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JIS G3101 SS400 U Channel Bar Manufacturer Japanese Standard Structural Steel Channel
Product Detail
| Standard | JIS, GB, ASTM,EN |
| Material grade | Q195-Q420 Series, SS400-SS540 Series, S235JR-S355JR Series, ST Series, A36-A992 Series, Gr50 Series |
| Surface | Mild steel plain finish, hot dip galvanized, etc |
| Certificate | SGS, BV, etc |
| Capacity | 5000ton/month, for non-standard customized products please discuss with us. |
| Place of Origin | Tianjin, China |
| Sample of Galvanized channel iron bar | Available |
| Delivery term | FOB, CFR, CIF, DAP or discuss with us for other terms |
| Delivery time | 15-30 days after deposit received |
U Channel Chemical Composition
| Material | C (Carbon) | Si (Silicon) | Mn (Manganese) | P (Phosphorus) | S (Sulfur) |
| JIS G3101 SS400 | ≤0.25% | — | — | ≤0.050% | ≤0.050% |
Note:
JIS G3101 SS400 U Channel is the carbon structural steel grade used in construction. SS400 Specification Compared to certain alloy structural steels SS400 does not have tough limits for the minimum or maximum amount of carbon, silicon or manganese in its composition.
U Channel Mechanical Properties
| Material | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Hardness |
| JIS G3101 SS400 | ≥245 MPa (t≤16mm) | 400–510 MPa | ≥17% | Approx. 120–180 HB |
Note:
JIS G3101 SS400 U Channel Bar the mechanical characteristics may have a small difference based on the thickness of product or the difference of producing process. SS400 standard steel is easy to weld and machine and has enough strength and therefore is actively used by industry for steel structures and general building, such as bridge, industrial building, machinery frame, etc.
U Channel Size
| Channel steel model | Size | Cross-Sectional Area | Weight | ||
| Height (H) | Leg Length (B) | Web Thickness (t) | （cm2） | （kg/m） | |
| 5 | 50 | 37 | 4.5 | 6.93 | 5.44 |
| 6.5 | 65 | 40 | 4.8 | 8.54 | 6.7 |
| 8 | 80 | 43 | 5 | 10.24 | 8.04 |
| 10 | 100 | 48 | 5.3 | 12.74 | 10 |
| 12 | 120 | 53 | 5.5 | 15.36 | 12.06 |
| 14A | 140 | 58 | 6 | 18.51 | 14.53 |
| 14B | 140 | 60 | 8 | 21.31 | 16.73 |
| 16A | 160 | 63 | 6.5 | 21.95 | 17.23 |
| 16B | 160 | 65 | 8.5 | 25.15 | 19.74 |
| 20A | 200 | 73 | 7 | 28.83 | 22.63 |
| 20B | 200 | 75 | 9 | 32.83 | 25.77 |
| 30A | 300 | 85 | 7.5 | 43.89 | 34.45 |
| 30B | 300 | 87 | 9.5 | 49.59 | 36.16 |
| 30C | 300 | 89 | 11.5 | 55.89 | 43.81 |
UPN/UPE Steel Size
U Channel Production Process
1. Raw Material Preparation
Select high-quality steel billets according to the required standards and grades (e.g., JIS G3101 SS400, ASTM, EN, or GB standards).
2. Heating Process
The steel billets are heated in a walking beam furnace to reach the appropriate rolling temperature, ensuring a uniform internal structure.
3. Rolling Process
The heated steel billets are sequentially rolled through a roughing mill, intermediate mill, and finishing mill to gradually produce the required U-shaped channel steel with precise dimensions.
4. Straightening Process
The rolled U-shaped channel steel is straightened using a straightening machine to improve straightness and shape accuracy.
5. Cutting Process
The channel steel is cut to standard or custom lengths according to customer requirements.
6. Quality Inspection
Each batch of products must be inspected for the following items:
1.Dimensional Accuracy
2.Straightness
3.Surface Quality
4.Chemical Composition
U Channel Quality Inspection
1) Chemical Composition Testing
Check elements such as C, Si, Mn, P, and S to ensure the steel grade meets standards like JIS G3101 SS400, ASTM, EN, and GB.
2) Mechanical Property Testing
Test yield strength, tensile strength, elongation, and bending performance to guarantee structural reliability.
3) Dimensional Inspection
Measure height, flange width, web thickness, length, and weight to ensure accurate specifications.
4) Straightness Inspection
Check straightness, twist, and section shape to ensure easy installation and fabrication.
5) Surface Quality Inspection
Inspect for cracks, scratches, rust, and surface defects to maintain excellent appearance and performance.
6) Third-Party Inspection
Support quality verification by SGS, BV, TUV, and other international inspection agencies.
7) Final Inspection Before Shipment
Verify specifications, quantity, packaging, and documents before delivery to ensure safe shipment.
U Channel Customized Content
Size & Length: Full range of U Channel / C Channel sizes with customized lengths up to 12m.
Thickness & Steel Grades: Customized thickness and grades including ASTM, EN, JIS, and GB standards (A36, A572, A992, SS400, S235JR, S355JR, Q235B, Q355B, etc.).
Surface Treatment: Black steel, hot-dip galvanized, painted, and customized coatings available.
Processing Services: Precision cutting, punching, drilling, bending, welding, and fabrication based on drawings.
OEM & ODM Support: Customized branding, labeling, packaging, and project-specific solutions.
Quality Inspection: Full inspection of dimensions, material, and performance; third-party inspection support from SGS, BV, TUV, etc.
Technical Support: Professional material selection, drawing review, and engineering consultation.
Packaging & Export: Seaworthy export packaging, complete documents (MTC, CO), and global logistics support.
Applications: Steel structures, warehouses, workshops, machinery, infrastructure, and industrial projects.
Surface Finish
Application
Structural Steel Frame: Used in industrial and commercial buildings, providing strong load-bearing support and stable structural performance for steel construction projects.
Machinery & Equipment Frames: Ideal for manufacturing equipment bases and heavy machinery frames, ensuring durability, vibration resistance, and long service life.
Bridges & Infrastructure: Widely applied in bridge construction and public infrastructure projects, offering high strength, stability, and excellent load distribution performance.
Solar & Light Steel Systems: Widely used in photovoltaic mounting structures and light steel construction systems, providing high strength, corrosion resistance, and easy installation for solar energy projects, residential buildings, and modular steel structures.
Why Choose Our UPN Channel?
Multi Standard Production Option Available: We can customize and produce structural steel profiles with international standards of ASTM (American Standard), EN (European Standard), AS/NZS (Australian Standard), and JIS (Japan Standard) etc or peaceful customized standard to meet the technical requirement of global projects.
High Quality Processing:By advance technology processing straightness dimension and material of grade are guaranteed.Every Lot has been rigidly tested to guarantee stability of performance and quality reliability.
Third Party Inspection Supported: We facilitate internationally recognized inspection services such as BV and other 3rd party entities so that we can provide our customers with a quality assurance that is transparent and dependable.
Stable Supply & Quick Delivery: Strong producing capacity and supply chain management lead time can be guaranteed for big engineering project and the supply is stable.
World Project Support: Our professional team provides you with overseas on-site communication service, technical solution service, and after sales service, helping projects, and manufactures to solve procurement problems quickly.
Precision Match for High-End Buyers: From customized specifications to bulk purchases, we are able to cater to the demands of global engineering contractors, steel fabricators, distributors and industrial manufacturers from across the globe.
Packaging & Shipping
Royal Steel Group provides professional packaging and shipping solutions to ensure that structural steel products arrive at the destination safely, efficiently, and without damage during international transportation.
Professional Packaging: Steel profiles such as angle bars, channel steel, H beams, and I beams are bundled with high-strength steel straps. Protective measures are applied to prevent surface damage, deformation, and friction during handling and loading.
Standard Export Packing: Products are packed according to international export standards, with clear labeling of size, grade, quantity, and batch information for easy identification and inspection.
Safe Container Loading: We optimize loading methods based on product dimensions and weight, maximizing container utilization while ensuring stability during sea transportation.
Flexible Shipping Solutions: We support multiple transportation methods including container shipping, bulk vessel transportation, and customized logistics solutions based on project requirements.
Complete Export Documentation: We provide full shipping documents including Commercial Invoice, Packing List, Mill Test Certificate (MTC), Certificate of Origin, and third-party inspection reports (BV/SGS if required).Global Delivery Support: With extensive export experience to Southeast Asia, the Middle East, Africa, Central America, South America, and other regions, Royal Steel Group ensures reliable delivery schedules and professional logistics coordination for international customers.
FAQ
Q1: How do you ensure product quality?
A: Each batch is inspected for dimensions, straightness, chemical composition, mechanical properties, and surface quality. We also support third-party inspections by BV, SGS, and other international inspection organizations.
Q2: What is the delivery time for SS400 U Channel Bar?
A: Delivery time depends on order quantity, specifications, and production schedule. Royal Steel Group provides stable production planning and efficient logistics coordination to ensure timely shipment.
Q3: What documents can you provide for export orders?
A: We provide complete export documents including Mill Test Certificate (MTC), Commercial Invoice, Packing List, Certificate of Origin, and inspection reports (BV/SGS if required).
Q4: How do you package U Channel Steel for international shipping?
A: Channel steel is bundled with high-strength steel straps and packed according to export standards. We use suitable loading methods to prevent deformation and surface damage during transportation.
Q5: Why choose Royal Steel Group as a SS400 Channel Bar supplier?
A: Royal Steel Group provides multi-standard steel production, strict quality control, competitive pricing, stable delivery, customized solutions, overseas support, and professional after-sales service to meet the needs of global contractors, fabricators, and distributors.
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