Weifang Changsheng Pipe Co., Ltd. lies in the high and new technology industrial development zone of Weifang - the world-famous International Kite Capital. We are an individually-run enterprise with high technology, and have the capabilities of manufacture, sale and customer service. Our business scope includes the manufacture and sale of ductile iron grooved couplings and fittings and steel plastic composite pipes. Our company has become one of the major suppliers in China and one of the ...