330 Flat Seat Union price list Our History Hebei Jianzhi Casting Group Co., Ltd. is one of the largest manufactures of Malleable Iron Pipe Fittings in China, and has the history of more forty years. and has the history of more than twenty Group Ltd. established in 1982 is marketing planning service support. The over 90% reorder rate is recognized to JIANZHI by every cooperative customer. 330 Flat Seat Union price list website:http://www.jianzhi-fittings.net/