Smls Oil Well Casing Pipe

api 5ct 18 5/8 inch p110 oil well casing pipe material:p110 size:18 5/8" wall thickness:4-16mm length: r1(4.88m-7.62m)/r2(7.62m-10.36m)/r3(10.36m-14.63)  coupling:  btc (buttress thread coupling),                   stc (stub(short) thread connector),                   ltc (long thread connector)                   nue/eue/vam or no thread   certificates:api5l, iso 9001:2008,sgs, bv,ccic surface treatment:external surface coating (black painted), mark as api 5ct stanard,varnish, oil chemical component standard grade chemical component(%) c si mn p s cr ni cu mo v als api spec 5ct j55k55 (37mn5) 0.34~0.39 0.20~0.35 1.25~1.50 ≤0.020 ≤0.015 ≤0.15 ≤0.20 ≤0.20     ≤0.020 n80 (36 mn2v) 0.34~0.38 0.20~0.35 1.45~1.70 ≤0.020 ≤0.015 ≤0.15       0.11~0.16 ≤0.020 l80(13cr) 0.15~0.22 ≤1.00 0.25~1.00 ≤0.020 ≤0.010 12.0~14.0 ≤0.20 ≤0.20     ≤0.020 p110, (30crmo) 0.26~0.35 0.17~0.37 0.40~0.70 ≤0.020