API SPEC 5 Lhigh frequency welded pipe ERW

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Tianjin
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10 m.t.
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3500 m.t./month

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Product Description:

 

 ERW Welded Steel Pipes

 

Application of API  ERW Line Pipes :

 

It is widely applied to line pipe and casing and tubing in oil transportation and casing field, and it is used in Low,high pressure liquid and gassy transportation and it is also good Structure pipe (for furniture, window, door, building , bridge, mechanical etc).

 

Package of  API  ERW Line Pipes:

bundles with anti-rust painting and with plastic caps

 

Standard of API  ERW Line Pipes:

API SPEC 5L, API SPEC 5CT, ASTM A53, GB/T9711.1

 

Steel Grade of API ERW Line Pipes:

API SPEC 5L: B, X42, X46, X52, X56, X60, X65

API SPEC 5CT: J55, K55, N80, L80-1

ASTM A53: A, B, C

GB/T9711.1:L242、L290、L320、L360、L390、L415、L450

 

Sizes of pipes of API ERW Line Pipes:

*Remark: Besides below sizes, we also can arrange production based on requirement of customers

 

 

OD

WT

WEIGHT

INCH

MM

SCH

MM

INCH

KG/M

LB/INCH

1 1/2”

48.3

STD-40

3.68

0.145

4.09

2.75

1 1/2”

48.3

XS-80

5.08

0.2

5.47

3.68

2”

60.3

STD-40

3.91

0.154

5.49

3.69

2”

60.3

XS-80

5.54

0.218

7.56

5.08

2 1/2”

73

STD-40

5.16

0.203

8.72

5.86

2 1/2”

73

XS-80

7.01

0.276

11.52

7.74

3”

88.9

STD-40

5.49

0.216

11.41

7.67

3”

88.9

XS-80

7.62

0.3

15.43

10.37

3 1/2”

101.6

STD-40

5.74

0.226

13.71

9.21

3 1/2”

101.6

XS-80

8.08

0.318

18.83

12.65

4”

114.3

STD-40

6.02

0.237

16.24

10.91

4”

114.3

XS-80

8.56

0.337

22.55

15.15

5”

141.3

STD-40

6.55

0.258

21.99

14.78

5”

141.3

XS-80

9.53

0.375

31.28

21.02

6”

168.3

STD-40

7.11

0.28

28.55

19.19

6”

168.3

XS-80

10.97

0.432

42.99

28.89

8”

219.1

STD-40

8.18

0.322

42.98

28.88

8”

219.1

XS-80

12.7

0.5

65.3

43.88

10”

273

STD-40

9.27

0.365

60.9

40.92

10”

273

80

15.09

0.594

96.95

65.15

12”

323.8

STD

9.53

0.375

74.61

50.13

12”

323.8

40

10.31

0.406

80.51

54.1

12”

323.8

XS

12.7

0.5

98.42

66.14

12”

323.8

80

17.48

0.688

133.38

89.63

14”

355.6

40

11.13

0.438

95.51

64.18

14”

355.6

XS

12.7

0.5

108.48

72.9

14”

355.6

80

19.05

0.75

159.71

107.32

16”

406.4

XS-40

12.7

0.5

124.55

83.69

18”

457

STD

9.53

0.375

106.23

71.38

18”

457

40

14.27

0.562

157.38

105.75

18”

457

80

23.83

0.938

257.13

172.78

20”

508

40

15.09

0.594

185.28

124.5

20”

508

80

26.19

1.031

314.33

211.22

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

                                                                                                                                                                                                                                        

Machinical Properties

Standard

Grade

(MPa)

(MPa)

Min(%)

Yield strength

Tensile Strength

Elongation

GB/T9711.1

L245

≥245

≥415

21

  L290

≥290

≥415

21

  L320

≥320

≥435

20

 L360

≥360

≥460

19

 L390

≥390

≥490

18

L415

≥415

≥520

17

L450

≥450

≥535

17

L485

≥485

≥570

17

 

 

Chemical Composition(%)

 

 

Standard

Grade

C

Mn

P

S

Max

Max

Max

Max

GB/T9711.1

L245

0.26

0.15

0.030

 0.030

L290

0.28

1.25

0.030

0.030

L320, L360

0.30

1.25

0.030

0.030

L390, L415

0.26

1.35

0.030

0.030

L450

0.26

1.40

0.030

0.030

L485

0.23

1.60

0.025

0.030

 

 

Standard: GB/9711.2

Mechanical Properties

 

 

Standard

Grade

(MPa)

Yield strength

(MPa)

Tensile Strength

Min(%)

Elongation

GB/T9711.2

Rt0.5Min

Rt0.5Max

RmMin

Rt0.5/Rm Max

L245

 

245

 

440

0.80

   

22

L245

0.85

L290

 

290

 

440

0.80

21

L290

0.85

L360

 

360

 

510

0.85

 

20

L360

0.85

L415

 

415

 

565

0.85

 

18

L415

0.85

L450

450

570

535

0.87

18

L485

485

605

570

0.90

18

 

 

Chemical Composition (%)

 

 

Standard

Grade

C

Mn

P

S

V

Nb

Ti

CEV

Max

Max

Max

Max

Max

Max

Max

Max

GB/T9711.2

L245NB

0.16

1.1

0.025

0.020

-

-

-

0.42

L290NB

0.17

1.2

0.025

0.020

0.05

0.05

0.04

0.42

L360NB

0.20

1.6

0.025

0.020

0.10

0.05

0.04

0.45

   L415NB

0.21

1.6

0.025

0.020

0.15

0.05

0.04

-

L245NB, L290NB

 

0.16

 

1.5

0.025

0.020

 

0.04

 

0.04

 

-

 

0.4

L360NB

0.16

1.6

0.025

0.020

0.05

0.05

0.04

0.41

L415NB

0.16

1.6

0.025

0.020

0.08

0.05

0.06

0.42

L450NB

0.16

1.6

0.025

0.020

0.10

0.05

0.06

0.43

L485NB

0.16

1.7

0.025

0.020

0.10

0.06

0.06

0.43

 

 

Standard: ASTM A53

Mechanical Properties

 

 

Standard

Grade

(MPa)

(MPa)

Yield strength

Tensile Strength

ASTM A53M

A

205

330

B

240

415

 

 

 Chemical Composition(%)

 

 

Standard

Grade

C

Mn

P

S

V

Ni

Cu

Cr

Mo

Max

Max

Max

Max

Max

Max

Max

Max

Max

ASTM A53M

A

0.25

0.95

0.05

0.045

0.08

0.4

0.5

0.4

0.15

B

0.30

1.20

   0.05

  0.045

0.08

0.4

  0.5

0.4

0.15

 

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Q:Water, gas, steel pipes, thick steel wire means?
Water pipes, gas pipes and other collectively known as water gas pipe, generally galvanized steel pipe, so it can be called water and gas pipe. Most of them are welded steel tubes made of low carbon steel.
Q:25 of the steel pipe with 6 in charge of what is the difference?
Outer diameter representation of steel pipe:When the design is nominal diameter DN means diameter, should be nominal diameter DN and the corresponding product specifications table. Specification for unplasticized polyvinyl chloride pipes for building drainage, de (nominal outer diameter) * e (nominal wall thickness), (GB, 5836.1-92), polypropylene (PP) pipe for water supply, specifications by de * e (nominal outer diameter * wall thickness).
Q:Can galvanized pipe be welded with seamless steel tube? What should I do to connect?
To look at the use of concrete after welding, if the stress is relatively large and thin galvanized pipe wall is recommended to not use welding, if the requirement is not high Po mouth welding should be welding depends on galvanized pipe material selection electrode generally no sealing material are 20
Q:What does "spiral welded steel pipe" DN325*10 mean?
Spiral welded steel pipe with nominal diameter of 325mm and wall thickness of 10mm
Q:How to calculate the maximum bending stress of steel pipe? Is there a list of the maximum flexural normal stresses for steel pipes of different materials and diameters?
Strength design of steel pipe by this formula to calculate the maximum normal stress in the steel pipe should be less than the value (based on your choice of different grades of steel, steel strength design value is not the same, this value can also be found through the design manual of steel structure), meet the requirements, it can meet the requirements of steel pipe under the action of bending moment strength.
Q:Difference between seamless steel pipe and welded pipe
Welded steel pipe for different welding process and divided into the furnace pipe welding (ERW) pipe and automatic arc welding, because of the different forms of welding seam welded pipe and spiral welded pipe is divided into two kinds, end its shape is divided into circular welded and shaped (square) pipe etc..
Q:How to make the internal tooth of the steel pipe?
Compared with the ordinary light pipe, tube can effectively prevent the formation of steam film between the seal and the pipe wall, increase the light disturbance flow inside the tube, the tube wall temperature is more uniform, which can avoid the light pipe damage, and improve the heat transfer efficiency of boiler. The number of thread head of internal thread pipe is 4, 6 head and 8 head according to need. The main materials are 20G, SA210C, T2, T12, 12Cr1MoVG, 15CrMoG, T22, T23 and so on. China needs 2.5~3.0 tons per year of inner thread tube.
Q:Hot galvanized steel pipe for use?
Hot galvanized pipe: in order to improve the corrosion resistance of steel pipe, galvanized steel pipe. Galvanized steel pipe hot galvanized and galvanized two kinds, hot galvanized, zinc coating thickness, zinc plating cost is low, the surface is not very smooth.The hot-dip galvanized pipe is an alloy layer that causes molten metal to react with the iron matrix, thus combining the substrate with the two coating. Hot dip galvanizing is the first steel pickling, in order to remove iron, steel pipe surface after pickling, cleaning by ammonium chloride or zinc chloride solution or ammonium chloride and zinc chloride aqueous solution tank, and then into the hot dip tank. Hot galvanizing has the advantages of uniform coating, strong adhesion, long service life and so on. A complex physical and chemical reaction is formed between the steel tube matrix and the molten plating solution to form a corrosion resistant structure with a tight zinc - iron alloy layer. The alloy layer is integrated with the pure zinc layer and the steel pipe matrix. Therefore, it has strong corrosion resistance.
Q:What's the difference between seamless steel pipe and welded pipe?
Seamless steel pipe having a hollow cross section, used as a conduit for conveying fluids, such as pipelines for transporting petroleum, natural gas, gas, water, and certain solid materials. Compared with the solid steel such as round steel, the steel tube is lighter in strength and is an economical section steel when the flexural strength and torsion strength are the same.Widely used in the manufacture of structural parts and mechanical parts, such as the oil pipe, automobile transmission shaft, the bicycle frame and steel construction with scaffold with steel pipe manufacturing circular parts, can improve the utilization rate of materials, simplify the manufacturing process, material saving and working hours, has been widely used to manufacture steel tube.
Q:What's the material of Q325 steel pipe?
Plain carbon structural steelIt's a kind of steel material. Q stands for the yield of this material, and the latter 325 means the yield value of this material, at around 325. And the yield value will decrease as the thickness of the material increases.

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