Today, ADTO GROUP will discuss the key difference between Seamless Steel Pipe and ERW Stainless Steel Pipe.

What is the Raw material required for manufacturing Seamless Steel Pipe & ERW Stainless steel Pipes?

Seamless Steel Pipe is made from a solid round steel ’billet’ which is heated and pushed or pulled over a form until the steel is shaped into a hollow tube.

To Manufacture ERW Stainless Steel Pipes HR Coils are required.

What is the Difference Between Seamless Steel Pipe and ERW Stainless Steel Pipes?

Electric Resistance Welding (ERW) pipe is manufactured by rolling metal and then welding it longitudinally across its length. Seamless pipe is manufactured by extruding the metal to the desired length; therefore ERW pipe has a welded joint in its cross-section, while seamless pipe does not have any joint in its cross-section through-out its length.

In Seamless pipe, there are no welding or joints and is manufactured from solid round billets. The seamless pipe is finished to dimensional and wall thickness specifications in sizes from 1/8 inch to 26 inch OD. Applicable in for High-pressure applications such as Hydrocarbon Industries & Refineries, Oil & Gas Exploration & Drilling, Oil & Gas Transportation, and Air and Hydraulic cylinders, Bearings, Boilers, Automobiles.etc.

ERW (Electric Resistance Welded) pipes are welded longitudinally, manufactured from Strip / Coil and can be manufactured up to 24” OD. ERW pipe cold formed from a ribbon of steel pulled through a series of rollers and formed into a tube which is fused through an electric charge. It is mainly used for low/ medium pressure applications such as transportation of water/oil. ADTO GROUP is one of the leading ERW Stainless Steel Pipes Manufacturer and exporter based in China. Contact us for product details.

Common sizes for ERW Steel Pipe range from 2 3/8 inch OD to 24 inch OD in a variety of lengths to over 100 feet. Surface finishes are available in bare and coated formats and processing can be handled on-site to customer specifications.

What Technologies are Used to Manufacture Seamless Steel Pipe & ERW Steel Pipes?

Technologies for Production of Seamless Steel Pipe & ERW Steel Pipes “CPE” Technology used for Seamless Pipes & Tubes Production up to 7-inches OD is the world-renowned Technology. “Plug Mill” Technology used for Higher Dia. Seamless Pipes & Tubes Production from 7-inches to 14-inches, is the most reliable technology, in higher dia. Segment. High-frequency Induction Welding Technology is used for ERW Pipes &Tubes up to 21-inches OD.

How to Identify Seamless Steel Pipe or ERW Stainless Steel pipes?

To identify that a pipe supplied is seamless or ERW, Simply read the stencil on the side of the pipe

If it is ASTM A53, Type S means seamless.

Type F is furnace but welded,

Type E is Electrical to resist welded.

That’s how. It is the easiest way to identify whether the pipe is seamless or ERW.

ADTO GROUP is one of the leading manufacturers and exporters of ERW Stainless Steel pipes from China. We manufacture ERW steel pipes in various dimensions and shapes. We are also one of the largest Stainless Steel pipes exporter in China. Contact us for more information about our ERW stainless Steel pipes.