Pipes

Carbon steel seamless pipe


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hot-rolled seamless pipe.pdf

cold-drawn seamless pipe.pdf

 

Carbon steel welded pipe


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1. Longitudinal Seam High Frequency Welded Pipe (ERW)

Item

Standard

Line Pipe

ISO3183-1,APL-5L

Oil Casing and Tubing

API-5CT

Pipe for Gas,Oil,Liquid Transport and Structural Pipe

ISO559
ASTMA53/A120/A135/A252/A500 BS1387,BS3601,BS4568
JIS-G3441/G3444/G3445/G3452/G3454
DIN17172

Square or Rectangular Pipe

ASTMA500.DIN59411

2. Longitudinal Seam Submerged-Arc Welded Pipe(LSAW)

3. Spiral Seam Submerged-Arc Welded Pipe (SSAW)

Item

Standard

Line Pipe

ISO3183-1,APL-5L

Pipe for Gas.Oil,Liquid Transport and Structural Pipe

ISO559
ASTMA53/A252/A134/A139/A211/A381
 BS1387,BS3601,BS4568
JIS-G5525/G3444/G3457
DIN17172

 

Other standard or material available on request

 

Stainless steel pipe


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Production Process (Seamless Pipe)

Steel round bar

Peeling

Inspection

Heating

Drilling









Lubricating

Pickling

End preparation

Inspection

Pickling









Cold drawing

Grinding

Annealing

Straightening

Pickling









Product storage

Packing

Marking

Testing/inspection

Cut-to-length

Outside Diameter: 6mm to 530mm

Wall Thickness: 1mm to 30mm


Standard

·ASTM A213/A269/A312/A249/A511/A789

·JIS G3459/G3463/G3448

·DIN 17456/17458


Grade

·TP304 TP304H TP304L

·TP316 TP316L

·TP321 TP321H

·TP310S TP317L TP347H


Production Process (Welded Pipe)

Material

Slitting

Forming

Auto-Welding

Seam Grinding









Hydraulic Test

Chamfering

Straightening

Annealing

Non-Destructive Testing









Pickling

Inspection

Making

Packing

Product Storage

Outside Diameter: 10mm to 1600mm

Wall Thickness: 0.5mm to 16mm


Other standard, grade or specification may be available on request


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