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Products & Services - Line Pipe & OCTG -Line Pipe

Line Pipe and Related Materials

Line Pipe

Oil and gas line pipe include spiral seam submerged arc welded (SSAW) pipe, longitudinal seam submerged arc welded (LSAW) pipe, longitudinal seam electric resistance welded (ERW) pipes and seamless (SMLS) pipes.

Line pipe in use

Specifications

  • API Spec 5L Specification for line pipe;
  • ISO 3183 Petroleum and natural gas industries-steel pipe transportation systems;
  • DIN 17172 Steel pipe lines for the transport of combustible fluids and gases;
  • Other related specifications and standards.

Production Capacity

Dimensions of SSAW Pipe

Note: SSAW with dimensions between above parameters available, too.
Process Flowchart of SSAW pipe
Uncoiling Leveling Shearing, butt welding, trimming& milling edge
 
Uncoiling
Forming, inside & outside welding Cutting off Cleaning, inspecting weld seam
 
Uncoiling
Repairing welding,grinding Pipe end sizing Pipe ends beveling
 
 
Uncoiling
X-ray continuous inspecting Hydrostatic test Ultrasonic inspection
 
Uncoiling
Visual & dimension inspection Weighing & measuring Marking
 
Uncoiling        
Uncoiling
Part of production line of SSAW pipe

Dimensions of LSAW Pipe

Note: LSAW with dimensions between above parameters available, too.
Process flowchart of LSAW pipe
Plate UT Edge milling Pre-bending JOC forming
 
Continous tack welding Inside welding Outside welding Ultrasonic testing
 
X-ray testing Mechanical expanding Hydrostatic testing
 
Weld grinding for pipe end End chamfering Ultrasonic testing
 
X-ray testing Ultrasonic testing for both end Weighing & measuring
 
Visual & dimension inspection External coating Internal coating
 
Marking Packing and storage
 
Part of production line of LSAW pipe

Dimensions of ERW Pipe

Note: ERW with dimensions between above parameters available, too.
Process flowchart of ERW pipe
Uncoiling Leveling End shearing & welding Loop storing
 
Trimming, plate UT Forming, electric resistance& HF welding Ultrasonic testing of weld seam
 
Post annealed Cooling ,sizing, straightness Cutting off
 
End beveling Hydrostatic test Ultrasonic testing of weld seam
 
Ultrasonic testing of pipe ends Visual & dimension inspection Corrosion resistant coating
 
Weighing& measure Marking Pipe end protection
 
Bundling, shipping
 
Part of production line of ERW pipe

Dimensions of Seamless Pipe (Plain-end)

OD (mm):60.3-323.9, Wall thickness (mm):6.35-12.7.
Seamless line pipes with the max. OD of 46 in (1 200 mm) are available too.