Asme B16.47 Ser,B Class150 Welding Neck Flanges price OUR FACTORY Shanxi Hongkai Forging Co., Ltd. is located in China Energy Heavy Chemical Industry Base. Dingxiang County, the hometown of forging in Shanxi Province. Convenient transportation, abundant coal and power resources, fast communication and superior environment. The company has three branches. PRODUCTION MARKET The products are...