SPIRALLY WELDED PIPE

SPIRAL WELDED STEEL PIPE

Our spiral steel pipe production lines are equipped with advanced automatic double-sided submerged arc welding apparatus which produce the high-quality pipes with high density and permeating defending weld seam.

MAIN CHARACTERISTIC:

  • Reliable manufacture method
  • A wide range of steel grades and manufacture standard
  • Length up to 60m
  • Able to incorporate piling shoes, clutches or other fabricated components.
  • Internal lining and external protective coatings available

MAIN APPLICATION:

  • Piling: SSAW pipes are widely used in civil and marine construction as piling pipe
  • Casing for concrete piles for abutment and other structure
  • Oil, natural gas conveyance pipes: gas distributing pipeline, long-distance conveyance of oil, natural gas, etc

Transmission of raw materials

SIZE:

Outer Diameter: 219.1mm-3048mm

Wall Thickness:3.2mm-40mm

Length: 6 meter-60meter

End: square ends (straight cut, saw cut, and torch cut),  bevelled for welding, bevelled

QUALITY STANDARDS:

ASTM 252 Welded and Seamless Steel Pipe Piles

SY/T5037 Spiral submerged arc-welded steel pipe for pipelines for low-pressure field fluid service

SY/T 5040 Spiral submerged arc-welded steel pipe piles

CJ/T 3022 Spiral submerged arc-welded steel pipe for municipal heat supply

IS: 1978 Steel tubes for use in transportation of oil; gas & Petroleum products

TEST: Chemical Component Analysis, Mechanical Properties(Ultimate tensile strength, Yield strength, Elongation),

Technical Properties(Flattening Test, Bending Test, Blow Test, Impact Test), Exterior Size Inspection, Hydrostatic Test,

Pneumatic Test, Ultrasonic Testing (UT), X-ray Test.

Mill Test Certificate: En 10204/3. 1B

Third party inspection: SGS,BV,LLOYDS, etc.

SURFACE: Lightly oiled, Hot dip galvanized, Electro galvanised, Black, Bare, Varnish coating/Antirust oil,

Protective Coatings(Coal Tar Epoxy; Fusion Bond Epoxy, 3-layers PE)

COATING STANDARD:

ANSI/AWWA C104/A21.4 American National Standard for Cement-Mortar Lining for ductile-iron Pipe and Fittings for water

ISO 21809 Petroleum and natural gas industries-External coatings for buried or submerged pipelines transportation systems

DIN 30670 Polyethylene  coatings of steel and fittings

STEEL GRADE:

GB/T3091,SY/T5037,CJ/T3022:

Q195,Q215,Q275,Q295,Q345,08F,08,08AL,10F,10,HG5,DFO8 SPHC,M8

BS: 1387,EN10217:S185,S235JR,S235,G2H,S275,S275JR,S355JRH,

S355J2H,ST12,ST13,ST14,ST33,ST37,ST44,ST52

ASTM A 53: Gr.A,Gr B, Gr C, Gr.D

API5L: A,B,X46,X46,X52,X56,X60,X65 X7O

GB/T9711:L175,L210,L245,L290,L320,L360,L390,L415,L450,L458,L555

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