Casing pipe R-1: 4.88~7.62m, R-2: 7.62~10.36m, R-3: 10.36m ~14. 60m . We supply all seamless ... Hot-rolled Seamless, ERW, LSAW Size (OD)4 1/2", 5", 5 1/2", 6 5/8", 7", 7 5/8 ... 18 5/8", 20", 30” Grade J55, K55, N80, L80-1, L80-9Cr, L80-13Cr, C90, T95, P110, P110-13Cr, Q125 ... CQ, RJS (compatible with VAM and HSC) Length range Range 1, 2, 3 Technical modifications Special clearance; For extra clearance ...