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Help Center304 Stainless Steel Pipe Mill Test Report Provided 1-12 Inch Schedule 40 Welded Tube With 1 Year Warranty
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Hemaokang Steel (Shandong) Co., Ltd. is proud to present our premium 304 Stainless Steel Pipe in size range 1 to 12 inches, Schedule 40 wall thickness, expertly manufactured as welded tubes. Each pipe is accompanied by a Mill Test Report ensuring full traceability and compliance with international standards. Backed by our ISO9001-certified quality management system and a 1-year warranty, this product delivers reliable performance for demanding industrial applications. With annual export values exceeding US$50 million, we serve clients across North America, South America, Europe, Asia, Africa, and Oceania from our base in Liaocheng, Shandong, China, shipping via Qingdao port.
Our 304 stainless steel welded pipes are designed to offer excellent corrosion resistance, high tensile strength, and long service life. The Schedule 40 wall thickness provides a robust balance between weight and pressure capacity, making them suitable for a wide range of piping systems including oil & gas, chemical processing, water treatment, construction, and structural applications. Each pipe is produced using advanced high-frequency welding technology and undergoes rigorous quality checks including dimensional inspection, hydrostatic testing, and chemical composition analysis.
Key Features & Technical Specifications
- Material Grade: 304 Stainless Steel (UNS S30400, EN 1.4301)
- Size Range: 1 inch to 12 inch nominal diameter
- Wall Thickness: Schedule 40 (as per ASME B36.10)
- Type: Welded (ERW/EFW) – smooth inner surface, no flash
- Surface Finish: Annealed and pickled, mill finish, or optional polished
- Ends: Plain ends, beveled ends, or threaded (customizable)
- Length: Standard 20 ft (6 m) or custom lengths up to 40 ft (12 m)
- Test Report: Mill Test Report per EN 10204 3.1 or 3.2 available
- Warranty: 1 year against manufacturing defects
- Packaging: Bundled with steel straps, wrapped in waterproof material, or in wooden crates for export
Dimensional Data (Schedule 40 – 304 SS Welded Pipe)
| Nominal Size (inch) | Outside Diameter (mm) | Wall Thickness (mm) | Weight per Meter (kg) |
|---|---|---|---|
| 1" | 33.4 | 3.38 | 2.50 |
| 2" | 60.3 | 3.91 | 5.43 |
| 4" | 114.3 | 6.02 | 16.07 |
| 6" | 168.3 | 7.11 | 28.26 |
| 8" | 219.1 | 8.18 | 42.55 |
| 10" | 273.0 | 9.27 | 60.26 |
| 12" | 323.9 | 10.31 | 79.72 |
Note: Tolerance per ASTM A999. Custom sizes and schedules available upon request.
Advantages & Benefits
- Corrosion Resistance: 304 stainless steel offers excellent resistance to oxidation and many chemicals, reducing maintenance costs.
- Strength & Durability: Schedule 40 wall provides high pressure tolerance, suitable for both low and medium pressure systems.
- Weldability: Our welded pipes are manufactured with precision to ensure consistent weld quality, easy to join on site.
- Traceability: Every pipe comes with a Mill Test Report, giving you full confidence in material composition and mechanical properties.
- Cost-Effective: Welded construction offers lower cost compared to seamless pipes while maintaining performance for most applications.
- Global Logistics: Shipped from Qingdao port with efficient customs clearance and fast delivery to major markets worldwide.
Trust & Reliability
Hemaokang Steel (Shandong) Co., Ltd. is a trusted supplier in the steel industry with ISO9001:2015 certification and annual export value reaching US$50 Million – US$100 Million. Our team of 51–100 experienced professionals ensures strict quality control from raw material sourcing to final packaging. We have successfully served clients in North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Middle East, East Asia, Western Europe, Central America, Northern Europe, Southern Europe, South Asia, and the domestic market. Our 1-year warranty and responsive after-sales support demonstrate our commitment to customer satisfaction.
Choose Hemaokang Steel for your 304 stainless steel pipe needs – you will receive a product that meets international standards, complete with documentation, backed by a growing company with a strong global footprint. Contact us today for a quotation or technical consultation.
Frequently Asked Questions (FAQ)
1. What is the difference between Schedule 40 and Schedule 80?
Schedule 40 has a thinner wall compared to Schedule 80, offering lower weight and cost. Schedule 80 is used for higher pressure applications. Our pipes are Schedule 40 as standard, but other schedules can be customized.
2. Is a Mill Test Report included with every order?
Yes, every pipe is supplied with a Mill Test Report (MTR) that documents chemical composition and mechanical properties, ensuring full traceability.
3. Can you provide pipes in custom lengths?
Absolutely. Standard length is 20 ft (6 m), but we can cut to custom lengths (e.g., 10 ft, 40 ft) upon request. Please specify your requirements.
4. What surface finishes are available?
Standard finish is annealed and pickled (AP). We also offer mill finish, bright annealed, or polished (e.g., 180 grit, 320 grit) as options. Contact us for details.
5. How long is the warranty period?
We provide a 1-year warranty against manufacturing defects. This covers material flaws, weld defects, and dimensional non-conformities under normal use.
6. What are the acceptable payment terms?
We typically accept T/T (30% deposit, 70% before shipment) or L/C at sight. Other terms can be discussed for long-term cooperation.
7. Do you support third-party inspection?
Yes, we welcome inspection by SGS, BV, or any other independent agency. The cost can be included in the order or paid separately.
8. What is the typical lead time for an order?
For standard sizes and quantities, lead time is around 15–25 days after deposit. Larger or custom orders may require 30–40 days. We always confirm the schedule before order confirmation.
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