Hebei Huayang Steel Pipe Co., Ltd is one of the most experienced manufacturers and suppliers of en10219 s235jrh cold formed hfw tube in China. Welcome to buy discount en10219 s235jrh cold formed hfw tube made in China here from our factory. Quality products and low price are available.
Product introduction
| Item | Description |
|---|---|
| Standard | EN 10219-1 (Technical delivery conditions) EN 10219-2 (Dimensions, tolerances, section properties) CE marking (CPR compliance) |
| Material Grade | S235JRH (UNI 1.0039) – Non-alloy structural steel for hollow sections |
| Manufacturing Process | Cold-formed, High-Frequency Welded (HFW) – Cold forming at room temperature; no post-forming heat treatment (weld seam may be as-welded or heat-treated) |
| Property | Requirement | Notes |
|---|---|---|
| Yield Strength (ReH) | ≥235 MPa (t ≤16 mm); ≥225 MPa (16 < t ≤40 mm) | 235 N/mm² typical for thin walls |
| Tensile Strength (Rm) | 360–510 MPa | Balanced strength and formability |
| Elongation (A) | ≥24% (t ≤40 mm) | Suitable for bending/welding |
| Charpy Impact | ≥27 J at +20°C (V-notch) | JR = Room-temperature toughness |
| Chemical Composition | C ≤0.17%, Mn ≤1.40%, P/S ≤0.040% | Optimized for HFW welding |
Core Advantages
✅ High Dimensional Accuracy: Tight tolerances for precision fabrication
✅ Superior Weldability: Low carbon equivalent for reliable field welding
✅ Cost-Effective: HFW production efficiency vs. seamless/ERW
✅ Corrosion Resistance: Suitable for hot-dip galvanizing (category A per ISO 14713-2)
✅ Batch Traceability: Full quality documentation (EN 10204 3.1/3.2)
About us
Hebei Huayang Steel Pipe Co., Ltd. was founded in 2005, with a registered capital of 500 million yuan. The company covers an area of more than 1,000 mu, with annual sales of 10 billion yuan, more than 600 employees and an annual productivity of 2.75 million tons. The company has 17 new automatic steel pipe production lines and 14 high-frequency production lines, with a diameter of 73-660 mm; Three double-sided submerged arc welded steel pipe production lines with diameters of 406.4-1422.4mm;; 24 hot tube expanding production lines, with a diameter of 230-820mm; Two anticorrosion steel pipe production lines with a diameter of 73-1626 mm; 2 automatic painting production lines. With 3 branches and 5 offices, the products are sold to various cities and exported to more than 80 countries such as Southeast Asia, Middle East, Europe and America.
Packaging, transportation and delivery
Through hexagonal bundling or circular bundling, it can be packed with plastic pipe caps and woven bags. Road, railway, sea, or container are the basic modes of transportation, and the delivery days are usually 30 days according to the standard and quantity.
Strict quality control
1. During and after the production, experienced quality inspectors randomly check the products to ensure that each steel pipe is qualified for production and application.
2. A nationally recognized laboratory with CNAS certification and certification by French Classification Society.
3. Have CNOOC access certificate, KOC oil company access network, ADNOC Abu Dhabi oil company access network, Petrobras access network, etc.
4. Accept the inspection by the third party designated/paid by the buyer, such as SGS and BV.
Certifications
API 2B
API 5L
GOST
ISO 9001
EN 10219
EN 10210
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