Shaanxi World Iron & Steel Co.,Ltd
Product Categories
Home > News > Content

What’s The Difference Of API 5L PSL 1 And PSL2 ?

Shaanxi World Iron & Steel Co.,Ltd | Updated: Feb 23, 2017

The API 5L specification provides standards for pipe suitable for convering gas, water, and oil in the natural gas and oil industries. Our company offer a range of APL 5l steel pipe.including Gr A, Gr B, X42, X46, X52, X56, X60, X70, x80 ect.

Process specification language (SPL for short)fall into two classes,PSL1 and PSL2.They are different in inspection,Chemistry,mechanical properties.and PSL2 higher than PSL1.So when order according to API 5l ,the PSL is usually set out in the contract including specifications and steel grades.




Grade range

A25 through X70

GR B through X80

Size range

0.405 through 80

4-2/1 through 80

Type of pipe ends

Plain-end, threaded-end,

bevelled-end,special coupling pipe


Chemistry: max C for welded pipe

0.26% for grades > Gr B


Chemistry: max P



Chemistry: max S

Only when purchases specifies SR18


Carbon equivalent


Maximum required for each grade

Yield strength, maximum


Maximum for each grade

UTS, maximum

None required

Maximum for each grade

Fracture toughness

Only when purchaser specifies SR4

Required for all grades

Non-destructive inspection of  seamless pipe


SR4 mandator


Certificates when specified per SR15



Traceable only until all tests are passedunless SR15 is specified

Certificates (SR15.1) mandatory

12.1 Traceable after completion

of 5.6 tests (SR15.2) mandatory

Seam welding

All methods continous welding limited to Grade A25

All methods except continous

and laser welding

Electric welds: welder frequency

No minimum

100 kHz minimum

Heat treatments of electric welds

Required for grades > X42

Required for all grades (GR B)

If you want to more information.please mail

Contact Us
Shaanxi World Iron & Steel Co.,Ltd
Address: NO.88 Xi'an International Trade &Logistics Park,Baqiao District,China
Tel: +86-029-83526770  Fax: 86-029-83526770
Copyright © Shaanxi World Iron & Steel Co.,Ltd    Friend Link:  Line Forming Machine