Which Beijing good quality steel pipe steel pipe steel pipe manufacturer Tiankun Company Information 0532 -8,633,555,582,341,111 Website: www.tiankungy.com mail: qdtiankun@126.com QQ: 2038671035 The company is specialized in steel plastic composite pipe, plastic cable casing, fire with epoxy composite steel, coal mine combined with coated steel pipes, valves and other products of the design, development, production, sales as one of the modern enterprise. Our products are widely used in coal mines, airports, subways, electricity, telecommunications, municipal, urban construction, highways, bridges and other firefighting pipes, all kinds of drainage works and various cable casing.