Processing Tech:Forging Material:Carbon Steel, Stainless Steel Size:1/2''~120''(3000mm) Certificate:ISO9001:2000, PED, AD2000 Processing Technic: ForgingRaw ... Material: CS:A105(N), C22.8, ST-37.2, S400, S440, SQ235(CS20#),A106B ,A53,Q345 and etc ... , DIN, UN,EN,BS,GOST, NFE and etc.Size: 1/2~120 (3000mm)Non-standard: unit piece with diameter below 3 ...