Material grade include austenitic 304, 304L, 316L, 316Ti, 310S, 317L, 347H, 321, 904L, 2205 ,S31803 ,etc. The diameter ranges from 6mm to 325mm and wall thickness is from 0.7mm to 30mm. The products are strictly according to GB, ASTM, ASME, JIS, and DIN standards. Special materials and specifications can be supplied under negotiation.