... hardware1. Material: alloy steel, carbon steel, CM490, CM690 or according to your requirement.2. Size: 17.5mm-130mm3. Grade: U2, U34. ... Surface: black paint, hot dip galvanize or according to customer's requirement5. Certificate: LR, ABS, DNV, BV, NK ... England, Germany, Italy, Canda, America and so on.The specification of marine hardware anchor chainThe picture of marine hardware anchor ...