line              din17175/en10216-2 heat resisting seamless steel pipe lines              din 2391-1 cold drawn or cold rolled steel tube              api spec 5ct tubing and casing...
2nd Floor, Building M10, Central District, High-tech Industrial Park, Nanshan District, Shenzhen 2nd Floor, Building M10, Central District, High-tech Industrial Park, Nanshan District, Shenzhen