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, mienskiplike flanges, plaatflenzen, rf, ff, rtj, tf face
- Zhengzhou Huitong Pipeline Equipment Co., Ltd.