Description
Direct Mill Supply for S355J0H SHS — Every S355J0H square hollow section tube leaves our Jinan facility with in-house lab re-testing on chemistry and zero-temperature impact, eliminating the gap between paper compliance and field performance.
Technical Specifications
| Parameter | Value |
|---|---|
| Designation | S355J0H Square Hollow Section Tube |
| Product Type | Welded Square Steel Tube / Square Hollow Section (SHS) |
| Steel Grade | S355J0H, Gr.B, S235, S275, S355, STK400 |
| Standard | EN 10219, EN 10210, ASTM A500, ASTM A53, GB/T 3091, ISO 10799-1, JIS G3466 |
| Section Shape | Square |
| Size Range | 19mm × 19mm – 800mm × 800mm |
| Wall Thickness | 1 – 30 mm |
| Length | 5.8m / 6m / 11.8m / 12m / Random Length |
| Technique | ERW (Welded) / Seamless |
| Surface Treatment | Black Painting / Hot-Dip Galvanized / Varnish / Bare |
| Tolerance | ±5% |
| Ends | Plain End with Plastic Caps |
| Application | Steel structures / Construction frames / Curtain wall & architectural facades / Support tubes / Building & infrastructure frames |
| Origin | Shandong, China |
Application Suitability
| Industry | Typical Applications |
|---|---|
| Construction & EPC | Building frames, column sections, roof truss members for commercial and industrial structures |
| Facade & Curtain Wall | Sharp-corner square tube framing for glass curtain wall systems and architectural steel cladding |
| Steel Structure Fabrication | Beam-to-column connections, bracing members, and portal frame components cut and welded to drawing |
| Infrastructure | Bridge handrail posts, sound barrier supports, and highway sign gantry columns |
| Machinery Manufacturing | Equipment base frames, conveyor support structures, and crane boom sections |
Where Zero-Temperature Impact Testing Separates Field-Ready SHS from Paper-Qualified Stock
A J0 designation means verified impact energy at 0°C — not a mill stamp copied from a J2 certificate.
Procurement teams ordering S355J0H square hollow section tube for projects in cold climates or seismically active zones frequently discover that “J0” on the purchase order does not guarantee Charpy impact testing at 0°C was actually performed. Some suppliers ship material tested only at room temperature, relabel it, and let the buyer find out at port-side SGS re-inspection. The result is a full-container rejection, three-week project delays, and air-freight replacement costs that dwarf the original material savings. [NEED_CITE: EN 10210 impact testing requirements for J0 grade hollow sections] Beyond impact values, wall-thickness tolerance drift on heavy-wall SHS above 20 mm can push sections below design load capacity — a defect invisible until ultrasonic measurement on site.
Matching S355J0H SHS to Structural and Facade Engineering Demands
S355J0H square hollow section tube in the 19×19 mm to 800×800 mm range covers everything from light-gauge curtain wall mullions to heavy-duty column sections in multi-storey frames. The 1–30 mm wall thickness band lets specifiers choose between weight-optimized profiles for facade systems and thick-wall sections for load-bearing nodes — all from one supplier holding 2,800+ specifications in active stock. For projects requiring sharp external corners on architectural facades, our patented right-angle forming technology delivers clean 90° edges that standard rounded-corner SHS cannot achieve, eliminating on-site grinding and filler work.
Structural Code Compliance and Certification Pathways
Engineering designs referencing EN 1993-1-1 for steel structures require hollow sections manufactured to EN 10219 (cold-formed) or EN 10210 (hot-formed finished), with CE marking mandatory for EU market entry. S355J0H conforms to both standards when produced in our certified lines, and our Lloyd’s-register CE documentation references the correct EN standard — a detail that frequently blocks customs clearance when suppliers cite the wrong directive. For North American projects, ASTM A500 Gr.B equivalence is documented on the same mill test certificate, avoiding dual-order confusion. [NEED_CITE: CE marking requirements for structural steel hollow sections under EN 10219]
Steel Grade Selection and Manufacturing Process Explained
The S-series designation (S235 → S275 → S355) indicates increasing minimum yield strength, making S355J0H the standard choice for primary structural members where higher load capacity justifies the incremental cost over S235. The “J0” suffix specifies Charpy impact testing at 0°C — critical for projects in Northern Europe, high-altitude regions, or cold-storage facilities. ERW welded SHS offers cost efficiency for standard structural applications, while seamless options serve higher-pressure or more demanding fatigue environments. Hot-dip galvanizing extends service life to 25+ years in coastal or industrial atmospheres, whereas black painted or oiled finishes suit indoor structural use where appearance is secondary. Wall thickness tolerance of ±5% applies across the full 1–30 mm range, though specifiers should confirm whether negative tolerance is acceptable for their design calculations. [NEED_CITE: steel grade equivalence mapping between EN S355 and ASTM A500 Gr.B]
Hidden Costs of Procuring Without Verified Impact Certification
Ordering S355J0H square hollow section tube from suppliers who cannot produce heat-specific EN 10204 3.2 certificates creates downstream risk: failed third-party inspection at destination port, project acceptance delays, and potential structural liability if sub-standard material is installed. Material without verified 0°C impact values may pass visual inspection but fail brittle fracture under dynamic loading in cold environments — a failure mode referenced in EN 1993-1-10 for low-temperature applications. The cost of re-ordering and air-freighting replacement SHS typically exceeds the original material value by a factor of three to five. [NEED_CITE: EN 1993-1-10 material toughness requirements for low-temperature steel structures]
Why Engineering Procurement Teams Specify SD XJY Pipe for S355J0H SHS
Every S355J0H square hollow section tube we produce passes through our in-house physical and chemical laboratory before release — dimensional checks, chemistry spectrometer analysis, and impact testing at 0°C for J0-grade orders. Our 41 invention patents include China’s original sharp-corner rectangular tube technology, now covering 2,800+ specifications with wall thickness up to 40 mm. Full CE certification under EN 10210 and EN 10219, ISO 9001:2015 registration, and Singapore FPC approval allow us to supply EU, Southeast Asian, and Middle Eastern projects with complete documentation. We arrange SGS or BV third-party inspection before shipment, and our container loading team uses custom cradles and edge protectors to prevent bending damage on long-length SHS during ocean transit.
Documentation & Compliance
- Mill test certificate documenting S355J0H chemical composition (C, Mn, Si, P, S, CEV) and mechanical properties including 0°C Charpy impact values per EN 10219 or EN 10210
- CE certificate issued under EN 10210-1 for hot-formed or EN 10219-1 for cold-formed S355J0H hollow sections, valid for EU customs clearance
- ISO 9001:2015 quality management system certificate covering design, production, and testing of structural steel tubes
- SGS or BV third-party inspection report verifying dimensional tolerance, surface quality, and mechanical test results before container sealing
- Heat number traceability linking each S355J0H SHS bundle to its original slab chemistry and rolling/forming records
- Export documentation including packing list, bill of lading, and certificate of origin for destination-country import clearance
Packaging, Loading & Delivery
- S355J0H SHS bundled with high-tensile steel straps at minimum four points per bundle, with wooden or rubber edge protectors on hot-dip galvanized surfaces to preserve zinc coating integrity
- Black painted or bare S355J0H tubes lightly oiled and fitted with plastic end caps to prevent moisture ingress and edge damage during ocean transit
- Container loading optimized for 6m and 12m lengths using custom steel cradles and anti-roll bracing to prevent bending on heavy-wall sections above 20 mm
- Random length or cut-to-order S355J0H SHS clearly marked with heat number, steel grade, and dimension on each piece for site identification
- FOB, CIF, and DDP shipping terms available from Qingdao port, with professional container loading supervision and real-time tracking until destination port arrival
Requesting a Compliance-Verified S355J0H SHS Quotation
Submit your S355J0H square hollow section tube requirements — including outer dimension, wall thickness, length, surface treatment, quantity, and destination port — and receive a detailed quotation with unit pricing, production lead time, and shipping terms within 12 hours. We provide EN 10204 3.1 mill test certificates as standard, with EN 10204 3.2 third-party witnessed certificates and SGS/BV inspection available on request. For non-standard dimensions or sharp-corner architectural SHS, our engineering team confirms feasibility and tooling requirements before production commitment.
Frequently Asked Questions
Q: How does S355J0H compare to ASTM A500 Gr.B and JIS STK400 in chemical composition and mechanical properties?
A: S355J0H meets EN 10219/EN 10210 requirements and is broadly equivalent to ASTM A500 Gr.B in yield strength range and JIS G3466 STK400 in structural application, though exact chemical limits differ by standard. We provide grade equivalence mapping on request and can supply mill test certificates referencing multiple standards for dual-certified material.
Q: Can you provide EN 10204 3.2 certificates and arrange third-party inspection before shipment?
A: Yes. EN 10204 3.2 certificates require witnessed testing by an independent inspector (SGS, BV, or Lloyd’s) at our facility before shipment. We coordinate third-party inspection scheduling and include the inspection report in the export documentation package.
Q: Do you produce non-standard S355J0H SHS dimensions outside the 19×19 to 800×800 mm range?
A: We hold 2,800+ specifications in our active range covering 19×19 mm to 800×800 mm with wall thickness 1–30 mm. For dimensions outside this range, we evaluate custom production feasibility based on tooling availability and minimum order quantity — contact our engineering team with your specific requirements.
Q: When should I specify hot-dip galvanized versus black painted finish for S355J0H SHS?
A: Hot-dip galvanizing is specified for outdoor, coastal, or high-humidity environments where corrosion protection extends service life to 25+ years. Black painted or oiled finishes suit indoor structural applications, temporary works, or projects where field welding and painting will occur after installation.
Q: What is the typical production lead time for stock sizes versus custom S355J0H SHS orders?
A: Standard sizes within our 2,800+ specification range typically ship from stock or enter immediate production. Custom non-standard dimensions or large-quantity orders follow typical production lead times confirmed at quotation stage based on current mill scheduling.
Q: Are your CE marks valid for EU import and do you provide complete export documentation?
A: Our CE certification under EN 10210 and EN 10219 is issued by Lloyd’s Register and valid for EU market entry. We provide full export documentation including mill test certificates, packing lists, bills of lading, and certificates of origin for customs clearance in any destination country.
Get Your S355J0H SHS Quotation with Full Certification Package
Send your specification sheet — dimension, wall thickness, length, surface treatment, quantity, and destination — to receive pricing, mill test certificate samples, and production scheduling within 12 hours.
Shandong Xin Jiyuan Special Steel Tube Co., Ltd
Website: www.sdxjypipe.com
Tel: +86 531 8573 6315
Mobile/WhatsApp/WeChat: +86 188 5315 7756
Email: admin@sdxjypipe.com
Address: No.11889, Jingshi West Road, Lulian Group, Jinan City, Shandong Province, China
