1.We use stainless steel that its A2 or A4(304/316) for the product2.Have it mostly DIN933/931/603/315/975 and so on.3.Diameter Standard bound :M10mm--M62mm ,the screw length 100mm-650mm4.Our CO.produce ANSI/ASME bolt catena,For example 1/2.3/8.5/8.3/4.2/3.3/2and so on5..Diameter Standard bound :3/8inch----3/2inch,the screw length1.5inch--20inch
