No. P-202311130032

ERW Pipe

Supplier
Origin
China
Loading Country
China
HS Code
000000
MOQ
1 / MT
Incoterms
Negotiable
Lead Time
Negotiable

Product Image

Payment
T/T
Quantity
MT
Price
$ 100.00 - $ 200.00 / Unit



Steel manufacturing process in a factory, showing various stages of production for ERW (Electric Resistance Welding) pipes.


The definition of ERW welding

ERW steel pipes are manufactured by low-frequency or high-frequency resistance. It is a method of welding done by putting two surfaces in contact to face one another, then let high frequency current release either indirectly or directly, which later heats up by resistance heating between the two contact surfaces that is pressured to connect the two.


The principle of ERW welding

1) Skin Effect: the phenomenon where the current density is concentrated in the surface of conductor when there is electric current.
2) Proximity Effect: the phenomenon where the current distribution is gathered to the nearest area when the gap of two conductors is narrow with different direction of current flow in a pair of conductors.

Inside of a factory filled with machinery producing ERW steel pipes.


The characteristics and merits of ERW welding
1) High-efficiency / high-quality welding
2) High-speed welding, mass production
3) Possibility of welding for thin-wall pipe
4) Very narrow heat-affected zone for welding
5) Oxidized layer, Minimized transformation
6) Possibility to apply to various metal

A diagram with illustrations showing the process of making ERW steel pipes.

Various logos and names on a page regarding ERW steel pipes certifications.

Various logos and names on a page regarding ERW steel pipes certifications.

ItemERW Pipe
GradeSTKR400
Thickness1.4 ~ 7.0 mm
Length6,000 ~ 12,000 mm
OriginChina
Loading CountryChina
HS Code000000
IncotermsNegotiable
Lead TimeNegotiable
DepartmentMetal 2 team




SubjectContents
GradeSTKR400
Thickness(mm)1.4 ~ 7.0
Length(mm)6,000 ~ 12,000