溶融亜鉛メッキグレード30耐用コイルチェーン
グレード 30 耐衝撃コイルチェーン
+86-13395162883 / +86-0510-86361180
中国江蘇省無錫市江陰市周荘鎮長寿村西張路25号
Grade 30 proof coil chain is a general-purpose, low-carbon welded steel chain designed for non-lifting applications such as cargo securing, towing, farm fencing, and light-duty tie-downs. It undergoes a proof load test (hence “proof”) but has no defined safety factor for lifting—making it unsuitable and unsafe for overhead lifting or personnel support. Typically ungraded (not marked with “G30” in many markets), it offers cost-effective strength for static or low-dynamic loads, with common sizes from 3/16″ to 3/8″.
