Welding neck flange, slip on flange, blind flange, socket welding neck flange, lap joint flange, thread flange. Dingxiang Huangxing Machinery Fabrication Co., Ltd. is one of professional enterprises specializing in forged flanges and forged rings. Our entire flanges are designed and manufactured according to ASME (ANSI), API, MSS, AWWA, BS, DIN, and JIS standards. We provide forged rings, winder ...