ERW pipes are formed by forming a hot-rolled coil through a forming machine. The skin effect and proximity effect of high-frequency current are used to heat and melt the edge of the pipe blank. Pressure welding is carried out under the action of a squeeze roller. Welded steel pipes have a simple production process, high production efficiency, many varieties and specifications, and less equipment, but their general strength is lower than seamless steel pipes.
| Process Technique | Electric Resistance Welded, Welded |
|---|---|
| Size | 1/2" – 26", 21.3MM-660MM, DN 15- DN 650 |
| Thickness | 1mm – 20mm |
| Length | 11.8m, 12m, 5.8m, 6m, others |
| Standard | API, ASTM |
| Grade | A523, API 5L, ASTM A53 |
Electric Resistance Welded (ERW) pipe is a type of steel tubing created through a high-frequency induction welding process. The manufacturing process involves cold-forming a steel strip into a cylindrical shape and then passing an electric current between the two edges. This current heats the steel to a point where the edges fuse under pressure, creating a strong and uniform bond without the need for filler materials.
Pipe Ends: beveled, straight cut, saw cut, and torch cut
Surface: Lightly oiled, Hot dip galvanized, Electro galvanized, Black Coating, Bare, Varnish coating/Anti rust oil, Protective Coatings (Coal Tar Epoxy, Fusion Bond Epoxy, 3-layers PE)
Packing: Plastic plugs in both ends, Hexagonal bundles of max. 2,000kg with several steel strips, Two tags on each bundle, Wrapped in waterproof paper, PVC sleeve, and sackcloth with several steel strips, Plastic caps.
Test: Chemical Component Analysis, Mechanical Properties (Ultimate tensile strength, Yield strength, Elongation), Technical Properties (Flattening Test, Bending Test, Hardness Test, Impact Test), Exterior Size Inspection, Hydrostatic Test, NDT TEST ( ET TEST, RT TEST, UT TEST)
Certificates: API 5L-0640, GB/T 28001-2011 idt OHSAS 18001:2007, GB/T 19001-2016/ISO 9001:2015, gb/t 24001-2016/iso 14001:2015
ERW pipes are the best ideal for several industries.
The ERW steel pipe is often present in oil and gas extraction sites, used for transporting oil, gas.
Additionally, their resistance to corrosion makes them last longer, enabling oil and gas companies to reduce maintenance costs.
Water supply systems favor ERW pipes, especially in those handling and transporting water and other potentially corrosive elements. The smooth interior of the pipes also helps in managing water flow, running smoothly, and minimizing friction and pressure drops.
ERW steel pipes as structural support in buildings, bridges, and other infrastructure projects. Their high strength allows them to withstand heavy loads, making them ideal for use in columns, beams, and trusses on construction sites.
Power plants, both thermal and nuclear, use ERW pipes to transport coolant fluids, such as water or steam within the plant.
In nuclear plants, these pipes are used as casing or containment for fuel rods, serving as a barrier.
On the other hand, these pipes are used in thermal power plants to cool systems and steam lines.
Exceptional Strength and Durability: Our ERW tubes are manufactured from high-quality steel, making them robust and resistant to corrosion and harsh environments. This ensures a long service life and reliable performance.
Cost-Effective Production: The efficient ERW manufacturing process allows for high-volume production at a lower cost compared to seamless tubing, making it an economical choice for your projects.
Superior Surface Finish: ERW tubes feature a smooth and clean interior and exterior surface. This enhances aesthetic appeal for architectural applications and is crucial for efficient fluid and gas flow.
High Dimensional Accuracy: The precision-controlled welding process results in uniform wall thickness and consistent dimensions, minimizing defects and ensuring reliability.
Versatility in Application: Available in a wide range of sizes and shapes, including round, square, and rectangular, our ERW tubes are highly adaptable to various project requirements.
At JS Steel Pipe Company, we leverage our own state-of-the-art ERW mills to produce tubing that meets the highest quality standards. Our commitment to innovation and precision manufacturing ensures that every tube we deliver not only meets but exceeds performance expectations. We provide durable, reliable, and cost-effective solutions tailored to the diverse needs of our clients.
For superior ERW pipes, trust JS Steel Pipe– your premier supplier in China.
Our commitment to quality ensures dependable performance in your piping systems.
Explore our range of products or contact us today to acquire top-grade ERW steel pipes for your projects.
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common size of steel pipes are in stock more than 800 tons, CIF orders will book stand-on vessel first.
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