Unisite Group Ltd.

Longitudinal Saw Welded Pipe,Saw Welded Carbon Steel Pipes,Steel Carbon Saw Welded Pipes


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Saw welded carbon steel pipes

Basic Info

Model No.: USA-047

Dimension: As Per Drawing/order

Inspection: Material, Construction, Dimension, Welding Seam, N

Grade: 10#-45#, Q195-Q345, X42-X80, L245-L255 Or Other Ma

Standard: API 5L, BS 1387, GB/T 3091-2001, GB/T9711, ASTM A5

Certificate: API BV

Application: Marine Steel Structure And Dredging Field And Oil

Tolerance: High Accuracy(ISO2768, ISO5817, ISO13920); Detail:

Surface: Sa2.5 Blasted And Two Or Three Layers Painted With

Thickness: 5-60

Longitudinal Saw Welded Pipe: Saw Welded Carbon Steel Pipes

Additional Info

Packaging: bulk package and bulk vessel transportation; frame container package and frame container transportation

Brand: UniSite

Transportation: Ocean,Land

Place of Origin: china mainland(zhejiang)

Certificate: API/BV/ISO

Product Description

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). Deposition rates approaching 45 kg/h (100 lb/h) have been reported - this compares to ~5 kg/h (10 lb/h) (max) for shielded metal arc welding. Although currents ranging from 300 to 2000 A are commonly utilized,[2] currents of up to 5000 A have also been used (multiple arcs).

Saw Welded Carbon Steel Pipes

Welding Operation

The flux starts depositing on the joint to be welded. Since the flux when cold is non-conductor of electricity, the arc may be struck either by touching the electrode with the work piece or by placing steel wool between electrode and job before switching on the welding current or by using a high frequency unit. In all cases the arc is struck under a cover of flux. Flux otherwise is an insulator but once it melts due to heat of the arc, it becomes highly conductive and hence the current flow is maintained between the electrode and the workpiece through the molten flux. The upper portion of the flux, in contact with atmosphere, which is visible remains granular (unchanged) and can be reused. The lower, melted flux becomes slag, which is waste material and must be removed after welding.

The electrode at a predetermined speed is continuously fed to the joint to be welded. In semi-automatic welding sets the welding head is moved manually along the joint. In automatic welding a separate drive moves either the welding head over the stationary job or the job moves/rotates under the stationary welding head.

The arc length is kept constant by using the principle of a self-adjusting arc. If the arc length decreases, arc voltage will increase, arc current and therefore burn-off rate will increase thereby causing the arc to lengthen. The reverse occurs if the arc length increases more than the normal.[citation needed]

A backing plate of steel or copper may be used to control penetration and to support large amounts of molten metal associated with the process.

Main particulars



High accuracy(ISO2768, ISO5817, ISO13920); Detail: ID+/-2mm, Length within 5mm, straightness: <1mm/1m


10#-45#, Q195-Q345, X42-X80, L245-L255 or other materials


Spiral or Longitudinal single seam pipe or Longitudinal with crossing seams


As per drawing

Out diameter

Spiral: 219-3200mm

LSAW: 406-1420mm

SAW: 406-5080mm

Wall thickness

Spiral: 4-28mm

LSAW: 5-60mm

SAW: 5-150mm


API 5L, BS 1387, GB/T 3091-2001, GB/T9711, ASTM A53-2007, ASTM A252-1998

Special capacity

Can produce ID800*25 specification for Spiral Pipe


Sa2.5 blasted and two or three layers painted with highest quality


as per clients' requirements, normal weld stainless mark plate


material, construction, dimension, welding seam, non defective test, paint inspection


Recyclable, in line with environmental requirements and standards, and reliable

Photos of our Saw welded carbon steel pipes

Longitudinal Saw Welded Pipe Saw Welded Carbon Steel Pipes Steel Carbon Saw Welded Pipes for sale Steel Carbon Saw Welded Pipes

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Product Categories : Steel Pipe > Saw Pipe

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  • Saw welded carbon steel pipes
  • Saw welded carbon steel pipes
  • Saw welded carbon steel pipes
  • Saw welded carbon steel pipes
  • Saw welded carbon steel pipes
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