... MATERIAL, STAINLESS STEEL,23MnCrNiMo54, 20CrNiMo, 35CrMo, 40Cr, Q235, 20CrMnTi, 20Mn2, 45#4) SURFACE TREATMENT: COLOUR-PAINTED, SELF-COLORED, POLISHED,HOT-DIPPED ... MARKS CAN BE MADE ACCORDING TO CUSTOMER'S REQUIREMENT. SLR-001 WEBBING CONNECTING LINK