{"id":99977,"date":"2026-04-28T01:57:02","date_gmt":"2026-04-28T01:57:02","guid":{"rendered":"https:\/\/irwindevc.wpenginepowered.com\/?page_id=99977"},"modified":"2026-06-16T06:40:47","modified_gmt":"2026-06-16T06:40:47","slug":"7500-teu-container-cooling","status":"publish","type":"page","link":"https:\/\/www.irwin.com.hk\/en\/case-studies\/7500-teu-container-cooling\/","title":{"rendered":"7,500 TEU \u96c6\u88c5\u7bb1\u8239\u4e2d\u592e\u51b7\u5374\u7ba1\u9879\u76ee"},"content":{"rendered":"<div class=\"et_pb_section_0 et_pb_section et_section_regular et_block_section\">\n<div class=\"et_pb_row_0 et_pb_row et_flex_row\">\n<div class=\"et_pb_column_0 et_pb_column et-last-child et_flex_column et_pb_css_mix_blend_mode_passthrough et_flex_column_24_24 et_flex_column_24_24_tablet et_flex_column_24_24_phone et_flex_column_24_24_ultraWide\">\n<div class=\"et_pb_module et_pb_button_module_wrapper et_pb_button_0_wrapper\"><a class=\"et_pb_button_0 et_pb_button et_pb_bg_layout_dark et_pb_module et_flex_module\" href=\"https:\/\/www.irwin.com.hk\/en\/case-studies\/\" data-icon=\"#\">Return to case list<\/a><\/div>\n<\/div>\n<\/div>\n\n<div class=\"et_pb_row_1 et_pb_row et_flex_row preset--module--divi-row--5138c454-be54-4233-bd3b-f8e6a8747976\">\n<div class=\"et_pb_column_1 et_pb_column et-last-child et_flex_column et_pb_css_mix_blend_mode_passthrough et_flex_column_24_24 et_flex_column_24_24_tablet et_flex_column_24_24_phone et_flex_column_24_24_ultraWide preset--module--divi-column--73121f80-a3ef-4484-8763-c3f18e3c56d2\">\n<div class=\"et_pb_heading_0 et_pb_heading et_pb_module et_flex_module preset--module--divi-heading--ddeb8c09-9078-4424-bc15-2efb6572e28e\"><div class=\"et_pb_heading_container\"><h1 class=\"et_pb_module_header\">7,500 TEU Container Vessel \u2014 Central Cooling Pipe<\/h1><\/div><\/div>\n\n<div class=\"et_pb_blurb_0 et_pb_blurb et_pb_bg_layout_light et_pb_blurb_position_left et_pb_module et_flex_module\"><div class=\"et_pb_blurb_content et_flex_module\"><div class=\"et_pb_main_blurb_image\"><span class=\"et_pb_image_wrap\"><span class=\"et-pb-icon\">\ue08a<\/span><\/span><\/div><div class=\"et_pb_blurb_container\"><div class=\"et_pb_blurb_description\"><p>Client \/<span>A major international container-ship operator<\/span><\/p>\n<\/div><\/div><\/div><\/div>\n\n<div class=\"et_pb_blurb_1 et_pb_blurb et_pb_bg_layout_light et_pb_blurb_position_left et_pb_module et_flex_module\"><div class=\"et_pb_blurb_content et_flex_module\"><div class=\"et_pb_main_blurb_image\"><span class=\"et_pb_image_wrap\"><span class=\"et-pb-icon\">\uf3c5<\/span><\/span><\/div><div class=\"et_pb_blurb_container\"><div class=\"et_pb_blurb_description\"><p>Location \/ Asia-Pacific yard (confidential)<\/p>\n<\/div><\/div><\/div><\/div>\n\n<div class=\"et_pb_blurb_2 et_pb_blurb et_pb_bg_layout_light et_pb_blurb_position_left et_pb_module et_flex_module\"><div class=\"et_pb_blurb_content et_flex_module\"><div class=\"et_pb_main_blurb_image\"><span class=\"et_pb_image_wrap\"><span class=\"et-pb-icon\">\uf073<\/span><\/span><\/div><div class=\"et_pb_blurb_container\"><div class=\"et_pb_blurb_description\"><p>Date \/ 2023\u20132024<\/p>\n<\/div><\/div><\/div><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n<div class=\"et_pb_section_1 et_pb_section et_section_regular et_flex_section\">\n<div class=\"et_pb_row_2 et_pb_row et_flex_row\">\n<div class=\"et_pb_column_2 et_pb_column et-last-child et_flex_column et_pb_css_mix_blend_mode_passthrough et_flex_column_24_24 et_flex_column_24_24_tablet et_flex_column_24_24_phone et_flex_column_24_24_ultraWide\">\n<div class=\"et_pb_code_0 et_pb_code et_pb_module\"><div class=\"et_pb_code_inner\"><div id=\"irwin-project-module\">\n<style>\n    \/* \u6240\u6709\u6837\u5f0f\u4e25\u683c\u9650\u5b9a\u5728 #irwin-project-module \u5185\u90e8\uff0c\u4e0d\u5f71\u54cd\u7f51\u7ad9\u5176\u4ed6\u90e8\u5206 *\/\n    #irwin-project-module {\n        display: block;\n        width: 100%;\n        max-width: 1280px;\n     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0;\n        letter-spacing: -0.5px;\n    }\n    #irwin-project-module .subhead {\n        color: #5B6E8C;\n        border-left: 4px solid #4A90A4;\n        padding-left: 1rem;\n        font-size: 0.95rem;\n        font-weight: 500;\n    }\n    #irwin-project-module p {\n        margin-bottom: 1rem;\n        color: #2C3E4E;\n        font-size: 1rem;\n        line-height: 1.6;\n    }\n    #irwin-project-module .highlight-box {\n        background: #F8FAFC;\n        padding: 1.25rem 1.5rem;\n        border-left: 5px solid #1D7A8A;\n        margin: 1.5rem 0;\n        border-radius: 0.35rem;\n    }\n    #irwin-project-module .grid-3, \n    #irwin-project-module .results-grid {\n        display: grid;\n        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));\n        gap: 1.5rem;\n        margin: 1.5rem 0;\n    }\n    #irwin-project-module .card {\n        border: 1px solid #E2E8F0;\n        border-radius: 0.5rem;\n        padding: 1.3rem;\n        background: white;\n    }\n    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   text-align: center;\n        border: 1px solid #E2E8F0;\n        border-radius: 0.5rem;\n        padding: 1.2rem;\n        background: white;\n    }\n    #irwin-project-module .result-num {\n        font-size: 2.2rem;\n        font-weight: 800;\n        color: #1D7A8A;\n        margin-bottom: 0.3rem;\n    }\n    #irwin-project-module .quote {\n        background: #F1F6F9;\n        padding: 1.2rem 1.8rem;\n        border-left: 5px solid #4A90A4;\n        border-radius: 0.35rem;\n        margin-top: 1rem;\n        font-weight: 500;\n        color: #105E72;\n    }\n    #irwin-project-module hr {\n        margin: 1.8rem 0;\n        border: none;\n        border-top: 1px solid #E2E8F0;\n    }\n    #irwin-project-module .footer-note {\n        font-size: 0.75rem;\n        text-align: center;\n        border-top: 1px solid #E9EDF2;\n        padding-top: 1.2rem;\n        margin-top: 1rem;\n        color: #6F8F9E;\n    }\n    #irwin-project-module .inline-highlight {\n        background: #E2F0F5;\n        padding: 0.1rem 0.3rem;\n        border-radius: 0.2rem;\n        font-weight: 500;\n        color: #0B3B4A;\n    }\n    #irwin-project-module .image-container {\n        margin: 1.8rem 0;\n        text-align: center;\n    }\n    #irwin-project-module .case-image {\n        max-width: 65%;\n        height: auto;\n        border-radius: 0.5rem;\n        border: 1px solid #E2E8F0;\n        background: #F9FCFE;\n        box-shadow: 0 1px 4px rgba(0,0,0,0.03);\n    }\n    #irwin-project-module .image-caption {\n        font-size: 0.8rem;\n        color: #6A7D8E;\n        margin-top: 0.6rem;\n        text-align: center;\n        max-width: 80%;\n        margin-left: auto;\n        margin-right: auto;\n    }\n    @media (max-width: 700px) {\n        #irwin-project-module .section-title { font-size: 1.4rem; }\n        #irwin-project-module .title-main h1 { font-size: 1.5rem; }\n        #irwin-project-module .case-image { max-width: 85%; }\n        #irwin-project-module .image-caption { max-width: 95%; }\n    }\n<\/style>\n\n<!-- HTML\u7ed3\u6784\u5f00\u59cb\uff08\u9650\u5b9a\u5728\u5bb9\u5668\u5185\uff09 -->\n<div class=\"title-main\">\n    <h2>\u2693 Container-vessel central cooling pipe \u00b7 pipe-renewal project<\/h2>\n    <div class=\"subhead\">Asia-Pacific container vessel \u00b7 high-salinity, high-humidity environment | digital survey + global delivery | 100% prefabricated fit<\/div>\n<\/div>\n\n<div class=\"image-container\">\n    <img decoding=\"async\" class=\"case-image\" \n         src=\"https:\/\/www.irwin.com.hk\/wp-content\/uploads\/2026\/04\/252798bd237b4d582102f5697056e9d6.jpg\" \n         alt=\"\u4e9a\u592a\u96c6\u88c5\u7bb1\u8239\u73b0\u573a\u73af\u5883\u4e0e\u7ba1\u9053\u5e03\u5c40\">\n    <div class=\"image-caption\">\n        On site on the Asia-Pacific container vessel: high salinity, high humidity and a complex pipe layout \u2014 the Irwin team carries out the preliminary condition assessment\n    <\/div>\n<\/div>\n\n<div class=\"section\">\n    <h2 class=\"section-title\">Project Background<\/h2>\n    <p>A 7,500 TEU container vessel from a major international operator needed its seawater cooling system renewed, covering the critical cooling lines of the central-cooling module. After years in a high-salinity, high-humidity marine environment, the original pipework had developed serious internal corrosion and leaks \u2014 a direct threat to safe operation. The operator searched worldwide for a supplier of highly corrosion-resistant, high-precision prefabricated pipe to replace the traditional on-site fabrication approach.<\/p>\n    <p>With the container vessel's schedule tightly booked, the pipe replacement had to be completed within a fixed drydock window \u2014 any delay would be hugely costly. That demanded not only excellent product quality but also precise remote-survey capability and reliable global logistics.<\/p>\n<\/div>\n\n<div class=\"section\">\n    <h2 class=\"section-title\">Challenges &amp; Requirements<\/h2>\n    <p>The project faced three core challenges:<\/p>\n    <div class=\"grid-3\">\n        <div class=\"card\"><div class=\"num\">01<\/div><h4>Complex geometry &amp; demanding accuracy<\/h4><p>The pipework was geometrically complex, with many non-standard elbows, tees and reducers; copying the old pipe the traditional way was slow and could not guarantee accuracy.<\/p><\/div>\n        <div class=\"card\"><div class=\"num\">02<\/div><h4>Distorted old pipe, impossible to survey directly<\/h4><p>The old pipe was so corroded, with some joints distorted, that it could not serve as a physical template for direct measurement.<\/p><\/div>\n        <div class=\"card\"><div class=\"num\">03<\/div><h4>Cross-continent, hot-work-free, zero-error assembly<\/h4><p>The project spanned three continents \u2014 survey on board, manufacture in China, installation in Asia-Pacific \u2014 with no hot work possible on site.<\/p><\/div>\n    <\/div>\n    <div class=\"highlight-box\">\n        <p style=\"margin-bottom:0; font-weight:500;\">The client was explicit: the new pipe had to achieve<strong class=\"inline-highlight\">100% prefabrication, fit-on-arrival and zero on-site modification<\/strong>, at a competitive cost.<\/p>\n    <\/div>\n<\/div>\n\n<div class=\"section\">\n    <h2 class=\"section-title\">The Irwin Solution<\/h2>\n    <div class=\"image-container\">\n        <img decoding=\"async\" class=\"case-image\" \n             src=\"https:\/\/www.irwin.com.hk\/wp-content\/uploads\/2026\/04\/fbbae8e8f077465147b4c01073b3c0df.jpg\" \n             alt=\"Irwin \u6280\u672f\u4eba\u5458\u4f7f\u7528 Automet \u6570\u5b57\u6d4b\u91cf\u7cfb\u7edf\u8fdb\u884c\u4e09\u7ef4\u626b\u63cf\">\n        <div class=\"image-caption\">\n            Irwin engineers used the Automet\u00ae digital survey system aboard the container vessel to make a high-precision 3D scan, capturing the spools' as-built dimensions directly\n        <\/div>\n    <\/div>\n    <p>To meet these challenges, the Irwin team devised an integrated<strong>\"digital survey + centralised prefabrication + global delivery\"<\/strong>approach. First, Irwin technicians used the Automet\u00ae digital survey system aboard the container vessel to make a high-precision 3D scan of the in-service pipe, capturing as-built dimensions for every spool without removing the old pipe or relying on original drawings.<\/p>\n    <p>The survey data was sent in real time to the engineering centre at the Shenzhen factory, where the team turned it into an accurate 3D digital model and manufacturing isometrics. The workshop then cut, rotary-welded and assembled the spools to the digital model, with strict post-weld dimensional verification. Every spool was internally lined with rotary PE for fully sealed corrosion protection, and externally blasted and industrially coated.<\/p>\n    <p>Finally, all 32 prefabricated spools were independently inspected and pressure-tested, then packed and shipped by sea to the Asia-Pacific yard. The whole process closed the loop from digital model to physical product, eliminating on-site measurement, cutting and welding entirely.<\/p>\n<\/div>\n\n<div class=\"section\">\n    <h2 class=\"section-title\">Process<\/h2>\n    <p>The full project workflow:<\/p>\n    <div class=\"steps-wrap\">\n        <div class=\"step\"><strong>Digital survey<\/strong>On-board Automet 3D scan, building an as-built digital twin<\/div>\n        <div class=\"step\"><strong>Engineering conversion<\/strong>Processing the digital model into manufacturing drawings and isometrics<\/div>\n        <div class=\"step\"><strong>\u2702\ufe0f CNC cutting &amp; assembly<\/strong>Cutting, bevelling and tack-welding to the digital model<\/div>\n        <div class=\"step\"><strong>Welding &amp; verification<\/strong>TIG root + FCAW fill and cap, with post-weld Automet tolerance verification<\/div>\n        <div class=\"step\"><strong>PE lining<\/strong>Rotary lining forms a fully sealed polyethylene corrosion barrier<\/div>\n        <div class=\"step\"><strong>External coating<\/strong>Blast-cleaning + industrial epoxy coating<\/div>\n        <div class=\"step\"><strong>Final QC<\/strong>Pressure test, dimensional re-check and visual inspection<\/div>\n        <div class=\"step\"><strong>International logistics<\/strong>Custom-cradle packing and sea freight to the Asia-Pacific yard<\/div>\n        <div class=\"step\"><strong>On-site installation<\/strong>Bolted up directly at the yard, with no on-site trimming<\/div>\n    <\/div>\n<\/div>\n\n<div class=\"section\">\n    <h2 class=\"section-title\">Results<\/h2>\n    <div class=\"results-grid\">\n        <div class=\"result-card\"><div class=\"result-num\">100%<\/div><div><strong>First-time fit<\/strong><\/div><p>All 32 spools fitted first time, flanges perfectly aligned, with no on-site trimming<\/p><\/div>\n        <div class=\"result-card\"><div class=\"result-num\">\u221255%<\/div><div><strong>Major cost saving<\/strong><\/div><p>Versus a local Asia-Pacific yard, total procurement cost fell by about 55%<\/p><\/div>\n        <div class=\"result-card\"><div class=\"result-num\">5 days<\/div><div><strong>Schedule matched precisely<\/strong><\/div><p>From on-board survey to delivery in Asia-Pacific, fully meeting the drydock plan with zero delay<\/p><\/div>\n        <div class=\"result-card\"><div class=\"result-num\">over 15 years<\/div><div><strong>Quality commitment<\/strong><\/div><p>5-year drydock-to-drydock warranty, with PE lining expected to last over 15 years<\/p><\/div>\n    <\/div>\n    <div class=\"highlight-box\">\n        <p>\u2705 <strong>100% first-time fit<\/strong> \u2014 all 32 spools with flanges perfectly aligned.<br>\n        \u2705 <strong>Major cost saving<\/strong> \u2014 total procurement cost reduced by about 55%.<br>\n        \u2705 <strong>Schedule matched precisely<\/strong> \u2014 5-day global delivery, zero delay.<br>\n        \u2705 <strong>Lasting quality<\/strong> \u2014 5-year drydock warranty, with PE lining designed to last over 15 years.<\/p>\n    <\/div>\n<\/div>\n\n<div class=\"section\">\n    <h2 class=\"section-title\">Client Value<\/h2>\n    <p>Through this project the client gained a piping system exceeding new-build standards at far below local-yard cost \u2014 and, more importantly, experienced a wholly new maintenance model:<strong>\"digital survey, remote prefabrication, global delivery\"<\/strong>. This breaks free of the quality swings and schedule risk that come with traditional repair's reliance on manual on-site work and old-pipe copying, setting a repeatable benchmark for the fleet's later pipe projects.<\/p>\n    <div class=\"quote\">\n        \"After this success, the client has made Irwin a preferred supplier for global pipe-renewal services, with ongoing collaboration on retrofits for several more vessels.\"\n    <\/div>\n<\/div>\n\n<hr>\n<div style=\"font-size:0.8rem; text-align:center; color:#5c7c8a; padding:0.2rem 0 0.5rem;\">\n    ? \u9879\u76ee\u6267\u884c\u8303\u56f4\uff1a\u8239\u4e0a(\u6d4b\u91cf) \u2192 \u4e2d\u56fd\u6df1\u5733(\u5236\u9020) \u2192 \u4e9a\u592a(\u5b89\u88c5) | Automet\u00ae \u6570\u5b57\u5b6a\u751f\u96f6\u8bef\u5dee\u95ed\u73af\n<\/div>\n<div class=\"footer-note\">\n    \u00a9 Irwin Industrial Solutions \u2014 specialists in piping for highly corrosive marine environments | 100% prefabricated delivery \u00b7 rapid global response\n<\/div>\n<\/div><\/div><\/div>\n<\/div>\n<\/div>\n\n<div class=\"et_pb_row_3 et_pb_row et_flex_row\">\n<div class=\"et_pb_column_3 et_pb_column et-last-child et_flex_column et_pb_css_mix_blend_mode_passthrough et_flex_column_24_24 et_flex_column_24_24_tablet et_flex_column_24_24_phone et_flex_column_24_24_ultraWide\">\n<div class=\"et_pb_code_1 et_pb_code et_pb_module\"><div class=\"et_pb_code_inner\"><div class=\"hover-case-nav\">\n  <style>\n    .hover-case-nav {\n      position: fixed;\n      right: 0;\n      top: 25%;\n      transform: translateY(-50%);\n      z-index: 1000;\n      font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;\n    }\n    \/* \u89e6\u53d1\u5668\uff08\u7ad6\u5411\u6309\u94ae\uff09 *\/\n    .nav-trigger {\n      writing-mode: vertical-rl;\n      text-orientation: mixed;\n      background: #0B3B4A;\n      color: white;\n      padding: 1rem 0.5rem;\n      border-radius: 0.75rem 0 0 0.75rem;\n      font-size: 0.9rem;\n      font-weight: 600;\n      letter-spacing: 2px;\n      cursor: default;\n      transition: all 0.2s;\n      box-shadow: -2px 2px 8px rgba(0,0,0,0.1);\n    }\n    .nav-trigger:hover {\n      background: #4A90A4;\n      padding-right: 0.8rem;\n    }\n    \/* \u4fa7\u8fb9\u680f\u4e3b\u4f53 *\/\n    .nav-content {\n      position: absolute;\n      top: 50%;\n      transform: translateY(-50%);\n      right: 40px;\n      width: 260px;\n      background: #ffffff;\n      border-radius: 1rem;\n      box-shadow: 0 10px 25px -5px rgba(0,0,0,0.15);\n      border: 1px solid #e2e8f0;\n      padding: 0.8rem 0.7rem; 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