Standard: GB/T12459, GB/T13401, SH3408, SH3409, HG/T21635, HG/T21631, ASME B16. 9, MSS SP-43, DIN 2605, JIS B2313
Size: Seamless Fittings 1/2"-20" (DN15-DN500), Welded Fittings 1/2"48" (DN15-DN1200)