... Mineral & EnergyTechniqueWelded,ERW Cold Rolled,Hot ... for Survival, Product for Development, Credibility for Cooperation and Service for Customer". And hold the belief of "quality for improvement, credit for developments and ... steel pipe manufacturing group. We have cooperated with Bao steel, Wu yang steel, TPCO, Baotou steel, Shou gang Jin tang Steel, An gang Steel, Daye Steel, HBIS and ...