Fabricante de flanges de aço duplex e super duplex ANSI B16.5, ASTM A182 F44, F45, F51, F53, F55, F60, F61, flanges WN, flanges LWN, flanges SW, flanges roscados, flanges cegos, flanges, flanges de junta sobreposta, flanges de placa, rf, ff, rtj, tf face
- Zhengzhou Huitong Pipeline Equipment Co., Ltd.