Our company makes galvanized steel tubes with various types and standards. Products are manufactured by the fine quality welding pipe through advanced equipments and techniques; products that made in such procedure are coming with even zinc coat, nice finish, smooth on inner and outer surface, and no black dot or bubble, well performance in corrosion resistance, be applicable in humid, strong caustic environment. Our products have now been distributed national wide, and exported to EU, North America, Middle East, Africa, Asia etc, and well received by customers! Implementation of standards：ASTM A53/A53M-1996 　BS1387-1985 　DIN2244 　GB3091-93