Description
Tianjin Sino East Steel manufactures and exports heavy-duty H-Frame (Mason Frame) scaffolding systems for residential construction, building renovation, bridge repair, and industrial maintenance. Compliant with EN 1004 / ANSI/SSFI SC100, our systems are engineered for the high-humidity, salt-air environments of West Africa, the Middle East, and Southeast Asia — with a hot-dip galvanised finish of ≥ 275 g/m² providing 25+ years corrosion protection in C3 environments.
H-Frame Scaffolding — Complete Specification
| Component | Standard Dimension | Material & Finish |
|---|---|---|
| Frame Width Options | 0.9m / 1.0m / 1.2m / 1.35m | Q235B ERW tube, HDG 275 g/m² |
| Frame Height Options | 1.0m / 1.5m / 1.7m / 2.0m | Q235B ERW tube, HDG 275 g/m² |
| Vertical Tube OD | Ø42mm × 2.5mm / Ø48.3mm × 3.2mm | Seamless or ERW, HDG |
| Safe Working Load (SWL) | 200 kg/frame standard; 270 kg/frame heavy-duty | Tested per EN 1004-1 |
| Cross Brace (X-brace) | 1.0m×1.5m / 1.2m×1.7m / 1.5m×2.0m | Q235B flat bar, HDG |
| Base / Top Screw Jack | Ø38mm × 600mm, adjustable ±150mm | Q235B, hot-dip galvanised |
| Coupling Pin | Ø19mm spring lock pin | 40Cr alloy steel, galvanised |
| Zinc Coating Weight | ≥ 275 g/m² (both sides, hot-dip) | ASTM A123 / EN ISO 1461 |
| Compliance Standard | EN 1004 / ANSI/SSFI SC100 / BS 1139 | Certificate available |
| Frame Weight (1.7m × 1.0m) | Approx. 9.5 kg/frame | — |
| Anti-Slip Steel Plank | 230mm × 38mm, lengths 1.8–3.0m | HDG, pressed dimple anti-slip |
Standard Export Bundle — 1 × 20GP Container (~24 MT)
For scaffolding rental companies and construction firms ordering a complete system, a typical 1 × 20GP container bundle (approx. 24 MT) for a 3-storey residential building facade covers:
- H-Frames (1.7m × 1.0m): ~1,100 pcs
- Cross Braces (1.5m × 2.0m): ~800 pcs
- Base Screw Jacks (Ø38mm × 600mm): ~400 pcs
- Top Screw Jacks: ~400 pcs
- Coupling Pins: ~2,200 pcs
- Anti-slip Steel Planks (2.0m): ~600 pcs (optional add-on)
Anti-Corrosion Performance — Critical for Coastal West Africa
All frames are hot-dip galvanised in a pure zinc bath at ≥ 450°C, achieving ≥ 275 g/m² (≈ 39 μm per side). This exceeds standard requirements for coastal environments — critical for projects in Accra, Lagos, Tema, Takoradi, Abidjan, and Mombasa where salt-air corrosion destroys unprotected steel in under 18 months. Salt-spray test life expectancy: 25+ years in C3 corrosion category.
Application Scenarios
- Residential & Commercial Construction: H-Frame is the most widely used scaffolding type across Ghana, Nigeria, and Ivory Coast for 2–6 storey building facades. Quick pin-lock assembly requires no special tools.
- Bridge Maintenance & Repair: Lightweight frame units allow access to confined bridge deck and pier faces without crane requirements.
- Industrial Tank Maintenance: H-Frame systems wrap around cylindrical oil storage tanks for inspection and painting — standard in Tema Industrial Area, Apapa Refineries.
- Road & Flyover Construction: Retaining wall and flyover formwork support using heavy-duty 270 kg SWL frames with double cross-bracing.
- Scaffolding Rental Fleet: Standardised pin-lock connection ideal for rental operations — fast setup/breakdown, low maintenance cost per hire cycle.
Quality Control
| QC Item | Standard / Method | Result |
|---|---|---|
| Tube Dimension | EN 10219 OD ±0.5% / WT ±10% | 100% batch inspection — Pass |
| Weld Integrity | Visual + 200% SWL load test per EN 1004 | Zero weld failure on certified batches |
| Zinc Coating Weight | Triple-spot test per ASTM A123 | Average ≥ 85 μm per side |
| Vertical Load Test | 4× SWL proof load per EN 1004-1 §5.1 | No deformation at 4× SWL |
| Documentation | MTC + Inspection Certificate + Packing List | Provided per shipment |
Frequently Asked Questions
Q: What is the minimum order quantity?
A: MOQ is 5 MT (approx. 500 frames + accessories). A complete system of 1 × 20GP container gives the best unit economics.
Q: Can H-Frame work with tube-and-clamp systems already on site?
A: Yes. H-Frame integrates with EN39-compatible tube-and-clamp couplers. Consult our technical team to confirm compatible tube OD for mixed systems.
Q: What shipping terms are available?
A: FOB Tianjin Xingang, or CIF/CFR to Tema Port (Ghana), Apapa Port (Nigeria), Jeddah, Durban, Rotterdam, Houston, or any worldwide port. Transit to Tema: 22–28 days.
Q: Do you issue a Mill Test Certificate for scaffolding?
A: Yes. Every shipment includes MTC covering chemical composition and mechanical properties of the steel tube, plus a zinc coating weight test report per ASTM A123.
🏭 Request a Bulk Quote — Tianjin Sino East Steel Enterprise Co., Ltd.
15+ Years Export Experience · ISO 9001 Certified · Mill Test Certificate Included · CIF Worldwide
