... welded and seamless2) Size: DN15-DN1200 (1/2"-48").we can also produce other specifications according to customers' requirements . 3) ... , GB/T13401, SH3408, SH3409, HG/T21635, HG/T21631, MSS SP-43, DIN 2605, JIS B2313. 5) Material: Stainless steel ( ... ,321, 321H, 310S, 347H,S31803,904L,)6) Applications range: For use in the petroleum, smelting, foodstuff, power, papermaking, chemical, medical equipment, ...