I am Larry Sun, the Sales Manager of Radiant Steel Company based in China. The products we supply: A) Steel seamless tubes (Especially large thickness: 30mm-120mm):(OD: 88.9-711mm, Thickness: 2.5mm - 120mm)a. Tubing and Casing: API SPEC 5CT/5Bb. Line pipes: API SPEC 5Lc. Seamless Medium-Carbon Steel Boiler and Superheater tube: ASTM A210d. Boiler, Superheater and Heat Exchanger Seamless Ferrite and Austenitic Alloy steel tube: ASTM A213e. High Temperature Seamless Carbon steel Nominal Pipe: ASTM A106f. High Pressure Seamless Carbon Steel Boiler tubeg. Seamless Cold Drawing Carbon Steel tube for Heat Exchanger and Condenser: ASTM A179h. Steel Pipe for Pipeline, Vessel and Equipment Structure:St37.0/St44.0/St52.0i. Boiler tube: St35.8/St45.8/S15Mo3/13CrMo44/10CrMo910B) ERW Round Steel Tubes (ASTM/API 5L/API 5CT/EN standard) OD: 21.3mm - 406mm black ERW steel pipes for construction an convey oil-water-gas OD: 21.3mm - 219.1mm hot dip galva ERW steel pipes for construction and convey oil-water-gas Loading Port: Tianjin Port or Shanghai Port, China Payment: Irrevocable L/C at sightFor more products we provide, please refer to attached flyer or visit our website www.radiantmetal.com.