A state-of-the-art production line designed for precision manufacturing of steel tubes and pipes with exceptional speed, efficiency, and quality. Built with advanced forming technology and robust mechanical structure, delivering outstanding performance across a wide range of pipe diameters and wall thicknesses.
More than 100 lines delivered to Youfa Group — with an annual production capacity exceeding 20 million tons.
(MM) Max Section Size
Models
Lines To Youfa Group
ERW Expertise
A state-of-the-art production line designed for precision manufacturing of steel tubes and pipes with exceptional speed, efficiency, and quality. Built with advanced forming technology and robust mechanical structure, delivering outstanding performance across a wide range of pipe diameters and wall thicknesses.
Trusted by the world's largest ERW tube manufacturer.
More than 100 lines delivered to Youfa Group — with an annual production capacity exceeding 20 million tons.
(mm) Max section size
MODELS
Lines to Youfa Group
ERW Expertise
The high speed ERW (electric resistance welding) tube mill continuously converts flat steel strip coil into finished tube and pipe through roll forming and high-frequency welding — no filler material required. Eleven standard models cover every production need from compact thin-wall precision tube to large-diameter pressure pipe.








── Introduction
The High Speed ERW (Electric Resistance Welding) Tube Mill continuously converts flat steel strip coil into finished tube and pipe through roll forming and high-frequency welding — no filler material required. Eleven standard models cover every production need from compact thin-wall precision tube to large-diameter pressure pipe.

ERW25 to ERW760 — one proven platform scaling from Ø8 mm thin-wall tube to Ø760 mm pressure pipe.
Strip edges fused by resistive heating — narrow, high-integrity weld seam at speed, no consumables.
Advanced aperture technology and British Eurasia digital speed regulation keep output stable and consistent.
Strip joining and accumulator allow uninterrupted production during coil changes — maximum line uptime.
Strip edges fused by resistive heating — narrow, high-integrity weld seam at speed, no consumables.
Advanced aperture technology and British Eurasia digital speed regulation keep output stable and consistent.
Strip joining and accumulator allow uninterrupted production during coil changes — maximum line uptime.
ERW32 to ERW630 — one proven platform scaling from Ø8 mm thin-wall tube to Ø630 mm pressure pipe.
Produces round, square, and rectangular hollow sections in carbon steel (mild and high-strength), with stainless and galvanised strip options available. Serves construction, energy, automotive, and industrial sectors worldwide.
Square and rectangular sections for construction frames, bridges, and heavy equipment.
Petroleum, natural gas, and water transmission pipe with inline hydrostatic testing and ultrasonic inspection.
Cut-to-length lines produce flat sheet blanks to specified dimensions for stamping, deep drawing, and press operations.
Thin-wall tube for steel furniture frames, shop fittings, and display fixtures (ERW32–ERW38).
Medium-bore sections for construction scaffolding, perimeter fencing, and handrail systems.
General-purpose mechanical tubing for machinery, equipment components, and industrial assemblies.
Functions
Produces round, square, and rectangular hollow sections in carbon steel (mild and high-strength), with stainless and galvanised strip options available. Serves construction, energy, automotive, and industrial sectors worldwide.
Square and rectangular sections for construction frames, bridges, and heavy equipment.
Petroleum, natural gas, and water transmission pipe with inline hydrostatic testing and ultrasonic inspection.
Cut-to-length lines produce flat sheet blanks to specified dimensions for stamping, deep drawing, and press operations.
Thin-wall tube for steel furniture frames, shop fittings, and display fixtures (ERW32–ERW38).
Medium-bore sections for construction scaffolding, perimeter fencing, and handrail systems.
General-purpose mechanical tubing for machinery, equipment components, and industrial assemblies.
Two configurations by diameter. Small and medium bore models follow a streamlined 12-step flow. Large bore models extend the line with a seam annealer and mandatory pressure-service quality inspection.
Note: ERW32 includes a double-dump run-out conveyor for compact tube handling. Accumulation loop allows uninterrupted running during coil changes.















Process Flow
Two configurations by diameter. Small and medium bore models follow a streamlined 12-step flow. Large bore models extend the line with a seam annealer and mandatory pressure-service quality inspection.
Note: ERW32 includes a double-dump run-out conveyor for compact tube handling. Accumulation loop allows uninterrupted running during coil changes.
Note: Seam annealer relieves weld-zone residual stress for pressure-service compliance. Hydrostatic testing and ultrasonic inspection are mandatory before packing.
── Technical Specifications
Wall thickness for ERW168–ERW630 varies by strip width and material grade - contact us for project-specific data.
| Model | Tier | O.D. Range | Wall Thickness | Process | Key Applications |
|---|---|---|---|---|---|
| ERW25 | Small bore | Ø 8.0–25.0 mm | 0.4–1.5 mm | Standard | Furniture, precision thin-wall tube |
| ERW38 | Small bore | Ø 10.0–38.1 mm | 0.6–2.0 mm | Standard | Furniture, handrail, automotive trim |
| ERW60 | Small bore | Ø 12.7–63.5 mm | 0.8–3.2 mm | Standard | Scaffolding, fencing, mechanical section |
| ERW89 | Medium bore | Ø 25.4–88.9 mm | 1.0–4.0 mm | Standard | Structural tube, construction frame |
| ERW114 | Medium bore | Ø 48–114.0 mm | 1.5–5.0 mm | Standard | Structural section, water service pipe |
| ERW168 | Medium bore | Up to Ø 168.0 mm | Med–heavy gauge | Full QA | Oil & gas pipeline, water main |
| ERW219 | Large bore | Up to Ø 219.0 mm | Med–heavy gauge | Full QA | Natural gas, city gas network |
| ERW325 | Large bore | Up to Ø 325 mm | Heavy gauge | Full QA | Pressure pipeline, chemical industry |
| ERW426 | Large bore | Up to Ø 426.0 mm | heavy gauge | Full QA | Pressure pipeline, chemical industry |
| ERW508 | Large bore | Up to Ø 508.0 mm | heavy gauge | Full QA | Petroleum & water transmission |
| ERW630 | Large bore | Up to Ø 630 mm | Heavy gauge | Full QA | Large-diameter infrastructure pipe |
| ERW760 | Large bore | Up to Ø 760.0 mm | heavy gauge | Full QA | Large-diameter infrastructure, piling |
* Wall thickness ranges and line speed vary by model and material grade. Contact Forever Machinery for project-specific parameters.
Full production line documentation across all 12 high-speed models — from ERW25 to ERW760. Every machine, every detail. Tap any image to view full size.

⌀ 8.0–25.0 mm • WT 0.4–1.5 mm

⌀ 10.0–38.1 mm • WT 0.6–2.0 mm

⌀ 12.7–63.5 mm • WT 0.8–3.2 mm

⌀ 25.4–88.9 mm • WT 1.0–4.0 mm

⌀ 48–114 mm • WT 1.5–5.0 mm

Up to ⌀ 168 mm • Full QA line

Up to ⌀ 219 mm • Full QA line

Up to ⌀ 325 mm • Full QA line

Up to ⌀ 426 mm • Full QA line

Up to ⌀ 508 mm • Full QA line

Up to ⌀ 630 mm • Full QA line

Up to ⌀ 760 mm • Full QA line

We pride ourselves in our 30 years' experience in roll form engineering and ERW tube mill design. We look after our customers every step of the way throughout the entire manufacturing lifecycle and offer our insights & services on optimizing their equipment.
Strict adherence to global quality management systems.
Decades of proven engineering and industrial innovation.
Reliably delivering heavy machinery solutions worldwide.
Machine Gallery
Production-line images for all 11 High Speed ERW Tube Mill models.