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Help Center2 Inch Galvanized Steel Pipe 2.5mm Wall Thickness S235JR for Construction Support
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Hemaokang Steel (Shandong) Co., Ltd. is a professional manufacturer and exporter of steel pipes, established in 2025 with an annual export value of US$50 million - US$100 million. Our 2-inch galvanized steel pipe with 2.5mm wall thickness, grade S235JR, is specifically designed for construction support applications. Combining high-strength material with a durable hot-dip galvanized coating, this pipe delivers reliable performance in scaffolding, bracing, and structural frameworks. Trusted by clients across North America, South America, Europe, Asia, Africa, and Oceania, our products are shipped from Qingdao Port with ISO9001 certification ensuring consistent quality.
This pipe is manufactured from S235JR carbon steel (EN 10025-2), offering excellent weldability and machinability. The 2.5mm wall thickness provides extra rigidity for load-bearing structures, while the hot-dip galvanized surface resists corrosion in outdoor and humid environments. Each pipe is produced to precise tolerances, with outer diameter of 60.3mm and customizable lengths from 3 to 12 meters. Below are the key technical specifications:
| Parameter | Value |
|---|---|
| Nominal Size | 2 inch (DN50) |
| Outer Diameter | 60.3 mm ±0.5 mm |
| Wall Thickness | 2.5 mm (SCH 40 equivalent) |
| Material Grade | S235JR (EN 10025-2) |
| Zinc Coating | ≥ 275 g/m² (hot-dip galvanized) |
| Length | 3m, 6m, 12m or custom |
| End Type | Plain end, beveled, or threaded |
| Standard | ISO9001, EN 10255, ASTM A53 |
Key Features & Benefits:
- High Load-Bearing Capacity: The 2.5mm wall thickness (typical SCH 40) provides superior strength for vertical and horizontal support, reducing the risk of buckling under heavy loads.
- Corrosion Resistance: Hot-dip galvanized coating (≥275 g/m²) creates a metallurgical bond that protects against rust, extending service life in outdoor construction sites by 5-10 times compared to black pipes.
- Excellent Weldability: S235JR steel has low carbon content (≤0.17%), making it easy to weld for custom frames, joints, or extensions without compromising structural integrity.
- Precision Manufacturing: Our pipes are produced with strict tolerances (OD ±0.5mm, wall thickness ±0.2mm) ensuring compatibility with standard fittings and couplers.
- Versatile Applications: Ideal for scaffolding, handrails, temporary supports, bracing, fence posts, and concrete formwork.
- Customizable Options: Lengths can be cut to your exact requirements, and ends can be plain, beveled, or threaded upon request.
- Global Quality Assurance: Each batch is tested for tensile strength, yield point, and zinc coating adherence under ISO9001 quality management system.
Technical Advantages for Construction Support:
Compared to standard schedule 40 pipes, our 2.5mm wall thickness offers a balance of strength and weight. The theoretical weight per meter is approximately 3.65 kg/m, making it easy to handle while still providing robust support. The galvanized finish also reduces maintenance costs—no need for painting or anti-rust treatment. In addition, the S235JR grade ensures a minimum yield strength of 235 MPa, suitable for non-critical structural applications as per EN 1993-1-1.
Trusted by Global Customers – Since 2025, Hemaokang Steel has exported over US$50 million worth of steel products annually to more than 15 countries across North America, South America, Europe, Asia, Africa, and Oceania. Our factory in Liaocheng, Shandong, is ISO9001 certified, and every shipment undergoes rigorous inspection before loading at Qingdao Port. We offer competitive pricing, flexible payment terms, and professional after-sales support. Contact us today to request a quote or sample for your next construction project.
Frequently Asked Questions (FAQ)
Q1: What is the actual outer diameter of a 2-inch galvanized pipe?
A: The outer diameter of 2-inch (DN50) pipe is 60.3 mm. Our pipes are manufactured to this standard, compatible with most scaffolding couplers and fittings.
Q2: Can this pipe be used for structural support in high-temperature environments?
A: S235JR steel is suitable for temperatures up to 300°C (572°F) for continuous service. For higher temperatures, we recommend consulting our technical team for alternative grades.
Q3: Is the galvanized coating food-grade or safe for drinking water?
A: No, this pipe is designed for construction support, not for potable water. The zinc coating is for corrosion protection, not for food contact. For water applications, consider our special pipes.
Q4: Do you offer custom lengths? What is the minimum order quantity?
A: Yes, we can cut to any length from 1m to 12m. The MOQ is typically 5 tons for standard sizes, but smaller quantities are available for sample orders.
Q5: How does the price compare to black steel pipes?
A: Galvanized pipes are generally 15-25% more expensive than black pipes due to the coating process. However, the extended lifespan and reduced maintenance often offset the initial cost.
Q6: What certifications do you provide with the shipment?
A: We provide a Mill Test Certificate (MTC) per EN 10204 3.1, along with ISO9001 certificate and a packing list. Third-party inspection (e.g., SGS, BV) is available upon request.
Q7: Can this pipe be threaded for connections?
A: Yes, we can thread both ends (female or male) to your specifications. The galvanized coating is applied after threading to ensure thread protection.
Q8: What is the typical lead time for orders?
A: For standard sizes (2-inch, 2.5mm wall, 6m length), lead time is 7-15 days after order confirmation. Custom lengths or special coatings may require 20-25 days.
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