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ASTM A252 GR.3 Structural LSAW(JCOE) Carbon Steel Pipe

Short Description:

Grade:GR.1,GR.2,GR.3

Size: O.D.: 406~1500mm  W.T.: 8~50mm    

Payment:  30% Deposit, 70% L/C Or B/L Copy Or 100% L/C At Sight

Supply Ability:  More than 100000 tons to be produced in annual

Lead Time: 7-14 Days If In Stock, 30-45 Days To Produce

Surface Coating:  Bare/Black Varnish/3LPE/Galvanized/According to customer’ request.

End:  Plain/Beveled end

End Protector: Plastic pipe cap or Iron Protector

 

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Product Description of  LSAW Steel Pipe:

Style Technical Material Standard Grade
Longitudinal Submerged-arc Welded Pipe SAW Carbon Steel API 5L PSL1&PSL2 GR.B,X42,X46,X52,X60,X65,X70 ,etc
ASTM A252 GR.1,GR.2, GR.3
BS EN10210 S275JRH,S275J0H,S355J0H,S355J2H,etc
BS EN10219 S275JRH,S275J0H,S355J0H,S355J2H,etc

Manufacturing Process of ASTM A252 LSAW Steel Pipe:

Manufacturer of welded pipes

Longitudinal Submerged-arc Welded(LSAW) Pipe adopts submerged arc welding technology, using filler welding, particle protection flux buried arc.

LSAW is the English abbreviation of submerged arc welded straight seam steel pipe. The production process of submerged arc welded straight seam steel pipe includes JCOE forming technology, coil forming submerged arc welding technology and UOE forming technology.

The process of manufacturing Longitudinal Submerged-arc Welded(LSAW) Pipe is as follows:

Ultrasonic plate probing → edge milling → pre-bending → forming → Pre-welding → Internal welding→ External welding → Ultrasonic inspection → X-ray inspection → Expanding → hydraulic test →l. Chamfering → Ultrasonic inspection → X-ray inspection → magnetic particle inspection at tube end

lsaw pipe manufacturers

Chemical Composition:

The steel shall contain no more than 0.050 % phosphorous.

Tensile Requirements

Tensile Requirements

 

 Grade 1

 Grade 2

Grade 3

Tensile strength,  min, psi (MPa)

50 000 (345)

60 000 (415)

66 000 (455)

Yield point or yield strength, min, psi(MPa)

30 000 (205)

35 000 (240)

45 000 (310)

Basic minimum elongation for nominal wall thicknesses %6 in. (7.9 mm) or more:                   Elongation in 8 in. (203.2 mm), min, %                  Elongation in 2 in. (50.8 mm), min, %

18

30

14

25

...

20

For nominal wall thicknesses less than %6 in. (7.9 mm), the deduction from the basic minimum elongation in 2 in. (50.08 mm) for each Vzi - in. (0.8 mm) decrease in nominal wall thickness below %6 in. (7.9 mm), in percentage points

1.5A

1.25A

1.0A...

 

 Mechanical and NDT Tests for ASTM A252 LSAW  Steel Pipe:

jis g 3456 LSAW PIPE

NDT(RT) Testing

S355jr Carbon Steel  Welded Tubular

Hydrostatic Testing

psl2 pipe

Mechanical Testing

Bending Test— a sufficient length of pipe shall stand being bent cold through 90° around a cylindrical mandrel.

Flattening test-although testing is not required ,pipe shall be capable of meeting the flattening test requirements.

Hydro-static test—except as allowed ,each length of pipe shall be subjected to the hydro-static test without leakage through the pipe wall.

Nondestructive electric test-as an alternative to the hydro-static test ,the full body of each pipe shall be tested with a nondestructive electric test . where nondestructive electric test is performed,the lengths shall be marked with the letters”NDE”

The ultrasonic testing

The eddy current examination

Application of ASTM A252 LSAW Steel Pipe:

Pipe ordered under this specification is for pipe piles in which the steel cylinder acts as a permanent load-carrying member, or as a shell to form cast –in-place concrete piles.

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en10210 pipe
Low Price ASTM a 252  Steel Pipe Pile

 Tolerance of outside diameter ,wall thickness ,length and weight:

Outside Diameter The outside diameter of pipe piles shall not vary more than ±1% from the specified outside diameter.
Wall thickness The wall thickness at any point shall not be more than 12.5% under the specified nominal wall thickness.
Lengths Pipe piles shall be furnished in single random lengths, double random lengths, or in uniform lengths as specified in the purchase order, in accordance with the following limits: Single random lengths               16 to 25ft (4.88 to 7.62mm), inch
Double random lengths                 Over 25ft (7.62m) with a minimum average of 35ft (10.67m)
Uniform  lengths                      length as specified with a permissible variation of ±1 in.
Weight Each length of pipe pile shall be weighed separately and its weight shall not vary more than 15% over or 5% under its theoretical weight, calculated using its length and its weight per unit length.

Packing and Loading for ASTM A252 LSAW Steel Pipe :

Piling Pipe
pipe Piles
JCOE PIPE WITH 3LPE

CERTIFICATE

CERTIFICATE
ISO 9001 Certificate
certificate

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