various seamless stainless piping and tubing Detailed Product Description Product Features:1)Round and Square Size: (16-530) x (1-20) x (4000 - ... specifications according to your requirements.2) Our products are corrosion and high-temperature resistant.3) Main grades 304, 304L, 316, ... 316L, 321, 321H, 310S, 347H.4) Standards: ASTM A312, ASTM A213, ASTM A269, ASTM A511 and GB/T14975-2002, GB/T14976-2002 ...