... .Material:20Mn2 or 25Mnv 4.Automatic production machines 5.Grade 80 welded link chains 1) Grade: G80, G70, G60, G43, G302 ... , ASTM), European Standard (EN818), AS/NZS StandardWorking procedures for grade 80 link chains: 1. Receive the purchase order 2. Product requirement ... .612.530050022x652874.210.715.336661022x66287710.215.336661022x8626749.515.3366610 Grade 80 lashing Chain