Roll fast manufacture ASTM A193 includes high tensile fasteners, which are composed of stainless steel or alloy. These bolts grades are basically used in the construction of chemical and petroleum development industry. The chief utilize of these bolting arrangements is in administrations related to high pressure and temperatures like valves, flanges, and pressure valves. These Astm193 bolts nuts and washer grades available in B7, B7m, B8, B8m, Grade 2h nuts, astm gr 8 nuts and f436, SS304 washer.