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  • Line Pipe
  • Line Pipe
  • Line Pipe
  • Line Pipe
  • Line Pipe

Line Pipe

Category : Seamless Steel Pipe
Views : 514
Pipeline pipes are mainly used for pipelines that transport oil and natural gas. It is mainly used in oil, natural gas, chemical, electric power equipment and other industries.

Specifications:
Out Diameter:1/4 inch-36 inch
Wall Thickness:1.25 mm-50 mm
Length:3.0m-18m
Surface treatment:oil dipping, shot blasting, painting, etc.
Delivery status:annealed, normalized, normalized + tempered and other heat treatment states

Standard:
API Spec 5L- American Standard
GB/T9711-1999- National Standard
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Product Description

Pipeline pipes are mainly used for pipelines that transport oil and natural gas. It is mainly used in oil, natural gas, chemical, electric power equipment and other industries.

Specifications

Out Diameter

1/4 inch-36 inch

Wall Thickness

1.25 mm-50 mm

Length

3.0m-18m

Surface treatment

oil dipping, shot blasting, painting, etc.

Delivery status

annealed, normalized, normalized + tempered and other heat treatment states


Standard:
API Spec 5L- American Standard    

GB/T9711-1999- National Standard

Tolerances on Dimensions:

Standard:

OD Tolerance

WT Tolerance

API Spec 5L

D< 60.3mm

0.41mm,-0.8mm

15%/-12.5%

D≥ 60.3mm

±0.75%

GB/T9711-2

±0.5mm or ±0.75%

T≤ 4

0.6mm/-0.5mm

4≤T≤ 25

15%/-12.5%



Mechanical Properties:

Standard

Grade

Tensile strength
(MPa)

Yield strength
(Mps)

Elongation
(%)

GB/T9711-1

L245

415

245

≥21

L290

415

290

≥21

L320

435

320

≥20

L360

460

360

≥19

L415

520

415

≥17

GB/T9711-2

L245NB

415

245~440

≥22

L290NB

415

290~440

≥21

L360NB

460

360~510

≥20

L415NB

520

415~565

≥18

L450QB

535

450~570

≥18

API Spec 5L
PSL1/PSL2

BN

415~760

245~450

≥22

X42N

415~760

290~495

≥21

X52N

460~760

360~530

≥20

X56N

490~760

390~545

≥18

X60N

520~760

415~565

≥18

X65Q

535~760

450~600

≥18

X70Q

570~760

485~635

≥18

X80Q

625~825

555~705

≥18

X42NS

415~760

290~495

≥21

X52NS

460~760

360~530

≥20


Chemical Properties(%)

Standard

Grade

C

Si

Mn

P

S

V

Nb

Ti

GB/T9711-1

L245

≤0.27

-

≤1.15

≤0.030

≤0.030

-

-

-

L290

≤0.29

-

≤1.25

≤0.030

≤0.030

-

-

-

L320

≤0.31

-

≤1.35

≤0.030

≤0.030

-

-

-

L360

≤0.29

-

≤1.25

≤0.030

≤0.030

-

-

-

L415

≤0.26

-

≤1.35

≤0.030

≤0.030

-

-

-

GB/T9711-2

L245NB

≤0.16

≤0.40

≤1.10

≤0.025

≤0.020

-

-

-

L290NB

≤0.17

≤0.40

≤1.20

≤0.025

≤0.020

≤0.05

≤0.05

≤0.04

L360NB

≤0.20

≤0.45

≤1.60

≤0.025

≤0.020

≤0.10

≤0.05

≤0.04

L415NB

≤0.21

≤0.45

≤1.60

≤0.025

≤0.020

≤0.15

≤0.05

≤0.04

L450QB

≤0.16

≤0.45

≤1.60

≤0.025

≤0.020

≤0.09

≤0.05

≤0.06

API Spec 5L
PSL1/PSL2

BN

≤0.24

≤0.40

≤1.20

≤0.025

≤0.015

-

-

-

X42N

≤0.24

≤0.40

≤1.20

≤0.025

≤0.015

-

-

≤0.04

X52N

≤0.24

≤0.45

≤1.40

≤0.025

≤0.015

-

-

≤0.04

X56N

≤0.24

≤0.45

≤1.40

≤0.025

≤0.015

-

-

≤0.04

X60N

≤0.24

≤0.45

≤1.40

≤0.025

≤0.015

-

-

≤0.04

X65Q

≤0.18

≤0.45

≤1.70

≤0.025

≤0.015

-

-

≤0.06

X70Q

≤0.18

≤0.45

≤1.70

≤0.025

≤0.015

-

-

≤0.06

X80Q

≤0.18

≤0.45

≤1.70

≤0.025

≤0.015

-

-

≤0.06

X42NS

≤0.14

≤0.40

≤1.35

≤0.020

≤0.003

≤0.05

≤0.05

≤0.04

X52NS

≤0.16

≤0.45

≤1.65

≤0.020

≤0.003

≤0.10

≤0.05

≤0.04

As the proportion of oil and gas wells containing sulfur gradually increases in oilfield exploitation, the transmission line pipe from the exploitation to the desulfurization station contains a large amount of sulfide, which places higher demands on the performance of the transmission line pipe, Acid line pipe is the preferred choice for use in the above environment.

Seamless tubes are rolled using low sulfur, high purity steel with a calcium treatment, using the CPE or Assel rolling process with strict control of tube dimensions.

After heat treatment, the product performance can fully meet the performance index of API5L standard. We cooperate with the certified HIC and SSC laboratories, and in addition to the standard requirement testing, we also conduct sample testing during the testing process to ensure the corrosion resistance of the ex-factory products.

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