To be used as Water steel pipe, Oil pipe and Gas pipe. All spiral welded seams are under Submerged Arc Welding for both inside and outside.
  • Machine Capacity : ND.6"- ND.144 " (ND.150 - ND.3,600 mm)
  • Production Capacity : 100,000 Metric tons / year
Step01
Steel Coil to Standard JIS G 3101 grade SS400 or as on request

Step02
Slitting Machine
to Divide Width of Steel Coil as Requirement
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Step03
Forming
Spiral Forming Machine to from Spiral Steel Pipe by Tandem (2 Welding Heads) or 3 Welding Heads for Submerged Arc Welding for both inside and outside, DC/AC Method to get full penetration
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Step04
End Expansion
Pipe End Expansion to form Spigot and Socket Ends
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Step05
End Facing
Pipe End is being cut and bevelled at specified degree
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Step06
Hydro Test
Pipe is under hydrostatic test at Spectified pressure
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Step07
Blasting
Grit Blasting to SA 2.5 Standard or as on request
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Step08
Internal Painting
Inside Liquid Epoxy painting to AWWA C210 Standard min. 406 microns DFT.
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Step09
External Coating & External Wrapping
External Coating to AWWA C222 Standard,consisting of PU (Polyurethane) & External Wrapping AWWA C214
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Step10
Cement Lining
inside Lining shall be cement mortar in accordance with AWWA C205 Standard
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