Tubing pipes and couplings

 Tubing pipes and casing pipes with upset and plain ends and couplings for them. The diameters range is between 2.3/8 inches (60.3 mm) and 4.1/2 inches (114.3 mm) in accordance with the standards GOST 633 and API 5CT. Steel grade – J55, K55, M65, N80, L80, C90, C95, T95, P110 in accordance with API standard, or D, E, K, L, M – GOST.