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Help CenterStainless Steel Pipes 304 316L With Mill Test Report And 1 Year Warranty
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Welcome to Hemaokang Steel (Shandong) Co., Ltd. – your reliable partner for high-quality stainless steel pipes. Since our establishment in 2025, we have rapidly grown into a global supplier with an annual export value exceeding US$50 million. Our stainless steel pipes in grades 304 and 316L are manufactured with precision, accompanied by a Mill Test Report (MTR) and a 1-year warranty, ensuring traceability and peace of mind for every order. Whether you need standard sizes or customized specifications, our factory in Liaocheng, Shandong, is equipped to meet your demands efficiently.
Our pipes are widely used across industries such as oil & gas, chemical processing, food & beverage, construction, and marine engineering. The combination of 304’s excellent corrosion resistance and 316L’s enhanced resistance to chlorides and acids makes them ideal for demanding environments. With ISO9001 certification and a dedicated team of 51–100 employees, we guarantee consistent quality and on-time delivery via Qingdao port to markets worldwide, including North America, South America, Europe, Asia, Africa, and Oceania.
Key Features & Technical Specifications
| Grade | 304 (UNS S30400) / 316L (UNS S31603) |
| Size Range | Outer Diameter: 6 mm – 630 mm; Wall Thickness: 0.5 mm – 30 mm |
| Standard | ASTM A312, A213, A269, EN 10216-5, etc. (customizable) |
| Surface Finish | Pickled & Annealed, Bright Annealed, Polished (320 grit – 600 grit) |
| Length | Random (5–7 m) or Fixed (up to 12 m) as per request |
- 100% Mill Test Report Included – Every pipe comes with a detailed MTR verifying chemical composition, mechanical properties, and hydrostatic testing. This ensures full traceability and compliance with international standards.
- 1-Year Warranty – We stand behind our product quality. If any manufacturing defect is found, we will replace the pipes at no extra cost within the warranty period.
- Excellent Corrosion Resistance – 304 resists oxidation and most organic chemicals; 316L provides superior resistance to pitting and crevice corrosion in chloride environments, making it ideal for marine and chemical applications.
- High Strength & Durability – Our pipes undergo strict quality control including tensile testing, flattening test, and flaring test to ensure they meet mechanical requirements for high-pressure systems.
- Customizable Options – Need a specific size, thickness, or surface finish? We offer flexible manufacturing to match your project requirements. Contact us for special requests.
Why Choose Hemaokang Steel?
With an annual export value of US$50 million – US$100 million, we have established a strong reputation for reliability and professionalism. Our ISO9001-certified management system ensures every step from raw material sourcing to final inspection is controlled. We serve a diverse global customer base across all major regions, including Europe, Americas, Africa, and Asia. Our 51–100 skilled employees work in a modern facility in Liaocheng, Shandong – a well-known steel production hub in China.
We understand that trust is built on transparency. That’s why we provide Mill Test Reports for every batch, and we offer a 1-year warranty as our commitment to your satisfaction. Whether you are a distributor, contractor, or OEM manufacturer, we can supply consistent quality at competitive prices. Our shipping port is Qingdao, one of the busiest ports in China, ensuring fast and efficient logistics to your destination.
Frequently Asked Questions
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Q: What is the difference between 304 and 316L stainless steel pipes?
A: 304 is the most common grade, offering good corrosion resistance for general applications. 316L has added molybdenum, providing superior resistance to chlorides, acids, and pitting – ideal for marine, chemical, and high-temperature environments. Both grades are available with MTR and warranty. -
Q: Do you provide a Mill Test Report for every pipe?
A: Yes, every pipe shipment includes a comprehensive Mill Test Report (MTR) that details the chemical composition, mechanical properties, and test results. This ensures full traceability and compliance with your project specifications. -
Q: What is the warranty coverage?
A: We offer a 1-year warranty covering manufacturing defects. If any pipe fails due to material or workmanship issues within one year from delivery, we will replace it free of charge. Normal wear and tear or improper use are not covered. -
Q: Can you supply pipes in custom sizes or lengths?
A: Absolutely. We can produce pipes with outer diameters from 6 mm to 630 mm, wall thicknesses from 0.5 mm to 30 mm, and custom lengths up to 12 meters. Just send us your requirements. -
Q: What surface finishes are available?
A: Common finishes include pickled & annealed, bright annealed, and polished (up to 600 grit). We can also provide mirror polishing or special coatings upon request. -
Q: How do you ensure the quality of the pipes?
A: Our factory is ISO9001 certified. We conduct chemical analysis, tensile testing, hardness testing, flattening, flaring, hydrostatic testing, and eddy current testing (if required). Each batch is inspected before shipment. -
Q: What is the typical lead time for an order?
A: Lead time depends on quantity and specifications. For standard sizes, it is usually 15–20 days after deposit. For custom orders, it may take 25–35 days. We will confirm the schedule upon order confirmation. -
Q: Do you offer samples before bulk order?
A: Yes, we can provide small samples (e.g., 300–500 mm length) for evaluation. The sample cost is negotiable, and shipping is at your account. We can also arrange a factory visit if you prefer.
Contact Hemaokang Steel today for a competitive quotation! Our team is ready to support your stainless steel pipe needs with reliable quality, complete documentation, and a full 1-year warranty.
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