Pipe material depends on application
API Spec. |
Pipe Application | Description | Pipe Structure | Material Group | Steel Grade According to API standard |
---|---|---|---|---|---|
5D |
Drilling |
Both pipe ends undergo the upsetting process. The drill bit is friction-welded to the end of the pipe. The thick pipe wall provides high distortion resistance. |
Group 1 |
E75 | |
Group 2 | X95, G105, S135 |
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5CT |
Casing |
Used as an outer protective covering for the pipe. Tubing pipe runs through the center, the casing protects it. Main sizes of casing pipe - Surface Casing: 13⅜ to 24”, Intermediate Casing 9 ⅝”, Production Casing 5 ½ to 7” |
Group 1 | J55, K55, N80 |
|
Group 2 | M65, C75, C75 9Cr & 13Cr, L80, L80SS, C90, C95, C95SS, C95 9Cr & 13Cr, C110, T95 |
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Tubing |
Used in production lines, the crude or gas flows through it. Main sizes of casing pipe, from 2 ⅜ to 5 ½”. |
Group 3 | P105, P110 |
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Group 4 | Q125 (types 1, 2, 3 & 4), Q125-1 |
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5L |
Line |
Normally used to transport the crude or gas to the refining plant. This type of pipe is used offshore and onshore, in extreme weather conditions. They are protected by a thick coating. Main sizes of line pipe, from 2 ⅜” to 80”. |
PSL 1 | A25, A, B ,X42, X46, X52, X56, X60, X65, X70 | |
PSL 2 | B, X42, X46, X52, X56, X60, X65, X70, x80 |