Welded Steel Pipe Used for Gas Pipe

Chemical Composition 2.Product Show Package and Shipping Welding Procedure: Testing and inspection of the welding procedure for submerged ard welded(SAW) tubes are witnessed and approved in accordance with EN10217-1 Apperance and General: The weld areas are free from cracks, lack of fusion and...

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Product Details

Production Name

Welded Steel Pipe used for gas pipe


Brand

KWAYT

Size

OD

30-660mm

W.T

2-60mm

Length

5-12mm or as your requirement

Steel Material

ASTM A53,A106,A179-C,Q195,Q235,Q345,    DIN17175 St35.8,St33,St42

Usage

Petroleum, power, gas, chemical and medical equipment, construction, bridge, power engineering

Standard

ASTM ,DIN,    GB,JIS,BS

Technique

Hot rolled or Cold Drawn


Chemical Composition 

Standard

Type of steel

C

Si

Mn

P

S

Cu

Ni

Cr

Mo

V

ASTM A106

A

0.25

0.10

0.27-0.93

0.035

0.035

0.40

0.40

0.40

0.15

0.08

B

0.30

0.10

0.29-1.06

0.035

0.035

0.40

0.40

0.40

0.15

0.08

C

0.35

0.10

0.29-1.06

0.035

0.035

0.40

0.40

0.40

0.15

0.08

ASTM A53

A

0.252

/

0.95

0.50

0.60

0.40

0.40

0.40

0.15

0.08

B

0.35

/

1.20

0.50

0.60

0.40

0.40

0.40

0.15

0.0

 

2.Product Show

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Package and Shipping

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Welding Procedure: 
Testing and inspection of the welding procedure for submerged ard welded(SAW) tubes are witnessed and approved in accordance with EN10217-1
 
Apperance and General:

The weld areas are free from cracks, lack of fusion and lack of penetration
The tubes are free from external surface defects that can be detected by visual examination.

 

Leak-tigthtness:

The Tubes shall pass a hydrostatic test or electromagnetic test for leak-tightness

 

Non-Destructive Testing:

The full length of the weld seam of all EW and BW tubes ahll be subjected to a Non-Destructive test for detection of longitudinal imferfections

The full length of the weld seaml of all SAW tubes shall be subjuected to a Non-Destructive test for the detection of imperfections.

 

Straightness: 

The deviation from straightness, of any tube length L, shall not exceed 0.0015L.

Deviations from Straightness over any one meter length shall not exeed 3mm.

 

Preparation of ends:

Tubes shall be delivered with square cut ends. The ends shall be free from excessive burrs.



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