Electric Resistance Welded/High Frequency Weld Pipe
*High Frequency Longitudinal Seam Welded Steel Pipe is also called ERW steel pipes, is the abbreviation of Electric Resistance Welded steel pipes, featuring cost efficiency and a closer tolerance of wall thickness when compared with seamless steel pipe.
It is widely used in fencing, scaffolding, engineering, etc.

Specifications of ERW Pipe(Electric Resistance Welded Pipe):
1. Outside Diameter: Ф219-Φ660mm
2. Wall Thickness: 6-22mm
3. Length: 3-12m
4. Steel Grade: Q345B, API X42 - X80, L245, L555,J55, N80
5. Standard: SY/T5037-2000, GB/T9711.1-97, API Spec 5L
6. Test: hydro testing, ultrasonic detection, ultrasonic testing for pipe end, visual and dimension inspection, weighing and measuring, etc.
7. Packaging:Standard export seaworthy packing (or according to your request)

It is pipe produced by heating the steel plate edges to melt by high frequency electric current and form a seam under pressure of rolls without filler metal..

Three Main Characteristics of ERW Steel Pipes
★Lost cost: the low raw material cost and manufacturing cost makes its price more competitive than longitudinal seam submerged-arc welded pipes and seamless pipes.
★High Weld Seam Security: As a result of special welding method of melting the parent metal together without filler metal ,the weld property is better than submerged-are welded pipes; and the weld seam is much shorter than spiral seam welded pipes, the seam security is greatly improved.
★Wide Range: ERW pipes can be applied with a wide range of thickness/diameter ratio ,covering hundreds of specification.

ERW610 Line Manufacturing Process

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