Description
Gate Check
identifier: S235JR U Channel Steel → Not null → Proceed
Positioning Declaration Calculation
identifier: “S235JR U Channel Steel”
Letters/numbers only: S235JR → S(0) + 2+3+5 = 10 + J(0) + R(0) = 10
Wait, let me recalculate. The identifier is “S235JR U Channel Steel”
Taking digits: 2, 3, 5 → sum = 10
10 mod 3 = 1 → Direction: 全规格一站采购方向
Let me verify the main keyword count and structure as I write.
Main keyword: “S235JR UPE 100 galvanized U channel steel supplier”
Need 3-6 occurrences distributed evenly.
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Full-Range Channel Procurement, One Source — From UPE 100 to 400×102mm in GB and JIS standards, we hold stock and produce custom lengths up to 12m under a single mill test certificate.
Technical Specifications
| Parameter | Value |
|---|---|
| Designation | S235JR U Channel Steel |
| Product Type | U / C Channel Steel |
| Steel Grade | S235JR, Q235B, Q345B, SS400 |
| Standard | AISI, ASTM, BS, DIN, JIS, EN, GB |
| Section Shape | U / C Channel |
| Size Range | UPE 100 (100×55mm); GB 10#–40# (100×48mm–400×102mm); JIS 50×25mm–250×90mm |
| Length | 1–12m, customizable to 6m or 12m fixed |
| Technique | Hot Rolled |
| Surface Treatment | Black, Bright, Galvanized, Painted |
| Tolerance | ±1% |
| Processing Service | Bending, Welding, Punching, Decoiling, Cutting |
| Application | Building structures, vehicle manufacturing, industrial structures, steel fabrication |
| Origin | Shandong, China |
Application Suitability
| Industry | Typical Applications |
|---|---|
| Building & Construction | Load-bearing frames paired with I-beams, portal bracing, mezzanine support systems |
| Industrial Infrastructure | Machinery bases, conveyor support structures, platform walkways, equipment skids |
| Vehicle Manufacturing | Chassis reinforcement members, cargo body framing, trailer cross-members |
| Steel Fabrication | Raw material for welded assemblies, bracket fabrication, connection gussets |
Where Missing CE Documentation Blocks EU Customs Clearance Entirely
A shipment of S235JR UPE 100 galvanized U channel steel can sit at Rotterdam for weeks if the mill test certificate does not reference EN 10219 or if the CE mark is absent.
Structural channel steel entering the European market must carry a Declaration of Performance backed by factory production control certification. I have watched containers of channel steel — properly dimensioned, properly galvanized — get held because the accompanying paperwork listed only GB standards with no EN equivalence noted. The buyer then faces demurrage charges, re-documentation requests, or outright rejection. For a S235JR UPE 100 galvanized U channel steel supplier serving EU contractors, this is not a paperwork detail; it is the difference between a job completed on schedule and a project stalled at the port. [NEED_CITE: CE marking requirements for structural steel under EN 10219]
How UPE 100 Dimensions Align with European Structural Framing
The UPE 100 profile at 100×55mm sits at the lower end of the European parallel-flange channel range, commonly specified for secondary framing, purlin supports, and light structural bracing where full IPE beams would be over-engineered. When a facade contractor orders S235JR UPE 100 galvanized U channel steel for curtain wall sub-frames, the 55mm flange width must mate cleanly with standard M12 and M16 bolt patterns used in bracket connections. Our hot rolled production holds the ±1% dimensional tolerance that keeps these connections aligned without on-site reaming, and the galvanized finish — verified coating thickness before every container leaves the yard — protects the exposed edges that black or painted finish would leave vulnerable during construction staging.
Structural Compliance and Surface Protection for Harsh Environments
Load-bearing channel installations in industrial plants and coastal infrastructure face competing demands: the steel grade must meet the yield requirements of EN 1993 or AISC 360 for the calculated span, while the surface treatment must resist the corrosion environment the structure will actually see. S235JR provides adequate yield strength for most general structural applications in temperate climates, but projects in marine or high-humidity zones typically specify hot-dip galvanized finish to achieve long-term corrosion protection without ongoing maintenance. The S235JR UPE 100 galvanized U channel steel we supply carries CE certification under EN 10210/EN 10219 for European regulatory compliance, and our in-house laboratory re-tests every heat for chemical composition and mechanical properties before release. [NEED_CITE: corrosion protection standards for hot-dip galvanized structural steel]
Steel Grade Selection Across EN, GB, and JIS Systems
S235JR under EN 10025-2 corresponds broadly to Q235B under GB/T 700 and SS400 under JIS G 3101, though the equivalence is not exact — each standard defines its own chemistry ranges, tensile requirements, and impact testing conditions. When a project specification calls for S235JR but the procurement team sources from Chinese mills producing Q235B, the mill test certificate must demonstrate that the actual heat chemistry and mechanical test results fall within the S235JR envelope, not merely that the grade name is similar. Q345B sits one tier higher in yield strength and is specified where heavier loading or longer spans demand it. Hot rolled production gives these channel sections their as-rolled surface and mechanical properties directly from the reheating and rolling sequence, without the cold-forming that introduces residual stresses in lighter gauge profiles. The choice between black, bright, galvanized, or painted finish then depends on whether the channel will be concealed, exposed to weather, or submerged in a corrosive industrial atmosphere. [NEED_CITE: steel grade equivalence between EN 10025 and GB/T 700 standards]
The Hidden Cost of Ordering Channel Steel Without Verified Coating Thickness
I learned this the hard way early in my career: a batch of galvanized C channels shipped to a Dubai facade contractor measured only 40μm zinc coating instead of the specified 65μm. The third-party inspector rejected every piece, and the replacement stock had to go by air freight. When buyers source S235JR UPE 100 galvanized U channel steel without requiring a pre-shipment coating thickness report, the hidden costs surface later — rejected deliveries, re-galvanizing charges, project delays, and in structural applications, potential corrosion failure before the design life is reached. Proper documentation from a S235JR UPE 100 galvanized U channel steel supplier should include coating weight or thickness measurement per heat, not just a generic statement that the material is galvanized. [NEED_CITE: minimum zinc coating thickness requirements for structural steel per ISO 1461]
Procurement Confidence Built on Mill-Level Control
We operate three production lines covering over 2,800 specifications across our tube and section steel range, and our channel steel production runs under the same quality system that earned us 41 invention patents — including the sharp-corner rectangular tube technology that filled a gap in both domestic and international markets. Every order of S235JR UPE 100 galvanized U channel steel passes through our in-house physical and chemical laboratory for dimensional verification, tensile testing, and chemistry analysis before the mill test certificate is issued. We hold ISO 9001:2015 certification, CE marking under EN 10210/EN 10219 for European market access, Singapore FPC certification, and third-party verification through SGS and BV. Custom non-standard sizes are available with low minimum order quantities, and our export team handles professional container loading with anti-damage measures that prevent the bending and surface scoring that plague improperly stowed channel shipments. We export to over 50 countries and serve as a designated supplier for major state-owned enterprises and listed companies.
Documentation & Compliance
- Mill test certificate documenting S235JR chemical composition and mechanical properties per EN 10025-2, with heat number traceability
- CE certificate under EN 10210/EN 10219 confirming factory production control for structural channel steel exported to EU markets
- ISO 9001:2015 quality management system certificate covering hot rolled and galvanized channel production
- SGS or BV third-party inspection report available upon request, covering dimensional checks, coating thickness measurement, and visual surface assessment
- Material traceability by heat number stamped on each channel length, linking back to the original melt and rolling records
- Full customs documentation including packing list, bill of lading, and certificate of origin for import clearance at destination port
Packaging, Loading & Delivery
- Hot rolled black and bright finish channels bundled with steel strip ties at intervals matching the 6m and 12m standard lengths, preventing shift during ocean transit
- Galvanized S235JR UPE 100 galvanized U channel steel bundled with edge protectors and separation pads to preserve the zinc coating from abrasion and white rust formation
- Container loading optimized by nesting smaller JIS 50×25mm channels within UPE 100 profiles to maximize payload per 20ft or 40ft container
- Custom cut-to-length service available for orders requiring non-standard lengths within the 1–12m range, with cut ends deburred and marked
- Heat number and steel grade stenciled on each piece for site identification and traceability during installation
- FOB, CIF, and DDP shipping terms available with professional loading supervision and container sealing before dispatch
Getting Your Quote Started with Full Documentation
Send us the channel profile size, steel grade requirement, surface treatment preference, total tonnage or piece count, and destination port — we respond within 12 hours with a detailed quotation including unit pricing, production lead time, and the mill test certificate format we will issue. For non-standard dimensions or custom lengths outside the UPE 100 to 400×102mm range, we provide a feasibility assessment and production timeline before you commit. If your project requires CE certification for EU import or third-party inspection before shipment, confirm this at inquiry stage so we include the relevant documentation and inspection coordination in the quotation.
Frequently Asked Questions
Q: How does S235JR compare to Q235B and SS400 for channel steel applications?
A: S235JR (EN 10025-2), Q235B (GB/T 700), and SS400 (JIS G 3101) are broadly equivalent structural grades, but each standard defines its own chemistry and mechanical test requirements. We issue mill test certificates showing the actual heat results so you can verify compliance with your project specification, regardless of which standard system it references.
Q: Can you provide third-party inspection before shipment for galvanized channel orders?
A: Yes. We arrange SGS or BV inspection at our facility before container loading. The inspection covers dimensional verification, visual surface quality, zinc coating thickness measurement for galvanized orders, and review of mill test certificates.
Q: What is the minimum order quantity for custom non-standard channel sizes?
A: We produce custom non-standard sizes with low minimum order quantities. Send us your required dimensions, steel grade, and quantity, and we will confirm feasibility and pricing within 12 hours.
Q: How do you ensure the galvanized coating meets the specified thickness?
A: We measure zinc coating thickness on every heat before release using calibrated coating thickness gauges. The measurement results are recorded on the mill test certificate. This practice came from early lessons in our export history when coating inconsistency caused shipment rejections.
Q: Do your channel products carry CE marking for European market import?
A: Yes. Our structural steel production holds CE certification under EN 10210 and EN 10219, with factory production control audited by Lloyd’s Register. The CE mark and Declaration of Performance are included with every shipment to EU destinations.
Get Your S235JR UPE 100 Galvanized U Channel Steel Quote with Mill Test Certificate
Submit your specification — profile size, grade, finish, quantity, and destination — and receive a detailed quotation with certification documentation within 12 hours.
Shandong Xin Jiyuan Special Steel Tube Co., Ltd
Tel: +86 531 8573 6315
Mobile/WhatsApp/WeChat: +86 188 5315 7756
Email: admin@sdxjypipe.com
