Shijiazhuan Dingsheng Pipe Co.,Ltd. We are a specialized steel pipe supplier in China. Our factory is located in Mengcun, where is known as pipes and fittings ( including steel elbow, tee, reducer ,bend, as well as flanges ),near to Beijing, Tianjin. That is convenient to get the direct price and assured quality. Our major standards are ASME, DIN, GB, JIS，MSS. We have successfully passed ISO9001 and API certification.