S235JR U-Shaped Structural Steel Pipe Galvanized Carbon Steel Pipe for Construction
This product is a galvanized carbon steel structural component manufactured from S235JR non-alloy structural steel. It is designed for construction projects that require dependable load-bearing capacity, good weldability, easy fabrication, and improved outdoor corrosion resistance through hot-dip galvanizing. In practical supply, S235JR is the base steel grade under EN 10025-2, while the finished structural tube or fabricated profile is commonly produced to structural hollow-section or fabricated steel requirements depending on the target market and project specification.
Material
S235JR is a widely used mild structural steel grade for metal structures and composite steel-concrete structures. For a U-shaped structural pipe or formed construction member, it offers a balanced combination of strength, formability, and cost efficiency. After hot-dip galvanizing, the zinc coating provides an additional corrosion-protection barrier for exposed service in construction environments.
Specifications
| Item |
Description |
| Base Material |
S235JR / 1.0038 carbon structural steel |
| Product Form |
U-shaped structural pipe / custom-formed structural tube |
| Surface |
Hot-dip galvanized |
| Manufacturing Route |
Fabricated from structural steel tube or structural hollow section to drawing |
| Supply Condition |
Cut-to-length, formed, welded, drilled, punched, or prefabricated as required |
| Dimensional Range |
Custom outer size, wall thickness, leg height, opening width, bend radius, and length |
| Inspection |
Visual inspection, dimensional check, coating inspection, and material certificate on request |
| Typical Documentation |
MTC / EN 10204 3.1 on request, heat-number traceability, packing list, coating records |
Main Features
-
Reliable structural strength for general construction and support applications
-
Good weldability and fabrication efficiency for cutting, drilling, and forming
-
Hot-dip galvanized surface for improved atmospheric corrosion resistance
-
Suitable for outdoor frames, supports, brackets, guard structures, and utility construction
-
Cost-effective solution for medium-strength structural projects
Our Advantages
1. Concern: Will the galvanized coating really hold up outdoors?
We address this by aligning the galvanized finish with recognized hot-dip coating standards such as EN ISO 1461, ASTM A123/A123M, or GB/T 13912 where required. These standards define coating requirements and test methods, giving buyers a clear inspection basis instead of relying on appearance only.
2. Concern: Can the material still be fabricated efficiently?
S235JR belongs to the EN 10025-2 non-alloy structural steel family and is widely used where weldability and general fabrication are important. For structural tube supply, buyers typically pair the grade with product standards such as EN 10219, ASTM A500, JIS G3444, or GB/T 6728 depending on the project market and fabrication route.
3. Concern: How do I reduce receiving risk and site rejection?
Serious buyers usually focus on heat traceability, mill test certificates, and shipment condition. We support batch traceability and inspection-document supply, and for galvanized cargo we pay attention to dry packing and ventilation because moisture trapped during storage or transport can contribute to white rust on zinc coatings.
Chemical Composition
The table below shows representative EN 10025-2 heat-analysis maximum values for five related structural grades commonly used for comparison. Actual certified values can vary with thickness class and product form. Fe is the balance.
| Grade |
C max (%) |
Si max (%) |
Mn max (%) |
P max (%) |
S max (%) |
N max (%) |
Cu max (%) |
| S235JR |
0.17 |
— |
1.40 |
0.035 |
0.035 |
0.012 |
0.55 |
| S235J0 |
0.17 |
— |
1.40 |
0.030 |
0.030 |
0.012 |
0.55 |
| S275JR |
0.21 |
— |
1.50 |
0.035 |
0.035 |
0.012 |
0.55 |
| S355JR |
0.24 |
0.55 |
1.60 |
0.035 |
0.035 |
0.012 |
0.55 |
| S355J2 |
0.20 |
0.55 |
1.60 |
0.030 |
0.030 |
— |
0.55 |
Mechanical Properties
The following table gives representative minimum mechanical properties for related EN 10025-2 grades, using common comparison values for structural sections and products. Exact certified results depend on thickness, section geometry, and delivery condition.
| Grade |
Yield Strength Min (MPa) |
Tensile Strength (MPa) |
Elongation Min (%) |
Impact Requirement |
| S235JR |
235 |
360-510 |
24 |
27 J at +20°C |
| S235J0 |
235 |
360-510 |
24 |
27 J at 0°C |
| S275JR |
275 |
410-560 |
23 |
27 J at +20°C |
| S355JR |
355 |
470-630 |
22 |
27 J at +20°C |
| S355J2 |
355 |
470-630 |
22 |
27 J at -20°C |
Execution Standards
For international procurement, the following standards are commonly referenced for this type of product or its closely related supply route. S235JR itself is the base material grade under EN 10025-2; the finished product standard depends on whether the item is supplied as structural hollow section, fabricated pipe/tube, or galvanized structural component.
| System |
Common Reference |
Brief Description |
| EN |
EN 10025-2 |
Base material standard for non-alloy structural steel grades such as S235JR |
| EN |
EN 10219-1/2 |
Cold-formed welded structural hollow sections for structural use |
| EN / ISO |
EN ISO 1461 |
Hot-dip galvanized coating requirements and test methods for fabricated steel articles |
| ASTM |
ASTM A500/A500M |
Structural tubing in rounds and shapes for buildings and general structural purposes |
| ASTM |
ASTM A123/A123M |
Hot-dip galvanized zinc coatings on iron and steel products |
| GOST |
GOST 13663 |
Technical requirements for steel section pipes |
| JIS |
JIS G3444 |
Carbon steel tubes for general structural and architectural use |
| GB |
GB/T 6728 |
Cold-formed structural sections for general structure |
| GB |
GB/T 13912 |
Technical requirements and test methods for hot-dip galvanized coatings on steel products |
Application Fields
This product is mainly used in construction and light-to-medium structural fabrication where corrosion protection and easy processing are required. Standards for structural tubing in Europe, the US, Japan, China, and Russia all target building, civil engineering, and general structural service, which matches the positioning of this product well.
| Application Field |
Typical Use |
| Building Structures |
Secondary frames, bracing members, roof supports, edge frames |
| Infrastructure |
Guard structures, protective barriers, sign supports, access systems |
| Architectural Fabrication |
Canopies, rail supports, trim frameworks, exposed galvanized members |
| Civil Engineering |
Embedded supports, light foundation frames, utility protection structures |
| Industrial Construction |
Equipment racks, walkway supports, maintenance guards, pipe-support frames |
| Agricultural and Municipal Projects |
Greenhouse frames, fencing supports, drainage protection frames |
Q: Are you trading company or manufacturer ?
A: manufacturer,also can do trading.
Q: How long is your delivery time?
A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock,
it is according to quantity.
Q: Do you provide samples? is it free or extra ?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.
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