ERW Pipe

Baolai Group provide high quality control ERW Steel Pipe in ASTM, API, JIS, GOST, EN standard with API, JIS CE and ISO certifications. ERW (Electrical Resistance Welding) pipes are manufactured by cold forming of steel coil into a round cylindrical shape. The Out Diameter is from 1/2″-26″. ERW Pipes are usually for Construction, Oil and Gas, Water Pipeline, Heat-Supply, Piling and more.

The advantages of ERW pipe:
There are no fusion metals used during the manufacturing process. This means that the pipe is extremely strong and durable.
The weld seam cannot be seen or felt. This is a major difference when looking at the double submerged arc welding process, which creates an obvious welded bead that might need to be eliminated.
With the advances in high-frequency electric currents for welding, the process is far easier and safer.
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ERW Pipe Description

ERW steel pipes are manufactured by low-frequency or high-frequency resistance “resistance”. They are round pipes welded from steel plates with longitudinal welds. It is used to transport oil, natural gas and other vapor-liquid objects, and can meet various requirements of high and low pressure. At present, it occupies a pivotal position in the field of transportation pipes in the world.
During ERW pipe welding, heat is generated when current flows through the contact surface of the welding area. It heats the two edges of the steel to the point where one edge can form a bond. At the same time, under the action of the combined pressure, the edges of the tube blank melt and squeeze together.

Typically the maximum outside diameter of ERW tubing is 24″, and as a specialty manufacturer, baolai can go up to 26″.

For larger sizes the tubes will be made in SAW, feel free to contact us for a quote.

ERW Pipe Applications and Advantages


Mostly used for transporting water, oil, natural gas, etc.
It is also used in oil and gas fields, automotive industry, etc.


High efficiency, low cost,
material saving, easy to automate.

Services we offer

Water Cutting

Water jet technology, also known as water jet and water cutting technology, is a real cold cutting. speed jet water cutting.


We can apply any type of Bevel to any degree desired. Beveling can be applied to the surface of pipes of any size or diameter.


Pipe thread is a thread located on the pipe wall for connection, mainly used for the sealing connection of water, gas, oil and other pipelines. We offer NPT* and BSPT* pipe threads.