... type DN20 to type DN1200) water supply, gas supply pipe, PP-R Jiangsu Zhanwang Pipe Co., Ltd., located in No.111 Basi ... type DN20 to type DN1200) water supply, gas supply pipe, PP-R (from type DN20 to type DN160) cold & hot pipe, PE ... heating pipe and all pipe fittings, with annual sales of pipes and pipe fittings 50,000 tons.