... standard will be ASTM, JIS, EN, BS, GB, DIN and etc.Material will be 304, 321, 316L, 347L, 310S, ... 904l, 430, 410 and etc.Manufacturing engineering including hot rolling, cold rolling, hot expandLow ... large section dimension welding parts and equipments, such as petroleum chemical industry, fertilizer, papermaking, printing and dyeing and atomic energy industry with ...