Material Information

Steel Grade - API Standard

Pipe material depends on application

Pipe Application Description Pipe Structure Material Group Steel Grade According to API standard


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
Group 2 X95,
G105, S135


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

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,
Group 4 Q125
(types 1, 2, 3 & 4), Q125-1


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
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