Xi'an Dongmeng Group Co., Ltd. is one of the most reliable manufacturers and suppliers of S355J2H Steel Pipe Supplier | EN 10219 S355J2H Structural Hollow Sections Manufacturer & Exporter in China, also supports customized service. With abundant experience, we warmly welcome you to wholesale cheap products in stock here and get free sample from our factory. For price consultation, contact us.
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S355J2H is a low-carbon manganese steel alloy known for its medium tensile strength, excellent weldability, and superior impact resistance-even in sub-zero temperatures. As a grade under the EN 10210 standard, the "J2" designation indicates certified impact performance at -20°C, while the "H" identifies it as a hollow section product, such as pipes and structural tubes. The "S" stands for structural steel, making EN 10219 S355J2H seamless pipes ideal for construction and industrial applications.
Enhanced with manganese, this carbon steel grade offers improved hardness and durability. With thicker walls compared to standard pipes, S355J2H hollow sections provide exceptional strength and reliability. Choose EN 10219 S355J2H hot finished circular hollow sections (CHS) for robust and long-lasting performance in demanding environments.
Ideal for B2B buyers seeking high-quality S355J2H pipe suppliers, distributors, and manufacturers-this grade is a top choice for structural projects requiring certified materials, excellent mechanical properties, and reliable low-temperature performance.
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S355J2H Steel Pipe Overview
S355J2H Steel Pipe is a high-strength structural hollow section manufactured according to EN 10219 standards. It is widely used in steel structures, bridges, industrial plants, stadiums, offshore facilities, transmission towers, and mechanical engineering projects where high load-bearing capacity and reliable weldability are required.
The designation:
S = Structural Steel
355 = Minimum Yield Strength 355 MPa
J2 = Impact Energy 27 Joules at -20°C
H = Hollow Section
Compared with conventional structural steel grades, S355J2H hollow sections provide superior strength-to-weight ratio, enabling engineers to reduce structural weight while maintaining design safety.
DIMENSIONS AND SIZES OF EN10219 S355J2H PIPE
| DN | O. D. | W. T. | |||||||||||||||
| Inch | mm | SCH5S | SCH10S | SCH10 | SCH20 | SCH30 | SCH40 | SCH60 | SCH80 | SCH100 | SCH120 | SCH140 | SCH160 | STD | XS | XXS | |
| 50 | 2″ | 60.3 | 1.65 | 2.77 | – | – | – | 3.91 | – | 5.54 | – | – | – | 8.74 | 3.91 | 5.54 | 11.07 |
| 65 | 2 1/2″ | 73 | 2.11 | 3.05 | – | – | – | 5.16 | – | 7.01 | – | – | – | 9.53 | 5.16 | 7.01 | 14.02 |
| 80 | 3″ | 88.9 | 2.11 | 3.05 | – | – | – | 5.49 | – | 7.62 | – | – | – | 11.13 | 5.49 | 7.52 | 15.24 |
| 90 | 3 1/2″ | 101.6 | 2.11 | 3.05 | – | – | – | 5.74 | – | 8.08 | – | – | – | – | 5.74 | 8.08 | – |
| 100 | 4″ | 114.3 | 2.11 | 3.05 | – | – | – | 6.02 | – | 8.58 | – | 11.13 | – | 13.49 | 6.02 | 8.56 | 17.12 |
| 125 | 5″ | 141.3 | 2.77 | 3.4 | – | – | – | 6.55 | – | 9.53 | – | 12.7 | – | 15.88 | 6.55 | 9.53 | 18.05 |
| 150 | 6″ | 168.3 | 2.77 | 3.4 | – | – | – | 7.11 | – | 10.97 | – | 14.27 | – | 18.26 | 7.11 | 10.97 | 21.95 |
| 200 | 8″ | 219.1 | 2.77 | 3.76 | – | 6.35 | 7.04 | 8.18 | 10.31 | 12.7 | 15.09 | 18.26 | 20.62 | 23.01 | 8.18 | 12.7 | 22.23 |
| 250 | 10″ | 273.1 | 3.4 | 4.19 | – | 6.35 | 7.8 | 9.27 | 12.7 | 15.09 | 18.26 | 21.44 | 25.4 | 28.58 | 9.27 | 12.7 | 25.4 |
| 300 | 12″ | 323.9 | 3.96 | 4.57 | – | 6.35 | 8.38 | 10.31 | 14.27 | 17.48 | 21.44 | 25.4 | 28.58 | 33.32 | 9.53 | 12.7 | 25.4 |
| 350 | 14″ | 355.5 | 3.96 | 4.78 | 6.35 | 7.92 | 9.53 | 11.13 | 15.09 | 19.05 | 23.83 | 27.79 | 31.75 | 35.71 | 9.53 | 12.7 | – |
| 400 | 16″ | 406.4 | 4.19 | 4.78 | 6.35 | 7.92 | 9.53 | 12.7 | 16.66 | 21.44 | 26.19 | 30.96 | 36.53 | 40.49 | 9.53 | 12.7 | – |
| 450 | 18″ | 457.2 | 4.19 | 4.78 | 6.35 | 7.92 | 11.13 | 14.27 | 19.05 | 23.83 | 39.36 | 34.93 | 39.67 | 45.24 | – | – | – |
| 500 | 20″ | 508 | 4.78 | 5.54 | 6.35 | 9.53 | 12.7 | 15.09 | 20.62 | 26.19 | 32.54 | 38.1 | 44.45 | 50.01 | – | – | – |
| 550 | 22″ | 558.8 | 4.78 | 5.54 | 6.35 | 9.53 | 12.7 | – | 22.23 | 28.58 | 34.93 | 41.28 | 47.63 | 53.98 | – | – | – |
| 600 | 24″ | 609.6 | 5.54 | 6.35 | 6.35 | 9.53 | 14.27 | 17.48 | 24.61 | 30.96 | 38.89 | 46.02 | 52.37 | 59.54 | – | – | – |
CHEMICAL COMPOSITION % OF STEEL S355J2H (1.0576): EN 10219
| Designation | Type of deoxidation |
Sub Grop |
C % max. Nominal thickness(mm) |
Si % max. |
Mn % max. |
P % max. |
S % max. |
N % max. |
||
| According to EN10219 | According to EN10219 | ≤40 | ＞40≤65 | |||||||
| S355J2H | 1.0576 | FF | QS | 0.22 | 0.22 | 0.55 | 1.6 | 0.03 | 0.03 | – |
1. The deoxidation methods are designated as follows:
FF-Full killed steel containing nitrogen binding elements in amounts sufficient to bind available nitrogen (e.g.min.0.020% total Al, or 0.015% soluble Al).
2. QS-quality steel.
3. It is permissible to exceed the specified values provided that for each increase of 0.001%N the P max content will be reduced by 0.005%, the N content of the ladle analysis, however, shall not be more than 0.012%
4. The max. value for nitrogen does not apply if the chemical composition shows a minimum total Al content of0.020% with a minimum AL/N ratio of 2:1, or if sufficient other N-binding elements are present. The N-binding elements shall be recorded in inspection Document.
MECHANICAL PROPERTIES FOR S355J2H NON-ALLOY STRUCTURAL STEEL
| Designation |
Minimum Yield Strength REh in N/mm2 |
Tensile Strength Rm in N/mm2 |
Minimum percentage elongation L0-5,65√S0 | Impact properties | ||||||||
| According to EN10219 | According to EN10219 | Nominal thickness in mm | Nominal thickness in mm | Longitudinal | Transverse |
Test Temperature |
Minimum average absorbed energy(J)for standard test pieces |
|||||
| ≤16 | ＞16≤40 | ＞40≤65 | ＜3 | ≥3≤65 | Nominal thickness in mm | |||||||
| ≤40 | ＞40≤65 | ≤40 | ＞40≤65 | |||||||||
| S355J2H | 1.0576 | 355 | 345 | 335 | 510-680 | 490-630 | 22 | 21 | 20 | 19 | -20 | 27 |
MANUFACTURING TOLERANCES OF EN 10219 S355J2H PIPE
| Characteristic | Round Hollow Sections | Square and Rectangular Hollow Sections |
| Outside Dimension | ± 1% with min ± 0.5mm and max ± 10mm | ± 1% with min of ± 0.5mm |
| Thickness (T) | T≤5mm: ±10% | T≤5mm: ±10% |
| T>5mm: ± 0.5mm | T>5mm: ± 0.5mm | |
| Out-of-Roundness | 2% | – |
| Convexity | – | Max .8% with min 0.5mm |
| Squareness of side | – | 90° ± 1° |
| External Corner Profile | – | T≤6mm: 1.6T to 2.4T |
| – | 6 | |
| – | T,10: 2.4T to 3.6T | |
| Twist | – | 2mm plus 0.5mm/m |
| Straightness | 0.2% of total | 0.15% of total |
| Mass | ±6% on individual length | |
INSPECTION AND TESTING OF EN 10219 S355J2H HOLLOW SECTIONS OF NON-ALLOY STEELS
EN 10219 S355J2H is tensile tested according to EN 10002-1 and Charpy impact tested according to EN 10045-1.
| Inspection Requirements | Inspection Frequency | |||
| Type of test |
Non-specific inspection |
Specific inspection | ||
|
Mandatory tests |
1 | Cast analysis |
One result per delivery item |
One per cast |
| 2 | Tensile test |
One result per delivery item |
One per test unit ( b) | |
| 3 |
Impact test for Qualities J2 and K2 only |
Not applicable | One set per test unit (b) | |
| 4 |
Surface condition and dimensions |
– | – | |
| 5 | NDT of the weld | Not applicable | All products, full length | |
|
Optional tests |
6 | Product analysis | Not applicable | One per test unit a |
| 7 |
Cast analysis additional elements |
Not applicable | See Option 1.2 | |
| 8 |
Impact test for qualities JR and J0 |
Not applicable | One set per test unit (b) | |
| b – Longitudinal or transverse samples at the discretion of the manufacturer. | ||||
Except as provided for in 10.2 for S355J2H hollow sections which are bundled, each hollow section shall be marked by suitable and durable methods such as painting, stamping, adhesive labels or attached tags with the following:
- the steel designation e.g., EN 10219-S355J2H;
- the manufacturer's name or trademark;
- in the case of specific inspection: an identification number, e.g., order number, which permits the correlation of the product or delivery unit to the related document;
- the mark of the external inspection representative (where applicable).
If the product is supplied in bundles, the mark required in EN10219 10.1 shall be on the label, which shall be firmly attached to the bundle product.
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Processing Performance Analysis
Cutting Performance
S355J2H steel tubes can be processed using:
Laser Cutting
Plasma Cutting
Flame Cutting
Water Jet Cutting
CNC Saw Cutting
The material maintains dimensional stability after machining and is suitable for complex fabrication projects.
Bending & Forming Performance
Excellent cold-forming capability allows:
Structural frames
Support columns
Architectural steel fabrication
Equipment supports
Minimal cracking risk during bending operations.
Welding Performance Analysis
S355J2H offers excellent weldability due to its controlled carbon equivalent value.
Suitable welding methods include:
MIG Welding
MAG Welding
TIG Welding
Submerged Arc Welding (SAW)
Flux-Cored Arc Welding (FCAW)
Benefits:
✔ Low risk of weld cracking
✔ Strong weld integrity
✔ Reduced preheating requirements
✔ High fabrication efficiency
Corrosion Resistance Analysis
Although S355J2H is not a stainless steel grade, it performs well in many industrial environments when protected through:
Hot Dip Galvanizing
Epoxy Coating
Powder Coating
Zinc Rich Primers
3PE Coating Systems
Expected service life can exceed 25 years in outdoor construction applications when properly protected.
Applications of S355J2H Steel Pipes
Construction Industry
Applications:
Steel buildings
Industrial workshops
Warehouses
High-rise structures
Commercial complexes
Benefits:
High structural strength
Reduced steel consumption
Faster installation
Infrastructure Projects
Applications:
Bridges
Highway structures
Railway projects
Airport terminals
Utility frameworks
Benefits:
Excellent load capacity
Long-term reliability
Cost-effective construction
Energy & Power Industry
Applications:
Power plant structures
Transmission towers
Wind energy systems
Solar mounting systems
Benefits:
Weather resistance
High strength-to-weight ratio
Low maintenance
Mechanical Engineering
Applications:
Machinery frames
Equipment supports
Crane structures
Material handling systems
Benefits:
Precision fabrication
High durability
Excellent weldability
Production Capacity
Xi'an Dongmeng Group Co., Ltd supplies:
Round Structural Pipes
Square Hollow Sections
Rectangular Hollow Sections
Custom Fabricated Components
Production Capability:
Annual Capacity: 300,000+ Tons
OD Range: Up to 1220 mm
Thickness Range: Up to 40 mm
Custom Length: Up to 18 m
OEM Processing Available
Services:
Laser Cutting
CNC Machining
Beveling
Drilling
Galvanizing
Painting
Inspection & Quality Assurance
Every S355J2H steel pipe undergoes strict inspection procedures.
Incoming Material Inspection
Raw material verification
Chemical composition testing
Mill certificate review
Manufacturing Control
Dimensional inspection
Weld seam monitoring
Online process control
Final Inspection
Tensile Test
Impact Test
Flattening Test
Hydrostatic Test
Ultrasonic Testing
Visual Inspection
Third-Party Inspection Available
SGS
BV
TÜV
Intertek
Lloyd's Register
Mill Test Certificate EN10204 3.1 supplied upon request.
Packaging & Shipping
Export Packaging Options:
Steel Bundles
Waterproof Wrapping
Plastic End Caps
Steel Strapping
Wooden Cases
Seaworthy Export Packing
Shipping Methods:
Container Shipment
Break Bulk Vessel
Bulk Cargo
Project Cargo Delivery
Export Destinations:
Europe
North America
South America
Middle East
Southeast Asia
Africa
Why Choose Us
Engineering Expertise
Over 20 years of experience serving global industrial projects.
Comprehensive Product Range
Complete structural steel solutions from pipes to profiles.
Strict Quality Control
ISO-compliant manufacturing and testing procedures.
OEM & Custom Fabrication
Customized dimensions, coatings, and machining services.
Fast Global Delivery
Efficient export logistics and project support.
Professional Technical Support
Engineering consultation before and after purchase.
FAQ
What does S355J2H mean?
S355J2H is a structural steel hollow section grade with a minimum yield strength of 355 MPa and impact toughness of 27 Joules at -20°C.
Is S355J2H equivalent to ASTM steel grades?
It is generally comparable to ASTM A500 Grade C and ASTM A572 Grade 50 depending on project requirements.
What is the difference between S355J2H and S355JR?
S355J2H is specifically designed for hollow sections and includes mandatory impact testing at -20°C.
Can S355J2H pipes be galvanized?
Yes. Hot-dip galvanizing is one of the most common corrosion protection methods.
Do you provide EN 10204 3.1 certificates?
Yes. EN 10204 3.1 MTC can be supplied with shipments.
Can custom sizes be manufactured?
Yes. Custom OD, wall thickness, length, and processing services are available.
What industries commonly use S355J2H pipes?
Construction, bridges, infrastructure, power plants, offshore structures, and mechanical engineering.
Do you support third-party inspections?
Yes. SGS, BV, TÜV, Intertek and other agencies are accepted.
What is your MOQ?
MOQ depends on size and specification. Mixed sizes are available for container orders.
How long is the delivery time?
Generally 7–25 days depending on stock availability and order quantity.
Contact Us
Xi'an Dongmeng Group Co., Ltd
Structural Steel Pipe & Hollow Section Manufacturer and Exporter
Phone / WhatsApp / WeChat: +8615769214734
Email: office@dongmjd.com
Customized sizes, OEM processing, project quotations, third-party inspections, and global logistics support are available.
Request a quotation today for your S355J2H steel pipe project.
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