Astm A193 Heavy Hex Bolts Product description Name:ASTM A193 heavy hex bolts Material: carbon steel ,stainless steel(304/316),alloy steel, HGD Grade:B7/B7M/B16/B8/B8M Finish: black oxide, zink plated, HDG, teflon coated Supply ability:230tons per month Payment: T/T, L/C, Western Union, MoneyGram fasteners industry for many years, our technology is at the High-class level in fasteners industry and our products have the best quality. products are welcomed by our many clients which from North America ,Europe, Middle East and other regions. Because our main products have good quality and best prices. The company is a ISO 9001:2015 certified manufacturer of industrial fasteners. We also can supply the special bolts & screws and nuts according to your drawings and requirement.