Hebei Huayang Steel Pipe Co., Ltd is one of the most experienced manufacturers and suppliers of black erw hfw carbon steel pipe 76-660mm en10219 standard manufacturer in China. Welcome to buy discount black erw hfw carbon steel pipe 76-660mm en10219 standard manufacturer made in China here from our factory. Quality products and low price are available.
Product introduction
Product Description
Black ERW HFW Carbon Steel Pipe 76-660mm EN10219 Standard is a high-frequency straight seam welded structural steel pipe strictly manufactured in accordance with European standard EN10219, specially designed for European standard construction structures, building scaffolding, greenhouse frames, municipal engineering supports and mechanical structural projects. Covering a complete outer diameter range of 76mm to 660mm, this black uncoated carbon steel pipe adopts mainstream S235JR, S275JR non-alloy structural steel grades, fully complying with EU structural steel pipe technical specifications and acceptance standards.
Adopting advanced fully automatic HFW high-frequency electric resistance welding technology, the pipe body achieves integrated metallurgical fusion at the welding seam without pores, slag inclusions or microcracks. Equipped with online internal and external weld burr removal and professional weld stress relief treatment, the product features uniform wall thickness, high roundness and ultra-smooth inner and outer walls. All finished pipes pass mandatory flattening test, cold bending test and full weld non-destructive inspection, with stable mechanical strength and excellent structural bearing capacity. Supplied in original black steel finish with anti-rust oil protection, the pipe retains complete structural performance without painting or galvanizing treatment, featuring high cost performance and easy secondary processing. As a professional EN10219 standard pipe manufacturer, we provide full-size customized processing and stable bulk supply for European and global structural engineering projects.
1. Basic Product Specifications
Product Name: Black ERW HFW Carbon Steel Pipe 76-660mm EN10219 Standard
Executive Standard: EN10219-1, EN10219-2 (European Cold Formed Welded Structural Steel Tubes)
Outer Diameter Range: 76mm ~ 660mm full complete European standard structural sizes
Conventional Wall Thickness: 2.0mm – 20mm, customized thick & thin wall specifications available
Steel Grades: S235JR (mainstream), S275JR, S355JR European standard non-alloy carbon steel
Production Process: HFW high-frequency ERW straight seam welding, online internal & external burr removal, weld stress relief heat treatment
Standard Length: 6m / 9m / 12m; custom fixed length within 12m supported
Product Finish: Black original steel surface, anti-rust oil treatment, no paint / no galvanization
Applicable Scenarios: European standard building scaffolding, steel structure frames, agricultural greenhouses, municipal support structures, mechanical equipment brackets, temporary engineering supports
Service Characteristics: Static structural load-bearing, non-pressure structural use, easy cutting, welding and bending processing
Pipe End Treatment: Burr-free flat cut ends, plastic anti-collision protective end caps
Customizable Treatment: Hot dip galvanized, spray anti-rust paint, beveled ends, grooved ends on request
Core Features: EN10219 EU standard compliance, full 76–660mm size series, black raw steel finish, high-precision HFW weld, excellent structural toughness, easy processing, factory direct manufacturer supply, cost-effective bulk procurement
2. Core Product Advantages
2.1 Strict EN10219 European Standard Compliance
Manufactured and inspected fully in accordance with EN10219-1 and EN10219-2 European structural pipe standards, adopting EU standard S235JR/S275JR/S355JR steel grades. The product meets European construction safety specifications, with standardized dimensional tolerance, mechanical properties and weld quality, fully adaptable to local project acceptance standards in Europe, Middle East and other regions that adopt EU standard systems.
2.2 Full 76–660mm Complete Size Coverage
Covers all mainstream medium and large diameter structural pipe specifications required for European standard engineering projects. Supports one-stop centralized procurement of all calibers, matching EN standard pipe fittings, connectors and scaffolding accessories. It effectively simplifies the procurement process, reduces multi-supplier communication and logistics costs, and shortens the project construction cycle for bulk engineering orders.
2.3 High-Integrity HFW Welding, Stable Structural Performance
Adopting flux-free high-frequency resistance welding technology, the welding seam forms integrated metallurgical fusion with the pipe base metal, with consistent strength between weld and pipe body. Online stress relief heat treatment eliminates welding residual stress, avoiding weld cracking and structural deformation during long-term load-bearing use. 100% full weld non-destructive inspection ensures zero welding defects, guaranteeing the overall structural safety of scaffolding and steel frame projects.
2.4 Premium European Standard Carbon Steel Material
S235JR, S275JR and S355JR European standard non-alloy structural steel features low impurity content, uniform internal microstructure, excellent plasticity, toughness and cold bending performance. It has no brittle fracture at room temperature, supports on-site cutting, drilling, welding and bending processing, and perfectly adapts to complex outdoor and seasonal temperature change environments of European construction projects.
2.5 Black Original Steel Finish, High Cost Performance
The black steel pipe retains the original hot-rolled steel surface with anti-rust oil protection, avoiding the cost premium of galvanizing and painting processes. The surface is flat and clean without oxide peeling, convenient for secondary processing such as welding and painting on site. It is the most cost-effective choice for temporary structures, indoor supports and short-to-medium term outdoor structural projects.
2.6 High Dimensional Precision & Good Assembly Compatibility
Precision rolling and sizing process strictly controls outer diameter, wall thickness and straightness tolerance within EN10219 standard range. The inner and outer walls are smooth and burr-free, with flat and neat cutting ends. It is highly compatible with European standard scaffolding couplers, structural connectors and flange accessories, reducing on-site secondary processing procedures and greatly improving construction assembly efficiency.
3. Dimensional Tolerance Standard (EN10219)
|
Inspection Item |
Standard Tolerance |
|
Outer Diameter (76mm–168mm) |
±0.8% nominal OD |
|
Outer Diameter (168mm–660mm) |
±1.0% nominal OD |
|
Wall Thickness |
±10% of nominal thickness |
|
Pipe Straightness |
≤1.5mm per meter |
|
Out-of-Roundness |
≤1.0% of outer diameter |
|
Cutting Length |
+100mm / −0mm |
4. Mechanical & Chemical Properties (EN10219)
4.1 Mechanical Properties
|
Steel Grade |
Min. Yield Strength |
Tensile Strength |
Min. Elongation |
Factory Test Items |
|
S235JR |
≥235MPa |
360–510MPa |
≥26% |
Flattening test, 180° cold bending test, weld NDT inspection |
|
S275JR |
≥275MPa |
410–560MPa |
≥24% |
Flattening test, cold bending test, full weld inspection |
|
S355JR |
≥355MPa |
470–630MPa |
≥22% |
Flattening test, impact test, weld ultrasonic inspection |
4.2 Chemical Composition (Max Mass %)
|
Grade |
C Max |
Si Max |
Mn Max |
P Max |
S Max |
|
S235JR |
0.17 |
0.35 |
1.40 |
0.045 |
0.045 |
|
S275JR |
0.21 |
0.35 |
1.50 |
0.045 |
0.045 |
|
S355JR |
0.24 |
0.55 |
1.60 |
0.040 |
0.040 |
Note: All pipes pass 180° cold bending test without cracks, fully comply with EN10219 structural steel tube mandatory testing standards, suitable for European standard structural engineering safety requirements.
5. Manufacturing Process
Raw Material Inspection: Adopt qualified EN standard S235JR/S275JR/S355JR hot rolled steel coils, strictly test chemical composition and mechanical properties to meet EN10219 requirements.
Slitting & Edge Finishing: Precision slitting according to pipe specifications, remove edge oxide and burrs to ensure uniform welding gap.
Multi-Roll Continuous Forming: Gradual rolling molding to ensure uniform roundness, consistent wall thickness and smooth pipe surface.
HFW High-Frequency Welding: Automatic closed-loop parameter control to realize full penetration and high-strength metallurgical welding.
Internal & External Burr Removal: Online mechanical scarving to remove welding flash, ensuring smooth inner and outer pipe walls.
Weld Stress Relief Treatment: Eliminate welding residual stress, improve weld toughness and structural stability.
Sizing & Straightening: Precision sizing and straightening to control all dimensional indicators within EN10219 tolerance range.
Fixed-Length Cutting: Neat burr-free fixed-length cutting according to customer customized requirements.
EN Standard Performance Inspection: Weld non-destructive testing, flattening test, cold bending test and full dimensional re-inspection.
Anti-Rust Treatment & Marking: Uniform black anti-rust oil coating; laser permanent marking of EN standard, steel grade, size and batch number.
Export Standard Packaging: Waterproof PE wrapping, high-strength steel strip bundling, plastic end caps for long-distance sea and land transportation.
6. Main Application Scope
European Standard Construction Engineering: Building scaffolding frames, structural support pipes, formwork support systems, temporary construction platforms
Agricultural & Horticultural Engineering: European standard agricultural greenhouses, flower planting greenhouses, farm breeding shed support frames
Municipal & Traffic Engineering: Road safety guardrails, municipal landscape supports, bridge auxiliary structures, public facility brackets
Mechanical Manufacturing: Mechanical equipment chassis, support brackets, conveyor frames, engineering machinery structural parts
Steel Structure Projects: Small factory steel frames, warehouse support structures, building secondary steel structures
Global EU Standard EPC Projects: Overseas engineering projects requiring EN10219 standard structural steel pipes
7. Quality Inspection & Manufacturer Certification
Fully compliant with EN10219-1 / EN10219-2 European structural steel tube standards
ISO 9001 certified factory production line, professional EN standard pipe manufacturer
100% weld non-destructive inspection + EN standard flattening & cold bending mechanical tests
Complete Mill Test Report (MTR) and factory certification documents provided for each batch
Support SGS, BV third-party sampling inspection and EU standard project acceptance
Full batch traceability system from raw materials to finished product delivery
8. Packaging & Delivery
Packaging: Black steel pipes coated with anti-rust oil, wrapped with waterproof PE film, bundled with high-strength steel strips, plastic anti-collision end caps at both ends.
Product Marking: Laser permanent marking including EN10219 standard, steel grade, OD×WT, batch number and production date.
Trade Terms: FOB, CIF, CFR, DAP global sea and land delivery
Shipping Ports: Tianjin, Qingdao, Shanghai, Ningbo
Customization Service: Custom fixed length, hot dip galvanized/painted finish, special pipe end processing
Delivery Cycle: Conventional stock sizes 3–7 working days; customized processed pipes 7–15 working days
9. Why Choose Our EN10219 Black HFW Steel Pipe
Professional EN10219 standard manufacturer, full compliance with European structural pipe technical specifications
Complete 76–660mm full size series, one-stop solution for EU standard structural pipe procurement
Multiple S235JR/S275JR/S355JR steel grades to match different load-bearing project requirements
High-quality HFW welding process, defect-free weld and stable long-term structural safety
Black original steel finish with low cost, easy for secondary processing and on-site construction
Factory direct supply, stable bulk production capacity and competitive ex-factory price
Contact Us
For factory quotations, detailed EN10219 technical data sheets, bulk order discounts and delivery schedules ofBlack ERW HFW Carbon Steel Pipe 76-660mm EN10219 Standard, please contact our professional global sales team. As a reliable EN standard steel pipe manufacturer, we provide high-quality HFW welded structural pipes and one-stop customized solutions for global EU standard construction, municipal and mechanical engineering projects.
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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
Packaging, transportation and delivery
At Hebei Huayang Steel Pipe Co., Ltd., we apply standardized and reliable packaging solutions for all our steel pipe products. Our pipes can be securely packed by hexagonal bundling or circular bundling according to product diameter, wall thickness and customer requirements. Each pipe end is protected with high‑strength plastic pipe caps to avoid collision damage, dust and moisture during transportation and storage. The whole bundle is firmly wrapped with durable woven bags to enhance stability and prevent scratches or deformation.
We support a complete range of transportation methods to satisfy global customers, including road transportation, railway transportation, sea freight and container shipping. Based on our strategic location in Cangzhou, Hebei Province, we enjoy convenient access to major ports such as Tianjin Port, which greatly improves logistics efficiency and reduces transportation costs.
For standard specifications and normal order quantities, the general delivery time is about 30 days after order confirmation and deposit receipt. For large‑scale orders, special sizes or customized processing requirements, our production and sales team will formulate a detailed production plan and provide an accurate delivery schedule accordingly to ensure on‑time supply and stable performance for projects and clients worldwide.
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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