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Round Mechanical Tubing

Type: Alloy Pipe, Alloy Tube, Alloy Steel Pipe, Alloy Steel Tube
Application:
 In Petroleum, Aerospace, Chemical, Power, Boilers, Military Industry

Specification: Outside Diameter: 30mm ~ 150mm
                          Wall Thickness: 2.5mm ~ 25mm
                           Length: Single Random, Double Random, Cut Length max to 23m

Standard & Grade: ASTM A519 4130/4140/4142

End: Plain End, Beveled End, Thread End

Packing:Bundled with Hemp Roap/In Bulk

               

This pipe covers for several grades of carbon and alloy steel mechanical tubing, either hot-finished or cold-finished. The steel used in the mechanical tubing may be cast in ingots or may be strand cast. When steel of different grades is sequentially strand cast, identification of the resultant transition material is required. The seamless tubing is a tubular product made without a welded seam. It is usually manufactured by hot working steel, and if necessary, by subsequently cold finishing the hot-worked tubular product to produce the desired shape, dimensions and properties.

The tubes shall be furnished in the following shapes: round, square, rectangular and special sections. Heat analysis shall be made to determine the percentages of the elements specified. If secondary melting processes are used, the heat analysis shall be obtained from one remelted ingot or the product of one remelted ingot of each primary melt. The tubing shall be coated with a film of oil before shaping to retard rust when specified 

 

1. Out Diameter:

13.7mm-914mm 

2. Wall Thickness:

2mm-120mm

3. Length:

3m-12m

4. Producing Standard:

American ASME B36.10M, ASTM, API 5L, API 5CT

Japanese JIS

German DIN

Chinese GB

BS standard

5. Main Material:

(Carbon Steel & Low Alloy steel)

ASTM A53, A106, A210, A252, A333 etc;

X42, X46, X52, X60, X65, X70 etc;

JIS STPG42, G3454, G3456 etc;

German St37, St42, St45, St52, DIN1626, DIN17175

Chinese 20#, Q345, 16Mn etc

6. Special specifications:

Available according to customers requirements and quantity.

7. End Shape:

Beveled end , plain end, varnished, or adding plastic caps to protect the two ends as per customers requirements

8. Surface treatment:

Painted, Oiled, galvanized, phosphate etc

9. Usage:

Widely used in the mechanical treatment field, petrochemical industry, transport and construction field

Ordinary structural purposes and mechanic structural purposes, for example in construction field, fulcrum bearing etc;

The transportation of fluids in the projects and big equipments, for example transport of water, oil, gas etc

Can be used in low and medium pressure boiler for the transportation of fluids, for example steam tube, big smoke tube, small smoke tube, generating tube etc

10. Certificates:

ISO,CE, API 5L certificate

11. Third party inspection:

Welcome you to send a third party inspecting company (BV, SGS etc) to check the quality of our final products.

Chemical Composition ( % ) :

The Chemical Composition for Carbon steel 

Grade

Chemical composition (%)

C

Mn

P

S

1010

0.08-0.13

0.30-0.60

=0.040

=0.050

1020

0.18-0.23

0.30-0.60

=0.040

=0.050

1045

0.43-0.50

0.30-0.90

=0.040

=0.050

1518

0.15-0.21

1.10-1.40

=0.040

=0.050


 

The Chemical Composition for Alloy Steel

Grade

Chemical composition (%)

C

Mn

P max

S max

Si

Ni

Cr

Mo 

4118

0.18-0.23

0.70-0.90

0.04

0.04

0.15-0.35

-

0.40-0.60

0.08-0.15

4130

0.28-0.33

0.40-0.60

0.04

0.04

0.15-0.35

-

0.80-1.10

0.15-0.25

4135

0.32-0.39

0.65-0.95

0.04

0.04

0.15-0.35

-

0.80-1.10

0.15-0.25

4140

0.38-0.43

0.75-1.00

0.04

0.04

0.15-0.35

-

0.80-1.10

0.15-0.25

 

Mechanical Properties :

Grade

State

Tensile Strength 

Yield Strength

Elongation

Hardness 

Ksi

Mpa

Ksi

Mpa

%

(HB)

1020

HR

50

345

32

221

25

55

CW

70

483

60

414

5

75

SR

65

448

50

345

10

72

A

48

331

28

193

30

50

N

55

379

34

234

22

60

1045

HR

75

517

45

310

15

80

CW

90

621

80

552

5

90

SR

80

552

70

483

8

85

A

65

448

35

241

20

72

N

75

517

48

331

15

80

4130

HR

90

621

70

483

20

89

SR

105

724

85

586

10

95

A

75

517

55

379

30

81

N

90

621

60

414

20

89

4140

HR

120

855

90

621

15

100

SR

120

855

100

689

10

100

A

80

552

60

414

25

85

N

120

855

90

621

10

100