We Tianjin Boer King Steel Group, located Tianjin,China.
We special for Seamless steel pipe, Bolier tube, Alloy steel pipe, Galvanized steel pipe, Oil well casing drill pipe and some stainless steel products.
Material such as API 5L/A106/A53/A179/A192/A335 P11/P12/P9,/37Mn/34Crmo4/ K55/J55/N80/P110...