RUNYING Steel Group is a premier Tangshan-based manufacturer and exporter of Hot-Dip Galvanized Structural Hollow Sections (SHS / RHS). Manufactured from high-quality ERW carbon steel tubes and coated with a durable protective zinc layer, our square and rectangular pipes comply strictly with ASTM A500 (Grade A, B, C), EN 10219 (S235JRH, S275JOH, S355J2H), and AS/NZS 1163 international structural standards.

Designed for commercial building framing, ground-mounted solar racking, perimeter security fencing, highway guardrails, and general heavy engineering, our galvanized box sections deliver an optimal combination of mechanical strength, high torsional rigidity, exceptional corrosion resistance, and total cost efficiency for global buyers.

Technical Specifications & Manufacturing Capabilities

Below are the standard engineering parameters, dimension ranges, and material grades for our structural galvanized square and rectangular steel tubes:

 · Steel Substrate Grades: Q195, Q235B, Q355B, S235JR, S275JR, S355JR, ASTM A500 Grade B/C, STKR400

 · Standard Lengths: 5.8m, 5.85m, 6.0m, 11.8m, 12.0m (Custom cut-to-length available: 1.0m – 12.0m)

 · Secondary Fabrication Services: Precision end beveling, factory pre-drilled bolt holes, swagging, and custom plate welding.

Key Advantages for Global Engineering Projects

1. Reliable Anti-Corrosion Defense:

 · Uniform Internal & External Coating: The hot-dip galvanizing process ensures both internal and external surfaces of the tube are thoroughly coated, protecting the steel frame against acid rain, humidity, and atmospheric oxidation.

 · Decades of Service Life: Provides 25–50 years of maintenance-free performance without requiring expensive field painting.

2. Precision Fabrication & Container Sizing:

 · Container Payload Optimization: Cut precisely to 5.85m for 20ft GP containers or 11.8m for 40ft HQ containers to minimize material waste and optimize container payload up to 26–27 Metric Tons.

 · Factory Pre-Punching: Pre-drilled mounting holes supplied according to your structural shop drawings for rapid, bolt-together assembly on site.

3. International Standard Compliance:

 · Fully certified by third-party inspection agencies (SGS / BV / ISO 9001), making our pipes readily acceptable for municipal infrastructure, commercial warehouses, and agricultural framing worldwide.

Typical Structural Applications

 · Solar & Renewable Energy Infrastructure: Ground-mounted solar PV tracking racks, wind turbine support platforms, and electrical substation structures.

 · Commercial Building Construction: Airport terminal framing, glass curtain wall supports, structural building columns, roof trusses, and stadium stands.

 · Transportation & Highway Utilities: Highway guardrail posts, overhead sign gantries, bridge decking supports, trailer chassis frames, and crash barriers.

 · Agricultural & Commercial Outfitting: Greenhouse structural frames, livestock fencing systems, industrial storage racks, and security gates.

Seaworthy Export Packaging & Logistics via Tianjin Port

To prevent white rust formation and surface abrasion during long-distance ocean shipping, our square and rectangular pipes are packed under rigorous export criteria:

 · Hexagonal Bundle Packaging: Firmly strapped into neat hexagonal bundles with high-tensile steel straps and pre-fitted lifting sling belts for safe crane discharge.

 · Anti-Rust Waterproof Wrapping: Wrapped with inner moisture-absorbing VCI film and outer heavy-duty waterproof woven plastic tarpaulin.

 · Container Loading Yard Advantage: Located right next to Tianjin Port, ensuring fast container stuffing and breakbulk vessel loading.

Frequently Asked Questions (FAQ)

 · Q1: What is the difference between SHS, RHS, and CHS? 

     A: These are industry acronyms for structural hollow sections: SHS stands for Square Hollow Section, RHS for Rectangular Hollow Section, and CHS for Circular Hollow Section. We supply all three with heavy hot-dip galvanized finishes.

 · Q2: What is the main difference between pre-galvanized and hot-dip galvanized square tubes? A: Pre-galvanized tubes are roll-formed from pre-galvanized steel strips (lower cost, typical zinc layer 40–120 g/m²). Hot-dip galvanized tubes are dipped into a molten zinc bath after tube welding, offering much higher zinc protection (180–500 g/m²) and full weld-seam protection for severe outdoor environments.

Technical Guides & Contextual Resources

 · Explore European standard structural H-beams: European Standard H Beam (HEA HEB HEM Series)

 · Explore structural C channel profiles: Structural C Channel & UPN/UPE Steel Beams

 · Explore high-strength concrete reinforcement: Hot-Dip Galvanized TMT Rebar (Fe500/Fe550)

 · Calculate container weight limits for pipe shipments: Steel Coil Weight & Dimensions Calculator Guide

Request an Instant Quote for Galvanized Square Steel Tubes

Need heavy-duty galvanized square or rectangular steel pipes for your upcoming structural project? Contact our sales engineering team today for factory-direct pricing, Mill Test Certificates (MTC EN 10204 3.1), and ocean freight schedules within 24 hours:

 · Direct Sales Email: admin@tsrysteel.com

 · WhatsApp / Phone: +86 15176700707

 · Official Web Homepage: http://www.tsrysteel.com

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