Tubing & Casing

OCTG

Tubing is used for transportingcrude oll and natural gas to surface after drilling, which also bears pressure from exploration. Casing is used for fastening oil and gas well wall or borehole, with bigger diameter than tubing, including surface casings, technical casings and Oil layer casings.

SCOTON is a specialist of supplying large OD casing pipe, from 20" to 30". We are the only one supplier in China with the capacity to produce casing pipes as large as 30", Our premium connection is specially designed for the casing with 0D above 14". It has dramatically improved the durability and overall performance of the large OD casing.

DESIGNATION	Size	Grade	Standard	Type of end
Tubing	1.315” 1.66” 1.9” 2-1/16” 2-3/8” 2-7/8” 3-1/2” 4” 4-1/2”	H40 J55 K55 M65 N80 N80-1 N80-Q L80-1 L80 9Cr L80 13Cr Super 13Cr C90 T95	API spec 5CT API spec 5B	Plain end Non-upset threaded External upset threaded
Casing	4 -1/2” 5” 5-1/2” 6-5/8” 7” 7-5/8” 8-5/8” 9-5/8” 10-3/4” 11-3/4” 13-3/8” 16” 18-5/8” 20”	H40 J55 K55 M65 N80 N80-1 N80-Q L80-1 L80 9Cr L80 13Cr Super 13Cr C90 T95 P110 Q125	API spec 5CT API spec 5B	Plain end Short round thread Long round thread Buttress thread Extreme-line

NON-API Series

High Collapse resistance casing
Casing for thermal wells
Corrosion resistant casing and tubing

Tubing & Casing

NON-API Series

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Gas Tight Thread (Premium Connection)

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