Steel pipe& coupler system Out diameter: 38.1mm, 42.3mm, 48.3mm, 48.6mm, 60.3mm(1/2’’-16’’) Thickness: 0.6mm-20mm Grade: q235b, q345b, s235jr, s275jr, stk400/500 Standard: bs1139, en39, en10219; jis g3444:2004 Surface finish: hot dipped galvanized, electro galvanized, black, painted, threaded. Zinc coating:275-600g/m2 Advantages: easy erection, strong loading capacity, safety and stability, Main components:steel pipe, coupler, catwalk, base jack Coupler: drop forged/casting sleeve coupler, fixed coupler, swivel coupler, putlog coupler, board retaining coupler, beam (girder) coupler Outer diameter(mm) Wall thickness(mm) Length(m) Weight(kg/m) 38 3.8 0.3-12 3.2 38 4.0 0.3-12 3.35 42.3 1.8 0.3-12 1.8 42.3 2.0 0.3-12 1.99 42.3 2.2 0.3-12 2.18 48.3 1.6 0.3-12 1.84 48.3 1.8 0.3-12 2.06 48.3 2.0 0.3-12 2.28 48.3 2.8 0.3-12 3.14 48.3 3.0 0.3-12 3.35 48.3 3.2 0.3-12 3.56 60.3 1.6 0.3-12 2.32 60.3 1.8 0.3-12 2.60 60.3 2.0 0.3-12 2.88