Casing, is the structural retainer for the walls of oil and gas wells, Casing sizes from 4.5 to 20 inches O.D. inclusive, wall thickness from 5.21 mm to 15.88 mm.
Tubing, is used within the casing to convey the oil or gas to the ground surface, Tubing sizes from 1.050 to 4.5 inches O.D. inclusive, wall thickness from 3.18 mm to 10.54 mm.
Drill Pipe, is the seamless steel pipe used to drill the well by transmitting power to a rotary drilling tool from the surface to below ground level,the dirll pipes cover sizes form 2 3/8 to 6 5/8 inches O.D. inclusive, wall thickness from 6.88 mm to 12.7 mm.
Oil Country Tubular Goods (OCTG) Pipes are manufactured according to API (American Petroleum Institute, API SPEC 5CT, API 5DP) Specifications. also available to ISO 9001:2008.
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