Material:high-quality alloy steel(20Mn2,25MnV,23MnCrNiMo54,SAE8620);Size:6mm-34mm,Surface treatment:self color,black oxide,painted, plastic coating,black cataphoresis, hot dip galvanzied;Saftey
factor:min4times; standard:EN818-2
Contact:CINDY XU
Phone: 86-15996647669, 86-0513-84816599
Whats app: 86-15996647669
Email:cindy@watson-chain.com
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Web: www.watson-chain.com