Our Suns International Trading Limited is a leading trading company of specializing in steel pipes and xxxxx supplying to USA, Canada, Europe and Southeast Asia, especially we have long-term good business cooperation with such as Toyota,Minmetals and Van Leeuwen etc. Our Dept. are supplying range includes tubing,casing, coupling, and drill pipe, Around 12 steel mills supply us all above products, and they all are API approvaled mills. The detail of supplying as below: Seamless Tubing: 2-3/8", 2-7/8", 3-1/2", the steel grade includes J55/K55, N80, L80, P110 SMLS We can offer above tubing with PE, NUE & EUE,as per API 5CT latest edition. ------------------------------ Seamless Casing: 4-1/2"~13-3/8", the steel grade includes J55/K55, N80, L80, P110 SMLS 18-5/8", 20", the steel grade just be J55, and these two size is ERW We can offer above casing with PE, LTC/STC/BTC, as per API 5CT latest edition. ------------------------------ Seamless Coupling: 2-3/8"~7",the steel grade includes J55,N80 SMLS We can offer above coupling with EUE&NUE as per API 5CT latest edition. ------------------------------ Drill pipe: 2-3/8"~6-5/8",the steel grade includes E-75,X-95,G-105,S-135 SMLS We can offer above drill pipe with EU & IEU as per API 5D latest edition. If you are interest in our products,please contact us without any hesitation.