ANSI B16.5 STAINLESS Steel Flanges Fabrikant, ASTM A182 304, 304L, 316, 316L, 316Ti, 317L, 310S, 321, 347, 904L, WN Flanges, LWN Flanges, SW Flanges, SW Gelenkflänzen, Plackeflänzen, rf, ff, rtj, tf face
- Zhengzhou Huitong Pipeline Equipment Co., Ltd.