{"id":4945,"date":"2026-02-25T14:47:24","date_gmt":"2026-02-25T06:47:24","guid":{"rendered":"https:\/\/www.hankocraneparts.com\/?p=4945"},"modified":"2026-03-02T15:56:01","modified_gmt":"2026-03-02T07:56:01","slug":"crane-lifting-equipment","status":"publish","type":"post","link":"https:\/\/www.hankocraneparts.com\/ar\/crane-lifting-equipment\/","title":{"rendered":"Lifting Gear Inspection and Discard Criteria"},"content":{"rendered":"<h2><strong><b>Lifting Gear Inspection and Discard Criteria: Complete Safety Guide for Crane Hooks, Shackles, Chains and Wire Ropes<\/b><\/strong><\/h2>\n<p>&nbsp;<\/p>\n<p>Lifting operations are critical processes across industries such as construction, heavy manufacturing, offshore engineering, and port logistics. As the direct load-bearing interface between lifting equipment and loads, lifting gear plays a decisive role in operational safety.<\/p>\n<p>From crane hooks and shackles to welded chains, synthetic webbing slings, and steel wire ropes, improper selection, inadequate inspection, or delayed discard may lead to structural failure and serious accidents.<\/p>\n<p>International standards such as ISO lifting regulations and ASME rigging standards, together with Chinese GB standards, clearly define inspection and discard requirements. This guide provides a practical and field-oriented overview of lifting gear inspection, usage precautions, and mandatory discard criteria for industrial applications.<\/p>\n<h2><strong><b>Table of Contents<\/b><\/strong><\/h2>\n<p>1.Crane Hook Inspection and Safety Requirements<\/p>\n<p>2.Shackle Selection and Inspection Criteria<\/p>\n<p>3.Welded Chain Sling Wear and Discard Standards<\/p>\n<p>4.Synthetic Webbing Sling Damage Evaluation<\/p>\n<p>5.Steel Wire Rope Inspection and Replacement Rules<\/p>\n<p>6.FAQ \u2013 Lifting Gear Inspection and Safety<\/p>\n<h2><strong><b>1.<a href=\"https:\/\/www.hankocraneparts.com\/ar\/product\/crane-hook-parts\/\">\u062e\u0637\u0627\u0641 \u0627\u0644\u0631\u0627\u0641\u0639\u0627\u062a<\/a> Inspection and Safety Requirements<\/b><\/strong><\/h2>\n<p>Crane hooks are the most frequently used lifting components, and as such, they directly bear the entire load during hoisting operations. To deliver exceptional performance, manufacturers typically forge them from alloy steel and further heat treat them to achieve high strength and toughness.<\/p>\n<h3><strong><b>Safety Latch Requirement (Mandatory)<\/b><\/strong><\/h3>\n<p>For safe operation, users must equip every crane hook used in industrial lifting with an anti-detachment safety latch.<\/p>\n<p>The safety latch prevents sling disengagement caused by:<\/p>\n<ul>\n<li>Load swing<\/li>\n<li>Shock loading<\/li>\n<li>Improper rigging angles<\/li>\n<li>Vibration during lifting<\/li>\n<\/ul>\n<p>Operating hooks without safety latches is one of the leading causes of dropped-load incidents.<\/p>\n<h3><strong><b>Surface Inspection Standards<\/b><\/strong><\/h3>\n<p>Crane hooks must be inspected regularly for:<\/p>\n<ul>\n<li>Cracks<\/li>\n<li>Corrosion pits<\/li>\n<li>Sharp edges<\/li>\n<li>Surface deformation<\/li>\n<\/ul>\n<p>To maintain safe lifting conditions, operators should perform non-destructive testing methods such as magnetic particle testing or dye penetrant testing every 6\u201312 months.<\/p>\n<h3><strong><b>Crane Hook Discard Criteria<\/b><\/strong><\/h3>\n<p>Inspectors must scrap a crane hook immediately if:<\/p>\n<ul>\n<li>Any crack is detected<\/li>\n<li>Wear exceeds 10% of original section dimension<\/li>\n<li>Hook opening increases by 15%<\/li>\n<li>Twist deformation exceeds 10\u00b0<\/li>\n<li>Permanent plastic deformation occurs<\/li>\n<\/ul>\n<p>Operators must strictly prohibit any welding repair on crane hooks.<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter size-full wp-image-4946\" src=\"https:\/\/www.hankocraneparts.com\/wp-content\/uploads\/2026\/02\/dangerous-cross-sections-of-a-hook.webp\" alt=\"dangerous-cross-sections-of-a-hook\" width=\"650\" height=\"451\" srcset=\"https:\/\/www.hankocraneparts.com\/wp-content\/uploads\/2026\/02\/dangerous-cross-sections-of-a-hook.webp 650w, https:\/\/www.hankocraneparts.com\/wp-content\/uploads\/2026\/02\/dangerous-cross-sections-of-a-hook-300x208.webp 300w\" sizes=\"(max-width: 650px) 100vw, 650px\" \/><\/p>\n<h2><strong><b>2.Shackle Selection and Inspection Criteria<\/b><\/strong><\/h2>\n<p>Shackles are widely used connectors between lifting equipment and loads.<\/p>\n<p>The two common types include:<\/p>\n<ul>\n<li>D Shackles \u2013 suitable for straight-line loading<\/li>\n<li>Bow Shackles \u2013 suitable for multi-leg sling applications<\/li>\n<\/ul>\n<h3><strong><b>Correct Usage Requirements<\/b><\/strong><\/h3>\n<p>All shackles must:<\/p>\n<ul>\n<li>Display rated load marking<\/li>\n<li>Include manufacturer identification<\/li>\n<li>Use proper pin locking methods<\/li>\n<\/ul>\n<p>Operators must never use improvised replacements such as bolts or steel bars.<\/p>\n<h3><strong><b>Shackle Discard Criteria<\/b><\/strong><\/h3>\n<p>Operators must remove shackles from service if:<\/p>\n<ul>\n<li>Cracks or deformation are present<\/li>\n<li>Thread wear or stripping occurs<\/li>\n<li>Wear exceeds 10%<\/li>\n<li>Identification markings are missing<\/li>\n<\/ul>\n<h2><strong><b>3.Welded Chain Sling Wear and Discard Standards<\/b><\/strong><\/h2>\n<p>Operators commonly use welded chain slings in heavy-duty lifting applications, thanks to their flexibility and heat resistance.<\/p>\n<p>However, they are highly sensitive to:<\/p>\n<ul>\n<li>Impact loading<\/li>\n<li>Abrasive wear<\/li>\n<li>Overloading<\/li>\n<\/ul>\n<h3><strong><b>Key Inspection Points<\/b><\/strong><\/h3>\n<p>Operators must regularly measure:<\/p>\n<ul>\n<li>Chain diameter reduction<\/li>\n<li>Link elongation<\/li>\n<li>Surface cracks<\/li>\n<\/ul>\n<p>Even small diameter reduction significantly decreases load capacity.<\/p>\n<h3><strong><b>Chain Sling Discard Criteria<\/b><\/strong><\/h3>\n<p>Discard immediately if:<\/p>\n<ul>\n<li>Cracks appear<\/li>\n<li>Elongation exceeds 5%<\/li>\n<li>Diameter wear reaches 10%<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-4948\" src=\"https:\/\/www.hankocraneparts.com\/wp-content\/uploads\/2026\/02\/crane-hooks-type.webp\" alt=\"crane hooks type\" width=\"688\" height=\"607\" srcset=\"https:\/\/www.hankocraneparts.com\/wp-content\/uploads\/2026\/02\/crane-hooks-type.webp 688w, https:\/\/www.hankocraneparts.com\/wp-content\/uploads\/2026\/02\/crane-hooks-type-300x265.webp 300w\" sizes=\"(max-width: 688px) 100vw, 688px\" \/> <img decoding=\"async\" class=\"aligncenter size-full wp-image-4949\" src=\"https:\/\/www.hankocraneparts.com\/wp-content\/uploads\/2026\/02\/crane-hooks-chains.webp\" alt=\"crane hooks chains\" width=\"699\" height=\"343\" srcset=\"https:\/\/www.hankocraneparts.com\/wp-content\/uploads\/2026\/02\/crane-hooks-chains.webp 699w, https:\/\/www.hankocraneparts.com\/wp-content\/uploads\/2026\/02\/crane-hooks-chains-300x147.webp 300w\" sizes=\"(max-width: 699px) 100vw, 699px\" \/><\/p>\n<p>&nbsp;<\/p>\n<h2><strong><b>4.Synthetic Webbing Sling Inspection and Damage Evaluation<\/b><\/strong><\/h2>\n<p>Workers widely use synthetic slings because they are lightweight and easy to handle. Despite these practical benefits, they are also among the most frequently damaged lifting tools.<\/p>\n<h3><strong><b>Three Critical Usage Rules<\/b><\/strong><\/h3>\n<ul>\n<li>Never use slings without capacity labels<\/li>\n<li>Never overload<\/li>\n<li>Avoid sharp edge contact without protection<\/li>\n<\/ul>\n<h3><strong><b>Damage Classification<\/b><\/strong><\/h3>\n<table>\n<tbody>\n<tr>\n<td style=\"text-align: center;\"><strong><b>Damage Level<\/b><\/strong><\/td>\n<td width=\"398\">\n<p style=\"text-align: center;\"><strong><b>Action<\/b><\/strong><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\">Less than 5%<\/td>\n<td width=\"398\">\n<p style=\"text-align: center;\">Continue use with monitoring<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\">5\u201310%<\/td>\n<td width=\"398\">\n<p style=\"text-align: center;\">Downgrade to light-duty lifting<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td width=\"169\">\n<p style=\"text-align: center;\">Over 10%<\/p>\n<\/td>\n<td width=\"398\">\n<p style=\"text-align: center;\">Scrap immediately<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Operators must never repair or re-stitch damaged slings.<\/p>\n<h3><strong><b>Environmental Protection Requirements<\/b><\/strong><\/h3>\n<p>Operators must protect synthetic slings from:<\/p>\n<ul>\n<li>UV exposure<\/li>\n<li>Chemical corrosion<\/li>\n<li>High temperatures<\/li>\n<\/ul>\n<h2><strong><b>5.Steel Wire Rope Inspection and Replacement Rules<\/b><\/strong><\/h2>\n<p>Steel wire ropes are the primary load-bearing components in cranes and hoists.<\/p>\n<p>Proper inspection is essential for lifting safety.<\/p>\n<h3><strong><b>Minimum Drum Wrap Requirement<\/b><\/strong><\/h3>\n<p>When the hook reaches its lowest position, at least two wraps of wire rope must remain on the drum (excluding tail fixation turns).<\/p>\n<p>This prevents rope slippage and sudden load drop.<\/p>\n<h3><strong><b>Wire Rope Discard Criteria<\/b><\/strong><\/h3>\n<p>According to international lifting standards, wire ropes must be replaced if:<\/p>\n<ul>\n<li>Diameter reduction exceeds 40%<\/li>\n<li>Broken wires are concentrated within one lay length<\/li>\n<li>Structural deformation occurs (birdcage, crushing, kinks)<\/li>\n<li>Heat damage or core deterioration appears<\/li>\n<\/ul>\n<p>Routine lubrication and daily inspection are strongly recommended.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-4950\" src=\"https:\/\/www.hankocraneparts.com\/wp-content\/uploads\/2026\/02\/Hooks-are-used-on-cranes.webp\" alt=\"Hooks are used on cranes\" width=\"1209\" height=\"792\" srcset=\"https:\/\/www.hankocraneparts.com\/wp-content\/uploads\/2026\/02\/Hooks-are-used-on-cranes.webp 1209w, https:\/\/www.hankocraneparts.com\/wp-content\/uploads\/2026\/02\/Hooks-are-used-on-cranes-300x197.webp 300w, https:\/\/www.hankocraneparts.com\/wp-content\/uploads\/2026\/02\/Hooks-are-used-on-cranes-1024x671.webp 1024w, https:\/\/www.hankocraneparts.com\/wp-content\/uploads\/2026\/02\/Hooks-are-used-on-cranes-768x503.webp 768w\" sizes=\"(max-width: 1209px) 100vw, 1209px\" \/><\/p>\n<h2><strong><b>6.FAQ \u2013 Lifting Gear Inspection and Safety<\/b><\/strong><\/h2>\n<h3><strong><b>How often should lifting gear be inspected?<\/b><\/strong><\/h3>\n<p>Visual inspection should be conducted before each use, while formal inspections should be performed every 3\u201312 months depending on operating conditions.<\/p>\n<h3><strong><b>What is the most common cause of lifting gear failure?<\/b><\/strong><\/h3>\n<p>The most common causes include:<\/p>\n<ul>\n<li>Overloading<\/li>\n<li>Wear beyond discard limits<\/li>\n<li>Improper rigging methods<\/li>\n<li>Lack of routine inspection<\/li>\n<\/ul>\n<h3><strong><b>Can damaged lifting slings be repaired?<\/b><\/strong><\/h3>\n<p>No. Synthetic slings must be scrapped once structural damage exceeds allowable limits.<\/p>\n<h3><strong><b>Which standards govern lifting gear inspection?<\/b><\/strong><\/h3>\n<p>Common international standards include:<\/p>\n<ul>\n<li>ISO lifting standards<\/li>\n<li>ASME B30 series<\/li>\n<li>National rigging safety regulations<\/li>\n<\/ul>\n<h2><strong><b>Conclusion<\/b><\/strong><\/h2>\n<p>Although lifting gear may appear small compared to cranes and hoists, it forms the foundation of lifting safety. Proper inspection, correct usage, and strict adherence to discard criteria are essential for preventing accidents.<\/p>\n<p>Enterprises should implement full lifecycle lifting gear management systems covering procurement, inspection, maintenance, and replacement.<\/p>\n<p>Strict compliance with lifting gear safety standards ensures protection for personnel, equipment, and production continuity.<\/p>\n<h2>\ud83d\udd29 <a href=\"https:\/\/www.hankocraneparts.com\/ar\/crane-hooks\/\"><strong><b>Crane Hooks &amp; Hook Blocks \u2013 Hanko Crane Hooks<\/b><\/strong><\/a><\/h2>\n<p>Core load-bearing component in any lifting system.<\/p>\n<p>Available in single hook, double hook, swivel hook, and hook block assemblies.<\/p>\n<p>Custom designs for specific capacity and application conditions.<\/p>\n<p>Engineered for strength, safety, and fatigue resistance.<\/p>\n<p>&nbsp;<\/p>\n<p>\u27a1\ufe0f Ideal for: overhead cranes, gantry cranes, hoists, structure lifting.<\/p>","protected":false},"excerpt":{"rendered":"<p>Lifting Gear Inspection and Discard Criteria: Complete Safety Guide for Crane Hooks, Shackles, Chains and Wire Ropes &nbsp; Lifting operations are critical processes across industries such as construction, heavy manufacturing, offshore engineering, and port logistics. As the direct load-bearing interface between lifting equipment and loads, lifting gear plays a decisive role in operational safety. From [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4955,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[90],"tags":[],"class_list":["post-4945","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-sharing"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Lifting Gear Inspection and Discard Criteria - Hanko<\/title>\n<meta name=\"description\" content=\"Complete lifting gear safety guide covering inspection and discard criteria for crane hooks, shackles, slings, chains, and wire ropes\u2014reduce risks and improve lifting safety.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.hankocraneparts.com\/ar\/crane-lifting-equipment\/\" \/>\n<meta property=\"og:locale\" content=\"ar_AR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Lifting Gear Inspection and Discard Criteria - 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