ANSI B16.5 Stainless Steel Flens fabrikant, ASTM A182 304, 304L, 316, 316L, 316Ti, 317L, 310S, 321, 347, 904L, WN flenzen, LWN flanges, SW flanges, SW flanges, SW flanges, joint flanges, plate flanges, rf, ff, rtj, tf face
- Zhengzhou Huitong Pipeline Equipment Co., Ltd.