API 5L Seamless Pipe

SEAMLESS PIPE

(SMLS) is made when steel in a solid, round cylindrical shape, called a “billet” or a “tube round” is heated and then

either pushed or pulled (while being rapidly rotated) over a mandrel with a piercing point positioned in the center

of the billet. This activity produces a hollow tube or “shell”. The tube is then further finished until it becomes the size

and wall thickness desired. (Because the pipe is formed in a heated manner the pipe is normalized and should have a

consistent steel cellular pattern throughout its circumference).

Download Technical Specifications

Description

Seamless pipe is made in sizes from 1/8” to 26” and is widely used in:

– Construction

– Oil refining

– Chemical and

– Petro-chemical industries.

It is available in heavy wall thicknesses and exotic chemistries, and is suitable for coiling, flanging and threading.

Seamless pipe is available in the following specifications:

A53 Type S, which is seamless pipe, produced by hot working and possibly cold finishing, the steel (Grades A and ASTM A53) Type S is now currently an outdated specification and has been replaced by ASTM A106 specification for
seamless carbon steel pipe.

A-106 (ASTM A106 Seamless Pressure Pipe) Grades A.B, and C;

A-252 Grades 1, 2, and 3;

A-333 Grades 1 through 9; A-335 Grades P-1 through P-22;

A-501, A-523, A-589,

API5L Grades A & B, and

API5L X-42 through X-65.