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Help Center304 Stainless Steel ERW Pipe 3 Inch Beveled Ends Schedule 40 For Water Supply
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Hemaokang Steel (Shandong) Co., Ltd. is a reliable supplier of high-quality steel products, with an annual export value of US$50 Million - US$100 Million. Our 304 Stainless Steel ERW Pipe, 3-inch Schedule 40 with beveled ends, is designed for demanding water supply systems. Manufactured from premium-grade 304 stainless steel, this pipe offers excellent corrosion resistance, durability, and long service life. We combine advanced production technology with strict quality control to ensure each pipe meets international standards.
This ERW (Electric Resistance Welded) pipe features a smooth weld seam and consistent wall thickness, making it suitable for high-pressure water transportation. The 3-inch (DN80) diameter and Schedule 40 wall thickness provide a perfect balance of flow capacity and structural strength. Beveled ends facilitate quick and secure welding connections, reducing installation time and costs.
Key Features & Technical Specifications
- Material: 304 Stainless Steel (0.08% Carbon, 18-20% Chromium, 8-10.5% Nickel)
- Size: 3 Inch (Nominal Bore 80 mm, Outer Diameter 88.9 mm)
- Wall Thickness: Schedule 40 (5.49 mm, weight per meter ~11.29 kg)
- Ends: Beveled (30° - 35° angle, 1.5 mm root face) for easy welding
- Manufacturing Process: ERW (Electric Resistance Welding) with post-weld heat treatment
- Surface Condition: Pickled & annealed, or optional polished finish
- Length: 6 meters (standard), 12 meters or custom lengths available
- Certifications: ISO9001:2015 quality management system
| Parameter | Value |
|---|---|
| Outer Diameter | 88.9 mm (3.5 inches) |
| Wall Thickness | 5.49 mm (0.216 inch) |
| Weight per Meter | 11.29 kg (24.9 lbs) |
| Pressure Rating | Up to 500 psi (depending on temperature) |
| Working Temperature | -20°C to 400°C (-4°F to 752°F) |
| Bend Radius | 3D (3 times OD) for cold bending |
Advantages for Water Supply Applications
- Corrosion Resistance: 304 stainless steel withstands chlorinated water, humidity, and soil conditions, reducing maintenance costs.
- Hygienic & Safe: Non-toxic material, no leaching of harmful substances, safe for drinking water.
- High Strength-to-Weight Ratio: Schedule 40 wall provides robust pressure handling without excessive weight, simplifying installation.
- Easy Welding: Beveled ends ensure strong, leak-proof joints with minimal weld preparation.
- Long Service Life: Expected lifespan of 50+ years under normal conditions, offering excellent return on investment.
- Versatile Connections: Compatible with flanges, couplings, and other fittings.
Our pipes undergo rigorous testing including hydrostatic pressure tests, eddy current inspection, and dimensional checks. We offer customizable lengths and surface finishes to meet specific project requirements. With our ISO9001 certified facility and experienced team, we ensure consistent quality for every shipment.
Trust Hemaokang Steel – Since our establishment in 2025, we have rapidly grown to serve global markets including North America, Europe, Southeast Asia, and Africa. With an annual export value exceeding US$50 million and a team of 51-100 skilled professionals, we are committed to delivering reliable steel solutions. Our factory in Liaocheng, Shandong, is strategically located near Qingdao Port for efficient logistics. We welcome inquiries, sample orders, and long-term partnerships. Contact us today to discuss your water supply piping needs.
Frequently Asked Questions
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Q: What is the difference between ERW and seamless stainless steel pipe?
A: ERW pipe is manufactured by rolling metal and welding the seam, offering cost-effective production with consistent wall thickness. It is suitable for many applications, including water supply. Seamless pipe has no weld seam, but is more expensive. Our ERW pipe meets the same quality standards for pressure and durability. -
Q: Can this pipe be used for hot water supply?
A: Yes, 304 stainless steel can handle temperatures up to 400°C. However, for continuous hot water above 60°C, we recommend consulting with our technical team to ensure proper expansion allowance. -
Q: Are the beveled ends suitable for socket welding?
A: The beveled ends are designed for butt welding. For socket welding, we can provide plain ends or square cut ends upon request. -
Q: What is the minimum order quantity (MOQ)?
A: Our standard MOQ is 1 ton for stock sizes. For custom lengths or special finishes, MOQ may vary. Please contact us for details. -
Q: Do you provide third-party inspection?
A: Yes, we can arrange inspection by SGS, BV, or other accredited agencies at buyer's cost. Our own QC team also issues mill test certificates. -
Q: How long is the delivery time?
A: For standard sizes, delivery is typically 7-15 days after deposit. For custom orders, it may take 20-30 days depending on quantity. -
Q: Is this pipe suitable for underground installation?
A: Yes, 304 stainless steel has good corrosion resistance in most soil conditions. For highly corrosive environments, we recommend additional protective coating or using 316L grade. -
Q: What packaging do you use for export?
A: Pipes are bundled with steel straps, wrapped in plastic or waterproof paper, and secured in containers. Wooden crates are available for fragile surfaces.
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