... , Mineral & EnergyTechniqueWelded,ERW Cold Rolled,Hot RolledSurfaceBared, Galvanized, Black Oiled,Or Other Anti-corrosive Treatment.We can ... mainsDeep tube wells casing pipes, Gas/Natural gas pipe lines, Oil pipe lines, LPG & other non-toxic gas pipelinesIndustrial ... the production and selling of square, round, rectangular pipe surfaced with galvanized coating, polish, black painting and oiled . Since ...