1. Womic Steel: Manufacturing Capabilities & Company Strength
Womic Steel Group is a premier manufacturer and global exporter with over 20 years of expertise in producing carbon, alloy, and stainless steel tubular products. Our state-of-the-art SSAW pipe production facility spans a comprehensive manufacturing capability exceeding 15,000 tons per month for spiral submerged arc welded hollow sections, serving construction, structural, and marine projects worldwide.
Production Size Range for SSAW Hollow Section: Outside diameter from 219mm to 3,000mm (8 inch to 120 inch) for SSAW process. Wall thickness from 5.0mm to 25.4mm. Single lengths from 6m to 18m standard, with custom lengths up to 60m available for deep foundation and structural projects.
Quality Certifications & Regulatory Compliance:
ISO 9001:2015 Certified: Quality Management System for hollow section production and quality control processes.
CE Marking (PED 2014/68/EU): Our hollow sections comply with the European Pressure Equipment Directive (PED) 2014/68/EU. CE marking is available upon request. Declaration of Performance (DoP) provided for EN standard products.
FPC (Factory Production Control) per EN 10219: Self-declaration of conformity for CE marking.
EN 10204 3.2 Certification: In addition to standard 2.2 and 3.1 Mill Test Certificates, we supply products with Inspection Certificate 3.2, validated by EU-authorized third-party bodies.
Third-Party Inspection (TPI) Approvals: Our products and production processes are approved and audited by major international agencies including SGS, BV, TÜV, and DNV.
Global Recognition: Womic Steel is a trusted supplier to global EPC contractors, construction companies, and foundation contractors, serving over 80 countries worldwide.
2. EN 10219 S355JRH: Material Composition & Performance Characteristics
EN 10219 S355JRH is the European standard for cold-formed welded structural hollow sections. The "S" denotes structural steel, "355" indicates minimum yield strength of 355 MPa, "JR" indicates impact testing at 20°C (27 Joules minimum), and "H" denotes hollow section. S355JRH is widely used for structural applications requiring good strength, weldability, and low-temperature toughness.
EN 10219 S355JRH offers excellent weldability for field joining, good ductility for forming and bending, and guaranteed impact toughness for structural integrity. Compared to lower grades like S235JRH, S355JRH provides significantly higher load-bearing capacity, allowing for reduced section sizes and lighter structures.
Chemical Composition (Ladle Analysis, % by mass):
| Element | EN 10219 S355JRH (Max %) |
| C | 0.22 |
| Si | 0.55 |
| Mn | 1.60 |
| P | 0.035 |
| S | 0.035 |
| N | 0.014 |
| CE (max) | 0.45 |
Note: EN 10219 S355JRH has stringent limits on carbon, phosphorus, and sulfur, resulting in excellent weldability. The carbon equivalent (CEV) limit of 0.45% ensures good field weldability.
Mechanical Properties (Room Temperature):
| Property | EN 10219 S355JRH |
| Yield Strength (min) | 355 MPa (51,500 psi) |
| Tensile Strength (min) | 470 MPa (68,200 psi) |
| Elongation (min) | 19% (Longitudinal) |
| Impact Toughness | 27 Joules @ 20°C (JR) |
| Impact Toughness (J2H) | 27 Joules @ -20°C (optional) |
*Note: EN 10219 S355J2H is available for applications requiring low-temperature impact toughness at -20°C.*
Comparison of EN 10219 Hollow Section Grades:
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Impact Temperature | Typical Application |
| S235JRH | 235 | 360 | 20°C | Light structural applications |
| S275JRH | 275 | 410 | 20°C | Medium structural applications |
| S355JRH | 355 | 470 | 20°C | Heavy structural, piling |
| S355J2H | 355 | 470 | -20°C | Low-temperature structural piling |
Note: For the most demanding structural and piling applications, S355JRH or S355J2H is the recommended grade.
3. Dimensional Range & Standards Compliance
Womic Steel supplies EN 10219 S355JRH SSAW hollow sections across a wide dimensional spectrum, fully compliant with EN 10219 and related international standards.
| Item | Specification |
| Standard | EN 10219 (S235JRH, S275JRH, S355JRH, S355J2H) |
| Manufacturing Process | SSAW (Spiral Submerged Arc Welded) - 219mm-3,000mm OD |
| Outside Diameter Range | 219mm – 3,000mm (8" – 120") |
| Wall Thickness Range | 5.0mm – 25.4mm |
| Length Range | Standard: 6m, 12m, 18m / Custom: up to 60m |
| End Finish | Plain End (PE) / Beveled End (BE) |
| Surface Finish | Bare / Oiled / Black Coated / Primed / Galvanized |
| Tolerances | OD: ±1.0% / WT: ±10% (EN) / Length: +50mm -0mm |
4. Available Dimensions & Specifications - EN 10219 S355JRH SSAW Hollow Section
SSAW Hollow Section (219mm – 3,000mm OD)
| OD (mm) | Wall Thickness (mm) Options | Weight (kg/m) | Standard Length |
| 219 – 325 | 5.0, 6.0, 8.0, 10.0, 12.5 | 26.4 – 96.3 | 6m / 12m |
| 325 – 426 | 5.0, 6.0, 8.0, 10.0, 12.5, 14.0 | 39.5 – 142.2 | 6m / 12m |
| 426 – 530 | 6.0, 8.0, 10.0, 12.5, 14.0, 16.0 | 62.1 – 202.8 | 6m / 12m / 18m |
| 530 – 630 | 6.0, 8.0, 10.0, 12.5, 14.0, 16.0, 18.0 | 77.5 – 271.6 | 6m / 12m / 18m |
| 630 – 820 | 6.0, 8.0, 10.0, 12.5, 14.0, 16.0, 18.0, 20.0 | 92.3 – 394.6 | 6m / 12m / 18m |
| 820 – 1,020 | 8.0, 10.0, 12.5, 14.0, 16.0, 18.0, 20.0, 22.0 | 160.2 – 541.5 | 6m / 12m / 18m |
| 1,020 – 1,220 | 8.0, 10.0, 12.5, 14.0, 16.0, 18.0, 20.0, 22.0, 25.0 | 199.8 – 736.5 | 6m / 12m / 18m / 24m |
| 1,220 – 1,420 | 10.0, 12.5, 14.0, 16.0, 18.0, 20.0, 22.0, 25.0 | 298.4 – 859.8 | 6m / 12m / 18m / 24m |
| 1,420 – 1,620 | 10.0, 12.5, 14.0, 16.0, 18.0, 20.0, 22.0, 25.0 | 347.7 – 983.2 | 6m / 12m / 18m / 24m |
| 1,620 – 2,000 | 12.0, 14.0, 16.0, 18.0, 20.0, 22.0, 25.0 | 476.1 – 1,217.4 | 6m / 12m / 18m |
| 2,000 – 2,500 | 12.0, 14.0, 16.0, 18.0, 20.0, 22.0, 25.0 | 588.5 – 1,527.2 | 6m / 12m / 18m |
| 2,500 – 3,000 | 12.0, 14.0, 16.0, 18.0, 20.0, 22.0, 25.0 | 736.5 – 1,841.7 | 6m / 12m / 18m |
Note: Custom dimensions outside these ranges available upon request.
5. Common Structural Steel Standards Manufactured by Womic Steel
| Standard | Steel Grades | Typical Application |
| EN Hollow Section Standards | ||
| EN 10219 | S235JRH, S275JRH, S355JRH, S355J2H | Cold-formed welded structural hollow sections |
| EN 10248 | S235GP, S275GP, S355GP | Hot-rolled steel sheet piling and pipe piling |
| EN 10025 | S235JR, S275JR, S355JR, S355J2 | Hot-rolled structural steel |
| ASTM Structural Standards | ||
| ASTM A500 | GR.A, GR.B, GR.C | Cold-formed welded structural tubing |
| ASTM A252 | GR.1, GR.2, GR.3 | Steel pipe piles |
| ASTM A572 | GR.42, GR.50, GR.60, GR.65 | High-strength low-alloy structural steel |
| Other Standards | ||
| AS 1163 | C250, C350, C450 | Australian standard structural hollow sections |
| CSA G40.21 | 44W, 50W, 50A | Canadian standard structural steel |
Usage: Building structures, bridge supports, piling, marine foundations, offshore platforms, port construction, deep foundation engineering, industrial facilities, stadiums, exhibition halls
6. Manufacturing Process - SSAW (Spiral Submerged Arc Welded) Hollow Section
SSAW Manufacturing Process for Hollow Section (219mm – 3,000mm OD):
Raw Material Inspection (Coil): Incoming hot-rolled steel coils are verified for chemical composition, mechanical properties, and surface quality against EN 10219 S355JRH specifications. Each coil is assigned a unique heat number to ensure full material traceability throughout production.
Uncoiling & Leveling: Steel coils are loaded onto the uncoiler and fed through a precision leveling machine to flatten the strip, removing coil set and ensuring uniform flatness for consistent spiral forming.
Edge Milling & Trimming: Both longitudinal edges of the steel strip are milled and trimmed to precise width tolerance (±0.5mm). The edge preparation creates a clean, parallel surface essential for high-quality spiral weld formation.
Spiral Forming: The leveled strip is fed into a spiral forming machine at a controlled helix angle. The strip is continuously formed into a spiral cylindrical shape, with the edges aligned for welding.
Inner Submerged Arc Welding (SAW): The inner spiral seam is welded first using automatic submerged arc welding equipment with appropriate flux and wire combination.
Outer Submerged Arc Welding (SAW): The outer spiral seam is welded immediately after the inner weld, using automatic submerged arc welding equipment.
Cutting to Length: The continuous spiral welded pipe is cut to specified lengths using automatic plasma or oxygen cutting systems.
Non-Destructive Testing (NDT):
100% Ultrasonic Testing (UT): Automatic UT system inspects the entire spiral weld seam and full pipe body for laminations, inclusions, lack of fusion, and other discontinuities.
Radiographic Testing (RT): X-ray or gamma-ray inspection of weld seam (spot or full length as specified).
Magnetic Particle Inspection (MPI): Inspection of weld toes and heat-affected zone for surface cracks.
End Finishing: Plain ends (square cut) or beveled ends (30°-35° bevel angle) as per customer specification.
Final Inspection & Marking: Visual inspection for surface defects, dimensional verification, and permanent marking per EN 10219 (including grade, size, heat number, manufacturer identification).
Advantages of SSAW Process for Hollow Sections:
1. Ability to produce very large diameters from standard width coils
2. Continuous production process for high efficiency
3. Cost-effective for large diameter structural applications
4. Good dimensional stability and roundness
7. Quality Control & Testing Procedures for EN 10219 S355JRH SSAW Hollow Section
| Stage | Inspection Method | Purpose |
| Raw Material (Coil) | Chemical Analysis (OES Spectrometer) | Verify compliance with EN 10219 composition limits |
| Raw Material (Coil) | Tensile Testing | Verify yield strength, tensile strength, elongation |
| Raw Material (Coil) | Ultrasonic Testing | Detect internal laminations and defects |
| In-Process | Dimensional Inspection (Micrometers) | Monitor OD, WT during spiral forming |
| In-Process | Edge Preparation Inspection | Verify edge condition and alignment |
| Weld Zone | Ultrasonic Testing (UT) - On-Line | Detect weld discontinuities, lack of fusion |
| Weld Zone | Radiographic Testing (RT) | Verify weld penetration, porosity, slag inclusion |
| Weld Zone | Magnetic Particle Inspection (MPI) | Surface crack detection (weld and HAZ) |
| Finished Pipe | Dimensional Inspection | Verify OD, WT, length, straightness, roundness |
| Finished Pipe | Hydrostatic Testing (Optional) | Verify pressure integrity |
| Finished Pipe | Guided Bend Test | Verify weld ductility and soundness |
| Finished Pipe | Flattening Test | Verify ductility and soundness of pipe body |
| Finished Pipe | Charpy V-Notch Impact Test | Verify impact toughness (27J @ 20°C for JR) |
| Finished Pipe | Visual & Surface Inspection | Check for surface defects, laminations, cracks |
| Finished Pipe | Marking Verification | Ensure permanent marking per standard |
Quality Documentation:
1. Mill Test Certificate per EN 10204 Type 2.2, 3.1, or 3.2
2. Ultrasonic Test Report (weld and body)
3. Radiographic Test Report (if specified)
4. Dimensional Inspection Report
5. Traceability from heat number to finished pipe
6. Declaration of Performance (DoP) for CE marking
8. Primary Applications - EN 10219 S355JRH SSAW Hollow Section
EN 10219 S355JRH SSAW hollow sections are essential components in structural, construction, and piling applications:
Building Structures: Columns, beams, bracing members, and trusses for high-rise buildings, industrial facilities, warehouses, and commercial buildings.
Bridge Supports: Bridge piers, abutments, and structural supports for highway and railway bridges.
Piling & Deep Foundation: Load-bearing piles for building foundations, bridge foundations, and industrial facilities requiring deep foundation support.
Marine & Offshore Structures: Foundation piles for offshore platforms, port structures, wharves, and docks.
Stadiums & Exhibition Halls: Large-span structural members for stadium roofs, exhibition halls, and airport terminals.
Industrial Facilities: Structural supports for factories, power plants, refineries, and processing facilities.
Tower Structures: Support structures for communication towers, transmission towers, and wind turbines.
Mechanical & Equipment Supports: Structural supports for heavy machinery, equipment platforms, and industrial racks.
9. Packaging & Shipping - EN 10219 S355JRH SSAW Hollow Section
EN 10219 S355JRH SSAW hollow sections are packaged and shipped with utmost care to ensure their protection during transit.
Packaging:
Protective Coating: Before packaging, sections may be coated with anti-rust oil or primer. Bare finish also available.
Bundling (Small Diameters): For smaller diameter sections (typically below 610mm / 24"), sections are bundled together in hexagonal or rectangular bundles secured with steel straps.
Individual Stacking (Large Diameters): For larger diameter sections (above 610mm / 24"), sections are handled and shipped individually with wooden dunnage or rubber padding.
End Caps: Plastic or steel end caps protect beveled ends and plain ends.
Shipping:
Mode of Transportation: Sections are shipped via container vessels, bulk carriers, or rail freight.
Containerization (Small Diameters): For smaller diameter sections (below 508mm / 20"), sections are loaded into standard 20ft or 40ft shipping containers.
Bulk Vessel Loading (Large Diameters & Large Volumes): For large-volume orders, sections are loaded directly into bulk carriers.
Labeling and Documentation: Each bundle or individual section is clearly labeled with material grade, standard, dimensions, heat number, and handling instructions.
Customs Compliance: All necessary customs documentation is prepared.
Secure Fastening: Bundles and individual sections are securely fastened to prevent movement during transit.
In summary, Womic Steel ensures that all EN 10219 S355JRH SSAW hollow sections are packaged with industry-leading protective measures and shipped using reliable transportation methods.
10. Womic Steel Advantages & FAQ - EN 10219 S355JRH SSAW Hollow Section
Why Partner with Womic Steel for EN 10219 S355JRH SSAW Hollow Section?
Complete Range of Sizes: SSAW process covering 219mm to 3,000mm OD, wall thickness up to 25.4mm, lengths up to 60m.
CE Marking Available: Full compliance with EN 10219 requirements. CE marking and Declaration of Performance (DoP) provided.
European Standard Focus: Specialized experience in EN 10219 S355JRH structural applications for European and international projects.
Value-Added Services: End beveling, plain end cutting, protective coating (primer, galvanizing), and anti-corrosion wrapping.
Long Length Capability: Up to 60m single length for deep foundation and structural projects.
Competitive Logistics: Strategic partnership with global freight forwarders ensures cost-effective worldwide shipping.
Comprehensive Documentation: Full Mill Test Certificates (EN 10204 Type 2.2, 3.1, or 3.2), NDT reports, dimensional reports, and traceability documentation.
Choose Womic Steel Group as your reliable partner for high-quality EN 10219 S355JRH SSAW hollow sections for structural, construction, and piling projects worldwide. Welcome to inquire!
Website: www.womicsteel.com
Email: sales@womicsteel.com
Tel/WhatsApp/WeChat:
Victor: +86-15575100681
Jack: +86-18390957568
Frequently Asked Questions (FAQ) - EN 10219 S355JRH SSAW Hollow Section
Q: What is the difference between EN 10219 S355JRH and S355J2H?
A: S355JRH has guaranteed impact toughness of 27 Joules at 20°C, while S355J2H has guaranteed impact toughness of 27 Joules at -20°C. S355J2H is recommended for low-temperature applications and colder climates.
Q: Can S355JRH hollow sections be used for piling?
A: Yes. S355JRH offers 355 MPa minimum yield strength, making it suitable for piling applications. For marine piling, we also offer EN 10248 S355GP which is specifically designed for piling applications.
Q: What is the maximum single length for S355JRH SSAW hollow sections?
A: Standard lengths are 6m, 12m, and 18m. Custom lengths up to 60m are available depending on diameter and wall thickness.
Q: What surface finish options are available?
A: We offer bare (mill scale), oiled, primed, black coated, hot dip galvanized, and various anti-corrosion coatings (FBE, 3LPE).
Q: Can you supply hollow sections with third-party inspection?
A: Yes. We facilitate inspections by SGS, BV, TÜV, DNV, or any client-nominated representative.
Q: What documentation is provided with each shipment?
A: Mill Test Certificate (EN 10204 Type 3.1), Dimensional Inspection Report, UT Reports, RT Reports (if specified), Traceability Documentation, Packing List, Commercial Invoice, and Certificate of Origin. CE DoP available upon request.
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