Sino East manufactures high-quality scaffolding steel pipes to international standards. Our pipes are produced from S235, S275, S355, and STK500 steel grades with hot-dip galvanized finish. OD from 42.7mm to 60.3mm, wall thickness 1.6mm to 5.0mm, exported to 50+ countries worldwide.
Steel tubes are the most fundamental component in scaffolding. Whether used as standards (vertical posts), ledgers (horizontal beams), or braces, the quality of the pipe directly determines structural safety. Sino East produces pipes to meet the exacting requirements of global standards.
Our scaffolding pipes are manufactured from high-frequency welded (ERW) steel tubes, manufactured to BS1139, EN39, EN10219, JIS 3444, and KSD 3566 standards. Each pipe undergoes strict dimensional inspection, flattening tests, and zinc coating verification.
The most common specification is OD 48.3mm (or 48.6mm) with 3.2mm or 4.0mm wall thickness, hot-dip galvanized to ISO 1461. Pipes are bundled in 61-piece packs for efficient container loading — each 20ft container holds approximately 25-28 tons.
We maintain 10,000+ tons of monthly production capacity, ensuring rapid fulfillment for even the largest project orders. All pipes can be customized with your brand embossing and color-coded end caps.
BS1139, EN39, EN10219, JIS 3444, KSD 3566, ASTM A53 — one source for all standards
>40 micron zinc layer per ISO 1461. 280g/m² minimum for superior corrosion resistance
±0.5mm OD tolerance, ±10% WT tolerance. End-finished plain and burr-free for safety
S235, S275, S355, STK400, STK500, A36, A53 — choose the right grade for your load
61 pipes per bundle for maximum container utilization. Steel strapped with edge protectors
Emboss your logo, trademark, and batch tracking codes directly on every pipe surface
| Outer Diameter | Wall Thickness | Steel Grade | Standard | Surface Finish | Typical Use |
|---|---|---|---|---|---|
| 48.3mm | 3.2mm / 4.0mm | S235 / S275 | BS1139 / EN39 | Hot-Dip Galvanized | UK & EU standard scaffolding |
| 48.6mm | 1.8–2.5mm | STK400 / STK500 | JIS 3444 / KSD 3566 | Pre-Galvanized (GI) | Japan & Korea lightweight scaffolding |
| 42.7mm | 2.4–3.2mm | S235 / S275 | EN39 / BS1139 | Hot-Dip Galvanized | Ledgers & braces — lighter duty |
| 60.3mm | 3.2–5.0mm | S355 / S275 | EN10219 | Hot-Dip Galvanized | Heavy-duty standards & shoring |
| 48.3mm | 2.5–3.0mm | S235 | BS1139 | Black (Self-color) | System scaffold manufacturing |
| Custom 20–89mm | 1.6–5.0mm | Any grade | Per spec | HDG / GI / Black / Painted | Special projects |
Sino East Steel Group manufactures high-frequency welded (ERW/HFW) structural scaffolding pipes strictly adhering to EN 39, BS 1139, ASTM A53, and JIS G3444 standards. Sourced from prime hot-rolled coil (Q235B, Q345B, S235GT, S355J2H), all tubes feature precision deburred ends, continuous eddy current weld testing, and heavy-duty hot-dip galvanizing.
| Standard & Description | Item Part Code | Outer Dia. (OD) | Wall Thickness (WT) | Steel Grade & Yield ($f_y$) | Unit Weight (kg/m / lbs/ft) | Standard Lengths | Surface Finish Spec | Primary Application |
|---|---|---|---|---|---|---|---|---|
| BS 1139 / EN 39 Type 4 Scaffolding Tube | DFS-TUBE-EN39-T4 |
48.3 mm (1.90") | 4.0 mm (0.157") | S235GT / Q235B (≥235 MPa) | 4.37 kg/m (2.94 lbs/ft) | 6.0m / 6.4m / Cut-to-length | HDG ≥45-65 μm | UK, EU & Middle East heavy industrial scaffolds |
| EN 39 Type 3 / BS 1387 Medium Tube | DFS-TUBE-EN39-T3 |
48.3 mm (1.90") | 3.2 mm (0.126") | S235GT / Q235B (≥235 MPa) | 3.56 kg/m (2.39 lbs/ft) | 5.8m / 6.0m / 6.4m | HDG / Pre-Galv | Southeast Asia, Australia, commercial construction |
| ASTM A53 Schedule 40 US Scaffolding Pipe | DFS-TUBE-A53-SCH40 |
48.3 mm (1.90" OD) | 3.68 mm (0.145") | Grade A / B (≥240 MPa) | 4.05 kg/m (2.72 lbs/ft) | 20 ft (6.096m) / 21 ft | HDG / Black Oiled | USA, Canada, Mexico, South American Tube & Clamp |
| JIS G3444 STK 500 Asian Scaffolding Pipe | DFS-TUBE-JIS-486 |
48.6 mm (1.91") | 2.4 mm (0.094") | STK 500 (≥325 MPa High Yield) | 2.73 kg/m (1.83 lbs/ft) | 1.0m to 6.0m (0.5m increments) | Pre-Galv / HDG | Japan, South Korea, Vietnam, Thailand frame scaffolds |
| JIS G3444 Sub-Frame Inner Tube | DFS-TUBE-JIS-427 |
42.7 mm (1.68") | 2.2 mm / 2.4 mm | STK 400 / Q235 (≥235 MPa) | 2.20 kg/m (1.48 lbs/ft) | Custom Frame Lengths | Pre-Galv Z180 | Japanese & Korean walk-through frame components |
| Heavy-Duty Shoring Leg Tower Tube | DFS-TUBE-SHOR-603 |
60.3 mm (2.37") | 3.6 mm / 4.0 mm | Q345B / S355 (≥345 MPa) | 5.03 kg/m (3.38 lbs/ft) | 1.5m, 2.0m, 3.0m, 6.0m | HDG ≥65 μm | Civil bridge pier shoring & heavy falsework towers |
| High-Strength Structural Scaffolding Tube | DFS-TUBE-EN10219-S355 |
48.3 mm (1.90") | 3.2 mm / 4.0 mm | S355J2H (≥355 MPa) | 3.56 / 4.37 kg/m | 6.0m / Cut-to-length | HDG / Painted | High-load falsework, offshore marine, truss beams |
| 6082-T6 Structural Aluminum Scaffold Tube | DFS-TUBE-ALU-48 |
48.3 mm (1.90") | 4.0 mm / 4.47 mm | Aluminum 6082-T6 (≥260 MPa) | 1.50 kg/m (1.01 lbs/ft) | 3.0m, 4.0m, 6.0m | Anodized / Mill | Lightweight suspended scaffolds, aviation maintenance |
For structural engineers designing tube-and-fitting scaffolds and heavy falsework shoring, the table below specifies exact geometric cross-sectional values, moment of inertia ($I$), elastic section modulus ($W_{el}$), and design bending moment resistance ($M_{c,Rd}$) calculated in accordance with EN 12811-1 and Eurocode 3 (EN 1993-1-1):
| Tube Specification | Outer Dia. $D$ (mm) | Thickness $t$ (mm) | Section Area $A$ ($ ext{cm}^2$) | Moment of Inertia $I$ ($ ext{cm}^4$) | Section Modulus $W_{el}$ ($ ext{cm}^3$) | Radius of Gyration $i$ (cm) | Design Yield $f_y$ (MPa) | Design Moment $M_{c,Rd}$ (kN·m) |
|---|---|---|---|---|---|---|---|---|
| Ø48.3 × 4.0mm (EN 39 Type 4 / S235) | 48.3 mm | 4.0 mm | 5.57 $ ext{cm}^2$ | 13.80 $ ext{cm}^4$ | 5.71 $ ext{cm}^3$ | 1.57 cm | 235 MPa | 1.34 kN·m (11,860 in-lbs) |
| Ø48.3 × 4.0mm (EN 10219 / S355 High Yield) | 48.3 mm | 4.0 mm | 5.57 $ ext{cm}^2$ | 13.80 $ ext{cm}^4$ | 5.71 $ ext{cm}^3$ | 1.57 cm | 355 MPa | 2.03 kN·m (17,960 in-lbs) |
| Ø48.3 × 3.2mm (EN 39 Type 3 / S235) | 48.3 mm | 3.2 mm | 4.53 $ ext{cm}^2$ | 11.60 $ ext{cm}^4$ | 4.80 $ ext{cm}^3$ | 1.60 cm | 235 MPa | 1.13 kN·m (10,000 in-lbs) |
| Ø48.3 × 3.2mm (EN 10219 / S355) | 48.3 mm | 3.2 mm | 4.53 $ ext{cm}^2$ | 11.60 $ ext{cm}^4$ | 4.80 $ ext{cm}^3$ | 1.60 cm | 355 MPa | 1.70 kN·m (15,040 in-lbs) |
| Ø48.3 × 3.68mm (ASTM A53 Sch 40 / Gr. B) | 48.3 mm | 3.68 mm | 5.16 $ ext{cm}^2$ | 12.95 $ ext{cm}^4$ | 5.36 $ ext{cm}^3$ | 1.58 cm | 240 MPa | 1.29 kN·m (11,410 in-lbs) |
| Ø48.6 × 2.4mm (JIS G3444 / STK 500) | 48.6 mm | 2.4 mm | 3.48 $ ext{cm}^2$ | 9.45 $ ext{cm}^4$ | 3.89 $ ext{cm}^3$ | 1.65 cm | 325 MPa | 1.26 kN·m (11,150 in-lbs) |
| Ø60.3 × 3.6mm (Heavy Shoring Tower / S355) | 60.3 mm | 3.6 mm | 6.41 $ ext{cm}^2$ | 26.50 $ ext{cm}^4$ | 8.79 $ ext{cm}^3$ | 2.03 cm | 355 MPa | 3.12 kN·m (27,610 in-lbs) |
To ensure safe ocean freight handling and minimize unloading labor at destination job sites, all scaffolding pipes are automatically packed into tightly strapped 61-piece or 91-piece hexagonal bundles. Each bundle includes 6 heavy-gauge high-tensile steel straps and dual heavy-duty nylon lifting slings certified for crane handling.
| Tube Spec & Wall Thickness | Length (m / ft) | Bundle Config (Pcs) | Single Bundle Wt (kg / lbs) | 20GP Container Capacity | 40HQ Container Capacity | Breakbulk Vessel (Per 100 Tons) |
|---|---|---|---|---|---|---|
| Ø48.3 × 4.0mm (EN 39 Type 4) | 6.0 m (19.7 ft) | 61 pcs / Hex Bundle | 1,600 kg (3,527 lbs) | 15 Bundles (915 pcs = 24.0 Tons)* | 16 Bundles (976 pcs = 25.6 Tons) | ~3,820 pcs (62.5 Bundles) |
| Ø48.3 × 4.0mm (EN 39 Type 4) | 5.8 m (19.0 ft) | 61 pcs / Hex Bundle | 1,546 kg (3,408 lbs) | 16 Bundles (976 pcs = 24.7 Tons) | 17 Bundles (1,037 pcs = 26.3 Tons) | ~3,950 pcs (64.7 Bundles) |
| Ø48.3 × 3.2mm (EN 39 Type 3) | 6.0 m (19.7 ft) | 61 pcs / Hex Bundle | 1,303 kg (2,873 lbs) | 18 Bundles (1,098 pcs = 23.5 Tons)* | 20 Bundles (1,220 pcs = 26.1 Tons) | ~4,680 pcs (76.7 Bundles) |
| Ø48.3 × 3.2mm (EN 39 Type 3) | 5.8 m (19.0 ft) | 61 pcs / Hex Bundle | 1,259 kg (2,776 lbs) | 20 Bundles (1,220 pcs = 25.2 Tons) | 21 Bundles (1,281 pcs = 26.4 Tons) | ~4,840 pcs (79.4 Bundles) |
| Ø48.6 × 2.4mm (JIS STK 500) | 6.0 m (19.7 ft) | 91 pcs / Hex Bundle | 1,491 kg (3,287 lbs) | 16 Bundles (1,456 pcs = 23.8 Tons)* | 17 Bundles (1,547 pcs = 25.3 Tons) | ~6,100 pcs (67.0 Bundles) |
| Ø48.6 × 2.4mm (JIS STK 500) | 4.0 m (13.1 ft) | 91 pcs / Hex Bundle | 994 kg (2,191 lbs) | 25 Bundles (2,275 pcs = 24.8 Tons) | 26 Bundles (2,366 pcs = 25.8 Tons) | ~9,150 pcs (100.5 Bundles) |
* Note on 20GP container loading: Standard 20GP internal length is 5.898m. 5.8m pipes fit straight loading; 6.0m pipes are loaded into 40HQ containers or 20ft Open Top / diagonal placement.
100% of Sino East ERW/HFW scaffolding pipes pass through online Eddy Current Testing (EN 10246-1 / ISO 10893-2) at the mill line, detecting micro-defects or seam porosity in real-time. In addition, every production batch is subject to 5.0 MPa hydrostatic pressure testing for 5+ seconds.
Our heavy-duty hot-dip galvanizing immersion process produces a minimum zinc coating mass of 450-500 g/m² (≥65 μm average thickness). Metallurgically bonded zinc-iron alloy layers ensure 25+ years rust-free lifespan in offshore, coastal, and aggressive chemical environments (ASTM B117 salt spray ≥1,000 hrs).
Every shipment is accompanied by an original Mill Test Certificate (MTC 3.1) detailing exact chemical composition (C, Si, Mn, P, S, Al ≥ 0.02% for EN 39 compliance) and mechanical testing results (yield, tensile, elongation, flattening, and drift expanding tests).
Direct factory dispatch from Tianjin Port (North China steel hub). We issue official ASEAN-China Form E certificates granting 0% import customs duty to Vietnam (Cat Lai / Hai Phong 7-10 days), Thailand (Laem Chabang 5-7 days), Philippines, and Indonesia, with breakbulk vessel capability for 100-500+ ton mega orders.
| OD × WT (mm) | Grade | Weight (kg) | 61/Bundle (tons) |
|---|---|---|---|
| 48.3 × 2.4 | S235 | 16.30 | 0.99 |
| 48.3 × 2.5 | S235 | 16.94 | 1.03 |
| 48.3 × 2.7 | S235 | 18.22 | 1.11 |
| 48.3 × 3.0 | S235 | 20.11 | 1.23 |
| 48.3 × 3.2 | S235 | 21.36 | 1.30 |
| 48.3 × 4.0 | S235 | 26.21 | 1.60 |
| 42.7 × 2.4 | S235 | 14.31 | 0.87 |
| 42.7 × 3.0 | S235 | 17.62 | 1.07 |
| 60.3 × 3.2 | S355 | 27.04 | 1.65 |
| 60.3 × 4.0 | S355 | 33.32 | 2.03 |
| Length | OD × WT (mm) | Weight (kg) | kg/m |
|---|---|---|---|
| 6.4m | 48.3 × 3.2 | 22.78 | 3.56 |
| 6.4m | 48.3 × 4.0 | 27.97 | 4.37 |
| 5.0m | 48.3 × 3.2 | 18.21 | 3.56 |
| 4.0m | 48.3 × 3.2 | 14.57 | 3.56 |
| 3.0m | 48.3 × 3.2 | 10.92 | 3.56 |
| 2.0m | 48.3 × 3.2 | 7.28 | 3.56 |
| 1.0m | 48.3 × 3.2 | 3.64 | 3.56 |
| 6.4m | 60.3 × 3.5 | 31.36 | 4.90 |
| 6.4m | 60.3 × 4.0 | 35.54 | 5.55 |
| 15ft | 48.3 × 4.0 | 19.86 | 1.32/ft |
| Property | S235 (EN39) | S275 (EN10219) | S355 (EN10219) | STK500 (JIS/KSD) |
|---|---|---|---|---|
| Tensile Strength | 400 MPa | 410-560 MPa | 492 MPa | 500 MPa min |
| Yield Strength | 235 MPa | 275 MPa | 355 MPa | 355 MPa min |
| Elongation | 34% | 23% | 28% | 21% |
| Common OD | 48.3mm | 42.7 / 48.3mm | 48.3 / 60.3mm | 48.6mm |
| Typical WT | 3.2–4.0mm | 2.4–4.0mm | 3.2–5.0mm | 1.8–2.5mm |
| Best For | Standard EU construction | General structural use | Heavy-duty & shoring | Lightweight Asian markets |
| Standard | Region | OD | Key Requirements | Surface |
|---|---|---|---|---|
| BS1139 | UK / Commonwealth | 48.3mm | No aluminum requirement in composition | HDG required |
| EN39 | European Union | 48.3mm | Aluminum ≥ 0.02% in chemical composition | HDG required |
| EN10219 | EU (structural) | 42.7–89mm | Cold-formed welded hollow sections, S235–S460 | HDG or GI |
| JIS 3444 | Japan | 48.6mm | STK400/STK500, thin-wall lightweight tubes | Pre-Galvanized |
| KSD 3566 | South Korea | 48.6mm | Similar to JIS 3444, STK400/STK500 grades | Pre-Galvanized |
| AS 1576 | Australia | 48.3mm | Australian scaffolding components standard | HDG |
| ASTM A53 | USA | Custom | Pipe, steel, black and hot-dipped | HDG / Black |
>40μm zinc layer, >280g/m² coating. Immersion in 450°C zinc bath. Required by BS1139 & EN39 for construction use. Ideal for coastal & marine projects.
6-35μm zinc coating. Made from pre-galvanized steel coil/strip. Standard for Japanese & Korean markets. Lower cost option for indoor or temporary use.
No surface treatment. Raw ERW steel surface. Used primarily as raw material for system scaffolding manufacturing where further processing is required.
Custom color options with anti-corrosion paint or powder coating. Available for projects with specific aesthetic requirements or branding needs.
All pipes are end-plained and deburred. Clean, smooth edges for safe handling. No sharp burrs — compliant with site safety requirements.
Plastic end caps available in colors for quick size identification on site. Custom embossing for brand and batch traceability along pipe length.
Ringlock, Cuplock, Kwikstage, All Round vertical posts — the backbone of modular scaffolding
Traditional tube-and-fitting access with forged couplers for maximum versatility on complex structures
Commercial & residential building projects requiring safe, certified working platforms
Bridge construction, tunnel formwork, dam maintenance — high-load civil engineering applications
Petrochemical plants, power stations, shipyards — corrosion-resistant HDG essential
Temporary event scaffolding, grandstands, stage support requiring quick assembly/disassembly
Every batch tested and certified before shipment
Structural steel certification
Fusion welding quality
Quality management
HDG coating thickness
Third-party inspection
Pre-shipment inspection
EN 10204 3.1 / 3.2
Capacity verified in-house
EN 39 Type 4 features a 4.0mm nominal wall thickness ($4.37 ext{ kg/m}$), offering higher moment of inertia ($13.80 ext{ cm}^4$) and bending resistance ($1.34 ext{ kN}\cdot ext{m}$), making it the mandatory standard in the UK, European heavy industrial plants, and offshore oil/gas facilities. EN 39 Type 3 features a 3.2mm wall thickness ($3.56 ext{ kg/m}$), providing ~18.5% lighter weight per meter to optimize shipping freight and erection speed while maintaining compliant structural strength ($1.13 ext{ kN}\cdot ext{m}$ bending resistance) for commercial access scaffolding across Southeast Asia and the Middle East.
For 5.8m pipes loaded into a 20GP container, the capacity is 16 to 20 hexagonal bundles (976 to 1,220 pieces), totaling 24.5 to 25.5 metric tons (utilizing the maximum container payload). For 6.0m pipes loaded into a 40HQ container, the capacity is 16 to 21 bundles (976 to 1,281 pieces), totaling 25.5 to 26.5 metric tons. For large construction projects requiring 100 to 500+ tons, we arrange breakbulk cargo shipping directly from Tianjin Port.
All tubes are manufactured using automated high-frequency electric resistance welding (ERW/HFW) with continuous online Eddy Current non-destructive testing (EN 10246-1). Internal weld beads are fully trimmed to ensure smooth tube insertion. Pipes undergo multi-roll rotary straightening to guarantee straightness within 1/500 of total length (≤2mm per meter), complying with EN 39 clause 7.3.
Yes. Sino East Steel Group provides official ASEAN-China Free Trade Area Form E certificates, qualifying our scaffolding pipes for 0% import customs tariff in Vietnam (Cat Lai / Hai Phong ports, 7-10 days transit), Thailand (Laem Chabang port, 5-7 days transit), the Philippines, Indonesia, and Malaysia. Standard Certificate of Origin (CO) and Mill Test Certificates (MTC EN 10204 3.1) are supplied with all shipments.