Casing is mainly applied in oil field, oil well and gas well, water injection well, geothermal well, and as the lining
Product standards:API Spec 5CT, API Spec 5B, ISO 11960, ISO 10422
Steel grade:
J55, K55, M65, L80/R95, N80-1/N80-Q, C90/T95, C110, P110, Q125
Type of end-finish:
Plain end (PL), short round thread (STC), long round thread (LTC), buttress thread (BTC)
Length:
Range 1: 4.88-7.62m Range 2: 7.62-10.36m
Range 3: 10.36-14.63m
Protection:
Black and bare
External varnished with black or clear lacquer