Hebei Borun Steel Trade CO.,LTD

 

TO BE YOUR BEST PARTNER IN STEEL WORLD ! 

 

 

Sales & Support
Request A Quote - Email
Select Language
English
Spanish
Home
Products
About Us
Factory Tour
Quality Control
Contact Us
Request A Quote
Home News

About API Steel Line Pipes

Good quality OCTG Accessories for sales
Good quality OCTG Accessories for sales
I'm Online Chat Now
Company News
About API Steel Line Pipes
About API Steel Line Pipes

Line pipe is manufactured mostly form high-strength carbon steel, and is made to strict engineering and metallurgical specifications developed by the American Petroleum Institute (API).

One particular standard, API Specification 5L, defines requirements for pipe made to transport natural gas, oil and water. This specification includes standards for the dimensional, physical, mechanical, and chemical properties of the carbon steel. Pipe mills produce 2 types of line pipe: Seamless and Welded.

However, in fact, most pipes produced for interstate natural gas pipelines are the welded type, because interstate systems require larger diameter pipe. The diameter for seamless line pipe is very limited form 3 inches to 24 inches. But welded line pipe can give more choices when it comes to larger sizes, which contains ERW pipe, LSAW pipe, and SSAW pipe with diameter 1 1/2 to 100 inches.

Below is the chemical composition and mechanical properties of Steel Line Pipes :

Chemical Composition:

 

SPEC

STEELGRADE

Mn 

 

Max 

Max 

Min 

Max 

Max 

API SPEC 5L 

PSL1 (GB/T9711.2)

 

A25II 

0.21

0.6

 

0.03

0.03

A25III 

0.21

0.6

0.45

0.8

0.03

0.22

0.9

 

0.03

0.03

0.28

1.2

 

0.03

0.03

X42 

0.28

1.3

 

0.03

0.03

X46.X52.X56 

0.28

1.4

 

0.03

0.03

X60.X65.X70 

0.28

1.4

 

0.03

0.03

PSL2 

0.24

1.2

 

0.025

0.015

X42 

0.24

1.3

 

0.025

0.015

X46.X52.X56 

0.24

1.4

 

0.025

0.015

X60.X65.X70.X80 

0.24

1.4

 

0.025

0.015

Mechanical Properties:

 

SPEC

STEEL

GRADE

YIELD STRENGTH

(MPa) 

TENSILESTRENGTH(MPa) 

ELONGATION

API SPEC 5L 

PSL1 (GB/T9711.2)

 

A25 

172

310

207

331

241

414

X42 

290

414

X46 

317

434

X52 

359

455

X56 

386

490

X60 

414

517

X65 

448

531

X70 

483

565

PSL2 

 

Min 

Max 

Min 

Max 

241

448

414

758

X42 

290

496

414

758

X46 

317

524

434

758

X52 

359

531

455

758

X56 

386

544

490

758

X60 

414

565

517

758

X65 

448

600

531

758

X70 

483

621

565

758

X80 

552

690

621

827

Tolerances:

 

SPEC

DIA

Thickness

A25.A.B 

X42-X70 

D<60.3 

+0.41/-0.40mm 

D<73 

+20/-12.5%

D≥73 

+15/-12.5%

API SPEC 5L 

D≥60.3 

+0.75/-0.40mm 

D≥73 

+15/-12.5%

D>73 

+15/-12.5%

 

About API Steel Line Pipes

Pub Time : 2013-04-08 09:42:38 >> News list
Contact Details
Hebei Borun Steel Trade CO.,LTD

Contact Person: Ms. Melody C.

Tel: 86-317-5501333

Fax: 86-317-5501333

Send your inquiry directly to us (0 / 3000)