Size Range2 3/8"~4 1/2" Steel Grade: J55, K55, N80, L80, P110, P110HC Thread: IU, EU, NU Size Range2 3/8"~4 1/2" Welding type: Seamless Steel Grade: J55, K55, N80, L80, P110, P110HC Length: R2, R3, fixed length according to the requirement Thread: IU, EU, NU Special thread: XL, Premium thread, Antares, TMS, VAM
