with the point of force gives long shafts and profiles a practical foundation for consistent straightening.<\/p>\n<\/div>\n<\/article>\n<article class=\"hc-benefit\"><span class=\"hc-benefit-index\">03<\/span><\/p>\n<div>\n<h3>Use springback checks to improve consistency<\/h3>\n<p>A metal part changes shape as the load is released. Comparing unloaded straightness with the force position and ram travel helps guide the next correction and reduce over-pressing or under-correction.<\/p>\n<\/div>\n<\/article>\n<\/div>\n<\/section>\n<section class=\"hc-section\" id=\"hcproduct-process\">\n<div class=\"hc-section-heading\">\n<h2>Support, pressing and straightness checks<\/h2>\n<\/div>\n<div class=\"hc-workflow-grid\">\n<article class=\"hc-workflow-card\">\n<h3>Locate the bend and support the part<\/h3>\n<p>Check the bend position and direction. Arrange support points around the part length and cross-section, with the pressing head aligned to the area requiring correction.<\/p>\n<\/article>\n<article class=\"hc-workflow-card\">\n<h3>Apply localized hydraulic force<\/h3>\n<p>Press the bent section using force and ram travel suited to the material and deformation. Where correction is needed along the length, arrange pressing at the relevant sections.<\/p>\n<\/article>\n<article class=\"hc-workflow-card\">\n<h3>Unload and check straightness<\/h3>\n<p>Check springback and straightness after releasing the load. Use the result to guide subsequent pressing positions and ram travel for further correction where needed.<\/p>\n<\/article>\n<\/div>\n<\/section>\n<section class=\"hc-section hc-product-selection-guide-block\" id=\"hcproduct-fit\">\n<div class=\"hc-section-heading\">\n<h2>Workpiece materials and applications<\/h2>\n<\/div>\n<h3>Applicable materials<\/h3>\n<div class=\"hc-selection-grid\">\n<div class=\"hc-selection-panel\">\n<h3>Steel shafts and elongated steel parts<\/h3>\n<p>Hydraulic straightening addresses bending in steel components, including distortion after heat treatment. Hardness, heat-treatment condition and cross-section affect the force requirement and springback, making them useful inputs for press selection.<\/p>\n<\/div>\n<div class=\"hc-selection-panel\">\n<h3>Aluminum parts and metal profiles<\/h3>\n<p>Suitable aluminum workpieces and profiles can be corrected through localized pressing. Support surfaces and pressing-head contact positions follow the part contour, bringing force application and surface contact into the same setup decision.<\/p>\n<\/div>\n<\/div>\n<p>Parts of the same length can need different straightening conditions because their material, hardness and cross-section differ. Match supports, pressing contact and ram travel to the actual part, then compare results using a consistent straightness measurement reference.<\/p>\n<h3>Metal straightening applications<\/h3>\n<div class=\"hc-selection-grid\">\n<div class=\"hc-selection-panel\">\n<h3>Shaft straightening | Prepare parts for machining and assembly<\/h3>\n<p>Apply force to the bent area of a shaft with suitable work support. Straightness checks connect the correction stage to the geometric requirements of subsequent machining and assembly.<\/p>\n<\/div>\n<div class=\"hc-selection-panel\">\n<h3>Long metal profiles | Correct localized bends<\/h3>\n<p>Steel and aluminum profiles call for support positions suited to their cross-section and bend direction. Local pressing addresses the sections requiring correction, making part geometry and usable working space central to equipment selection.<\/p>\n<\/div>\n<div class=\"hc-selection-panel\">\n<h3>Post-heat-treatment parts | Correct distortion before further processing<\/h3>\n<p>A straightening stage can address bending that remains after heat treatment. Material hardness, initial deformation and springback guide the pressing conditions, with unloaded straightness providing the basis for judging the result.<\/p>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"hc-section hc-product-model-overview-block\" id=\"hcproduct-specs\">\n<div class=\"hc-section-heading\">\n<h2>Machine and selection information<\/h2>\n<\/div>\n<p>When comparing hydraulic straightening press suppliers, look beyond pressing force. The support arrangement, usable working space and straightness inspection method should all fit the parts you intend to process.<\/p>\n<div class=\"hc-custom-spec-table\">\n<table>\n<thead>\n<tr>\n<th scope=\"col\">Selection item<\/th>\n<th scope=\"col\">Selection considerations<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<th scope=\"row\">Workpiece<\/th>\n<td>Steel or aluminum, hardness, heat-treatment condition, length, cross-section and weight.<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Correction requirement<\/th>\n<td>Bend location and direction, initial deformation and target straightness.<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Supports and pressing head<\/th>\n<td>Support points, contact surfaces, pressing location and handling clearance.<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Force and travel<\/th>\n<td>Required straightening force, ram stroke, daylight and springback after unloading.<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Inspection<\/th>\n<td>Measurement reference, straightness checking method and acceptance requirement.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div class=\"hc-purchase-note\">\n<p>Start with a part photo or drawing, its material and approximate length, and where it bends. If you already have a straightness requirement or inspection record, include it so Han Chang can discuss a press arrangement and quotation around your workpiece.<\/p>\n<\/div>\n<\/section>\n<section class=\"hc-section hc-product-service-block\">\n<section class=\"hc-product-section hc-service-section\">\n<div class=\"hc-section-heading\">\n<h2>Workpiece support and press configuration<\/h2>\n<\/div>\n<div class=\"hc-card-grid\">\n<div class=\"hc-product-card\"><strong>Plan for the parts you regularly handle<\/strong><\/p>\n<p>A change in part length, section or material can alter support and pressing-contact requirements. Considering the regular part mix alongside support access and handling clearance helps make the working area useful in daily production.<\/p>\n<\/div>\n<div class=\"hc-product-card\"><strong>Compare correction results on the same basis<\/strong><\/p>\n<p>Record the pressing location, applied force, ram travel and unloaded straightness together. A consistent measurement reference makes these records useful for adjusting the process and comparing results across parts.<\/p>\n<\/div>\n<\/div>\n<\/section>\n<\/section>\n<section class=\"hc-section hc-product-faq-block\" id=\"hcproduct-faq\">\n<section class=\"hc-product-section hc-faq-section hc-product-faq\">\n<div class=\"hc-section-heading\">\n<h2>Buyer questions<\/h2>\n<\/div>\n<details>\n<summary>What does Han Chang&#8217;s hydraulic straightening press do?<\/summary>\n<p>Han Chang&#8217;s Automatic Straightening Hydraulic Press corrects bending in steel and aluminum parts, long shafts, profiles and heat-treated workpieces. Supports carry the part while a pressing head applies localized hydraulic force; straightness is checked after unloading to assess the correction.<\/p>\n<\/details>\n<details>\n<summary>What matters when selecting a shaft straightening press?<\/summary>\n<p>Start with shaft length, cross-section, material, hardness and the bend to be corrected. Support points and pressing-head position define the loaded section, while required force, ram stroke and target straightness guide the equipment arrangement.<\/p>\n<\/details>\n<details>\n<summary>Why check straightness after releasing the load?<\/summary>\n<p>Metal workpieces spring back when pressing force is removed. Unloaded straightness shows the correction that remains. Comparing that result with the force position and ram travel provides a useful basis for the next adjustment.<\/p>\n<\/details>\n<details>\n<summary>How are straightening conditions selected for steel and aluminum profiles?<\/summary>\n<p>Use the material, hardness, heat-treatment condition, cross-section and initial bend to select force and ram travel. Match the support and pressing contact surfaces to the profile, then use unloaded straightness and springback observations to guide further adjustment.<\/p>\n<\/details>\n<details>\n<summary>What determines hydraulic straightening press price?<\/summary>\n<p>The quotation depends on the part length and cross-section, required force, supports, pressing head, stroke and working space. Send Han Chang a part photo or drawing and the correction required to begin a configuration and price discussion; an existing straightness requirement helps refine the selection.<\/p>\n<\/details>\n<\/section>\n<\/section>\n<section class=\"hc-section\" id=\"hcproduct-related-equipment\">\n<div class=\"hc-section-heading\">\n<h2>Related machines and selection<\/h2>\n<\/div>\n<div class=\"hc-related-equipment-grid\">\n<article class=\"hc-related-equipment-card hc-link-card\">\n<div class=\"hc-link-copy\"><span class=\"hc-link-kicker\">RELATED EQUIPMENT<\/span><\/p>\n<h3 id=\"hc-related-3539-0-title\">Hydraulic Deep Drawing Press<\/h3>\n<p>For forming stainless steel or steel sheet into pots and basins, explore the Hydraulic Deep Drawing Press.<\/p>\n<\/div>\n<p class=\"hc-link-action-wrap\"><a class=\"hc-link-action\" href=\"https:\/\/hanchang.com.tw\/en\/portfolio-item\/automatic-hydraulic-deepdrawing-press-compression-molding-machine\/\" aria-labelledby=\"hc-related-3539-0-title hc-related-3539-0-action\"><span id=\"hc-related-3539-0-action\">View machine<\/span> <span aria-hidden=\"true\">\u2192<\/span><\/a><\/p>\n<\/article>\n<article class=\"hc-related-equipment-card hc-link-card\">\n<div class=\"hc-link-copy\"><span class=\"hc-link-kicker\">MACHINE SELECTION<\/span><\/p>\n<h3 id=\"hc-related-3539-1-title\">Custom forming machine range<\/h3>\n<p>Explore large hot presses and other forming equipment by material, product and production process.<\/p>\n<\/div>\n<p class=\"hc-link-action-wrap\"><a class=\"hc-link-action\" href=\"https:\/\/hanchang.com.tw\/en\/portfolio_entries\/customized-forming-machine\/\" aria-labelledby=\"hc-related-3539-1-title hc-related-3539-1-action\"><span id=\"hc-related-3539-1-action\">Explore series<\/span> <span aria-hidden=\"true\">\u2192<\/span><\/a><\/p>\n<\/article>\n<\/div>\n<style id=\"hc-related-clickable-v1\">#top.postid-3539 #hcproduct-related-equipment .hc-related-equipment-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;align-items:stretch;width:100%;}\n#top.postid-3539 #hcproduct-related-equipment article.hc-link-card{display:flex;flex-direction:column;justify-content:space-between;gap:25px;position:relative;min-width:0;box-sizing:border-box;background:#eff6f4;border:1px solid #aac3be;border-top:4px solid #27675f;border-radius:8px;padding:26px;text-decoration:none;color:#203f45;cursor:pointer;transition:background .15s,border-color .15s,box-shadow .15s;}\n#top.postid-3539 #hcproduct-related-equipment article.hc-link-card h3{margin:13px 0 14px;font-size:24px;line-height:1.35;letter-spacing:-.3px;color:#203f45;text-transform:none;}\n#top.postid-3539 #hcproduct-related-equipment .hc-link-copy>p:not(.hc-related-label){color:#445d60;font-size:17px;line-height:1.7;letter-spacing:normal;margin:0;}\n#top.postid-3539 #hcproduct-related-equipment .hc-link-kicker,#top.postid-3539 #hcproduct-related-equipment 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article.hc-link-card:focus-within{outline:3px solid #97621a;outline-offset:4px;}\n#top.postid-3539 #hcproduct-related-equipment article.hc-link-card:hover{background:#e4f0ed;border-color:#397c70;box-shadow:0 5px 15px #17483e17;color:#203f45;text-decoration:none;}\n#top.postid-3539 #hcproduct-related-equipment article.hc-link-card:hover .hc-link-action{background:#164b44;color:#fff;}\n#top.postid-3539 #hcproduct-related-equipment article.hc-link-card:focus-visible,#top.postid-3539 #hcproduct-related-equipment .hc-related-series-link:focus-visible{outline:3px solid #97621a;outline-offset:4px;}\n#top.postid-3539 #hcproduct-related-equipment a.hc-related-series-link{display:block;box-sizing:border-box;border:1px solid #aac3be;border-radius:6px;margin-top:22px;padding:18px 22px;color:#205c54;font-size:17px;line-height:1.5;font-weight:700;text-decoration:underline;text-underline-offset:4px;background:#fff;min-height:58px;}\n@media(max-width:650px){#top.postid-3539 #hcproduct-related-equipment .hc-related-equipment-grid{grid-template-columns:minmax(0,1fr);gap:18px;}#top.postid-3539 #hcproduct-related-equipment article.hc-link-card{padding:22px;gap:22px;}#top.postid-3539 #hcproduct-related-equipment article.hc-link-card h3{font-size:22px;}#top.postid-3539 #hcproduct-related-equipment .hc-link-copy>p:not(.hc-related-label){font-size:16px;line-height:1.65;}#top.postid-3539 #hcproduct-related-equipment a.hc-related-series-link{font-size:16px;padding:18px 20px;}}\n@media(prefers-reduced-motion:reduce){#top.postid-3539 #hcproduct-related-equipment article.hc-link-card{transition:none;}}<\/style>\n<\/section>\n<section class=\"hc-product-section hc-rfq-section\" id=\"hcproduct-rfq\">\n<div class=\"hc-section-heading\">\n<h2>Choose a straightening press around your parts<\/h2>\n<\/div>\n<p>Send Han Chang a shaft or profile drawing to discuss bend correction, work support and straightness requirements. Start your hydraulic straightening press selection and request a quote.<\/p>\n<p><a class=\"hc-btn hc-rfq-link\" href=\"https:\/\/hanchang.com.tw\/en\/contact-us\/\">Request a quotation<\/a><\/p>\n<p class=\"hc-direct-contact\"><a style=\"color:#fff;text-decoration:underline\" href=\"mailto:tw.hanchang@gmail.com\">Email<\/a> \u00b7 <a style=\"color:#fff;text-decoration:underline\" href=\"https:\/\/wa.me\/886910738889\">WhatsApp<\/a><\/p>\n<\/section>\n<section class=\"hc-gsc-discovery-links\">\n<div class=\"hc-section-heading\">\n<h2>Reference videos and further reading<\/h2>\n<\/div>\n<ul>\n<li><a href=\"https:\/\/hanchang.com.tw\/en\/portfolio-item\/automatic-cement-concrete-brick-press-compression-molding-machine\/\">Concrete brick making machine<\/a><\/li>\n<li><a href=\"https:\/\/hanchang.com.tw\/en\/portfolio-item\/customized-heavy-duty-hot-compression-molding-machine-2\/\">Large single-cylinder hot compression molding press<\/a><\/li>\n<li><a href=\"https:\/\/hanchang.com.tw\/en\/portfolio-item\/customized-heavy-duty-hot-compression-molding-machine\/\">Large twin-cylinder hot compression molding press<\/a><\/li>\n<li><a href=\"https:\/\/hanchang.com.tw\/en\/portfolio-item\/extended-third-fold-cylinder-hot-compression-molding-machine\/\">Three-cylinder long-platen hot press<\/a><\/li>\n<li><a href=\"https:\/\/hanchang.com.tw\/en\/portfolio-item\/extended-double-cylinder-hot-compression-molding-machine\/\">Double-cylinder long-platen hot press<\/a><\/li>\n<li><a href=\"https:\/\/hanchang.com.tw\/en\/portfolio-item\/compression-molding-machine-for-rubber-products\/\">Rubber Compression Molding Machine<\/a><\/li>\n<li><a href=\"https:\/\/hanchang.com.tw\/en\/portfolio-item\/safety-screen-protected-hot-compression-molding-machine\/\">Guarded hot compression molding press<\/a><\/li>\n<li><a href=\"https:\/\/www.youtube.com\/watch?v=oMd5eldULp4\">Reference video: molding equipment ready to ship<\/a><\/li>\n<li><a href=\"https:\/\/www.youtube.com\/watch?v=6dOK0cr4Vp8\">Reference video: Han Chang factory and equipment introduction<\/a><\/li>\n<li><a href=\"https:\/\/www.youtube.com\/shorts\/wMM_mSJgxFY\">Reference video: molding machine parts<\/a><\/li>\n<\/ul>\n<\/section>\n<\/div>\n<\/div><\/section>\n","protected":false},"excerpt":{"rendered":"<p>Localized hydraulic pressing corrects bending in steel and aluminum workpieces, long shafts, profiles and heat-treated parts. Matched supports, ram travel and unloaded straightness checks support consistent correction and efficient working.<\/p>\n","protected":false},"author":5,"featured_media":4723,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"tags":[],"portfolio_entries":[81],"class_list":["post-3539","portfolio","type-portfolio","status-publish","has-post-thumbnail","hentry","portfolio_entries-customized-forming-machine"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.0 (Yoast SEO v28.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Automatic Straightening Hydraulic Press | Han Chang<\/title>\n<meta name=\"description\" content=\"Han Chang hydraulic straightening press for steel and aluminum shafts, profiles and heat-treated parts. Explore support, stroke and springback. 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