OD: 4 1/2"~13 3/8"(114.3~339.7mm) Steel grade: J55, K55, N80, L80, P110; Thread: STC, LTC and BTC; API Spec 5CT standard Size Range: 4 1/2"~20" Welding type: Seamless Steel Grade: J55, K55, N80, L80, P110, P110HC Length: R2, R3, fixed length according to the requirement T Hread: STC, LTC, BTC Special thread: XL, Premium, Antares, TMS, VAM
