API SPEC 5L

API SPEC 5L

API SPEC 5L standard specifies requirements for the manufacture of two product specification levels (PSL 1 and PSL 2) of seamless and welded steel pipes for use in pipeline transportation systems in the petroleum and natural gas industries.

API SPEC 5L steel grade for PSL1 is A25, A, B, X42, X46, X52, X56, X60, X65, X70.  
As well, PSL2 is including B, X42, X46, X52, X56, X60, X65, X70, X80, X90, X100.

Tests for products according to API SPEC 5L standard mainly include Hydrostatic test, Bend test, Flatting test, Guided-bend test, CVN impact test for PSL2 pipe, Pipe body test, Pipe weld and HAZ test, DWT test for PSL2 welded pipe, Non-destructive tests.

Pipe grades,   steel grades and acceptable develivery conditions

PSL

Delivery   conditions

Pipe grade/Steel   gradea,b

PSL1

As-rolled,   normalizing rolled, normalized or normalizing formed

A25,   A25P,A

As-rolled,   normalizing rolled, thermomechanical rolled, thermomechanical formed,   normalizing formed, normolized and tempered; or, if agreed, quenched and   tempered for SMLS pipe only

B

As-rolled,   normalizing rolled, thermomechanical rolled, thermomechanical formed,   normalizing formed, normolized and tempered; or quenched and   tempered

X42,   X46, X52, X56, X60, X65, X70

PSL2

As-rolled

BR,   X42R

Normalizing rolled, normalizing formed, normolized or normolized   and tempered

BN,   X42N, X46N, X52N, X56N, X60N

Quenched   and tempered

BQ,X42Q,X46Q,X52Q,X56Q,   X60Q, X65Q, X70Q, X80Q

Thermomechanical   rolled or thermomechanical formed

BM,X42M,X46M,X52M,X56M,   X60M, X65M, X70M, X80M

Thermomechanical   formed

X90M,   X100M, X120M

 

 

Out Diameter Tolerance (mm(in)) for   pipe body

OD mm(in)

<60.3(2.375)

≥60.3(2.375) to ≤168.3(6.625)

>168.3(6.625) to ≤610(24)

>610(24) to ≤142256

>1422(56)

SMLS Pipe

-0.8(0.031) to +0.4(0.016)

±0.0075D

±0.0075D

±0.01D

As agreed

Welded Pipe

-0.8(0.031) to +0.4(0.016)

±0.075D 

±0.075D but maximum of ±3.2(0.125)

±0.005D but maximum of ±4.0(0.160)

As agreed