Submerged arc welding pipe, SAW pipes

SAW pipes
Submerged arc welding (SAW) is a common arc welding process.

SAW is normally operated in the automatic or mechanized mode, however, semi-automatic (hand-held) SAW guns with pressurized or gravity flux feed delivery are available.

The process is normally limited to the flat or horizontal-fillet welding positions (although horizontal groove position welds have been done with a special arrangement to support the flux).

SAW pipe is made of hot rolled coiled steel by automatic submerged arc weld under normal atmospheric temperature. All the pipes are produced according to API Spec 5L, GB/T9711.1, GB/T9711.2, ASTM A252-89 standard. These pipes mainly used in petroleum and natural gas industry to transport flammable and non-flammable liquid and steel construction.

Size range:

(O.D×Wall Thickness)mm×Length(mm)

219-3200mm×5-30mm x 12000mm+500mm

In addition to above specification, the pipes can be produced according to customer’s requirements.

Execute Standard:

  • ASTM A252-89 WELDE AND SEAMLESS STEEL PIPE PILES
  • API SPEC 5L Specification for Line Pipe
  • GB/T9711.1 Petroleum and natural gas industries—Steel pipe for pipelines—Technical delivery conditions
  • SY/T5037 Spiral submerged arc welded pipe for low pressure liquid transportation

Material:

Q235-Q345, L175-L485, SS400, 16Mn, L290-L360
or according to the customer's requirements.

Pipe Coating: HDPE/ 3PE/ 3PP/ Pipe cement mortar lining

Mill Test Certificate: EN 10204/3.1B 
Third party inspection: SGS, BV, Lloyds etc.

Mainly usage:

Spiral welded steel pipes are widely used in Oil, Natural Gas, Water and other flammable & nonflammable liquid conveyance and distribution pipelines, steel structures for construction and other general purposes by means of their wide size range.



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