SSAW Welded Pipes For Nature Gas Conveying

Steel pipe has been produced for about 150 years. The pipe sizes that are in use today in PVC and galvanized were originally designed years ago for steel pipe. The number system, like Sch 40, 80, 160, were set long ago and seem a little odd. For example, Sch 20 pipe is even thinner than Sch 40,...

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Steel pipe has been produced for about 150 years. The pipe sizes that are in use today in PVC and galvanized were originally designed years ago for steel pipe. The number system, like Sch 40, 80, 160, were set long ago and seem a little odd. For example, Sch 20 pipe is even thinner than Sch 40, but same OD. And while these pipes are based on old steel pipe sizes, there is other pipe, like cpvc for heated water, that uses pipe sizes, inside and out, based on old copper pipe size standards instead of steel.

Many different standards exist for pipe sizes, and their prevalence varies depending on industry and geographical area. The pipe size designation generally includes two numbers; one that indicates the outside (OD) or nominal diameter, and the other that indicates the wall thickness. In the early twentieth century, American pipe was sized by inside diameter. This practice was abandoned to improve compatibility with pipe fittings that must usually fit the OD of the pipe, but it has had a lasting impact on modern standards around the world.


SSAW spiral welded steel pipe for nature conveying


Product nameSpiral submerged arc welding steel pipe
StandardAPI 5L, GB/T9711, (conveying oil and gas standard) 
GradeB,X42,X52,X60,X65,X70 , Q235, L245, L290, L360, L415, L455 
applicationAs conveyer pipe in the fields of petroleum , heat, and natural gas, construction pipe, ground piling pipe
Outside diameter219-2800mm
Wall thickness5.00-25.00mm
Length6-30m
TechniqueDouble sides submerged arc welding steel pipe
CertificateISO9001:2008, API SPEC 5L
Package detailsin bundles, case packing, or bulk pack


Chemical Composition


API 5L

Steel Grade

C

Mn

P

S

Max

Max

Min

Max

Max

API SPEC 5L 
ISO 3183
GB/T 9711

PSL1

A25/L175

0.21

0.60


0.030

0.030

A25P/L175P

0.21

0.60


0.080

0.030

A/L210

0.22

0.90


0.030

0.030

B/L245

0.28

1.20


0.030

0.030

X42/L290

0.28

1.30


0.030

0.030

X46/L320,X52/L360,X56/390

0.28

1.40


0.030

0.030

X60/L415,X65/L450,X70/L485

0.28

1.40


0.030

0.030

PSL2

B/L245

0.24

1.20


0.025

0.015

X42/L290

0.24

1.30


0.025

0.015

X46/L320,X52/L360,X56/L390

0.24

1.40


0.025

0.015

X60/L415,X65/L450,X70/L485

0.24

1.40


0.025

0.015





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