首页 › 起重索具（卸扣·吊钩·吊带·花篮螺丝·绞盘）
起重索具（卸扣·吊钩·吊带·花篮螺丝·绞盘）
起重索具属于安全承载件，额定载荷(WLL)钢印、载荷试验与锻造等级比外观重要得多：G80 合金链与吊钩经过调质并逐批做载荷试验，G24/48 的普通链条无法靠改漆升级。采购要按批索取载荷试验证书，并确认 WLL 与规格钢印打在产品本体上。
产业带
山东青岛/胶州——锻造卸扣、吊钩与链条主产区；浙江台州——织带吊索与收紧器；江苏一带——钢丝绳索具
典型产品
材质
表面工艺
报价会引用的标准
规格参考表
| 参数项 | 需要约定的内容 |
|---|---|
| WLL range | 0.75 t to 25 t shackles; 1–25 t hooks; slings 1–10 t |
| Safety factor | 5:1 or 6:1 typical for forged lifting parts (declare it) |
| Proof load | 2x WLL for shackles; 1.5x CWL for webbing slings |
| Strap | 25–150 mm width, 500 kg–10,000 kg LC, standard/long-batch/UV-stable colours |
| Chain grade | G70 / G80 / G100, link tolerance and hardness HB 360–430 for G80 |
| Marking | WLL, grade, standard, heat/batch code, CE where EU-placed |
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买家常见问题
What documents should lifting goods ship with?
At minimum: the proof-load test record per batch, the material/ forging grade declaration, WLL and grade stamped on the product, and a CE/DoC if the goods are placed on the EU market. Receiving inspection should verify the stamp matches the paperwork, not only the weight.
Is Grade 80 chain worth the premium over Grade 70?
G80 is alloy and quench-tempered, allowing a smaller link diameter for the same working load, which cuts weight and lifting-equipment cost; G70 is transport chain rated only for lashing, not for lifting personnel or loads through a hoist. Do not substitute by size alone.