API 5L Coated Pipe

"ERW Pipes Are More Expensive Than Seamless Pipes"

This myth ignores the efficiency of ERW production. To answer "what is erw pipe" from an economic perspective: ERW pipes are made from steel strips, with no billet piercing (required for seamless pipes), reducing material waste by 30% and production time by 50%.

The cost difference is significant. At Huayang, a 273mm diameter, 8mm wall electric resistance welded steel pipe costs $850/ton, while a seamless pipe of the same spec is $1,200/ton-a 30% savings. For large projects like the Guangxi Pingnan Third Bridge, which used 5,000 tons of our hfw steel pipe, this translated to $1.75 million in cost reductions. Even with advanced HFW technology, our hfw steel pipe remains 20% cheaper than seamless pipes, making it the economical choice for bulk orders.

"ERW Pipes Have Limited Sizes and Customization"

Early ERW lines were restricted to small diameters, but modern equipment has expanded capabilities. This myth often leads clients to overlook ERW for large or specialized projects-unnecessarily.

Hebei Huayang's production lines cover a wide range: our 14 HFW lines produce hfw steel pipe from Φ73mm to Φ660.4mm, and 3 ERW lines handle up to Φ1422.4mm for port piling projects. Customization is our strength too. For a European industrial client, we manufactured electric resistance welded steel pipe with a non-standard 12mm wall and square cross-section, using erw technology to ensure uniform welds. We also adjust steel grades (from Q235 to Q355) and coatings based on client needs-proving ERW pipes are versatile, not limited.