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Help CenterStainless Steel Pipe With Mill Test Report 304 316L Seamless Welded 1 Year Warranty
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As a professional manufacturer from Hemaokang Steel (Shandong) Co., Ltd., we are proud to present our premium Stainless Steel Pipe with Mill Test Report in grades 304 and 316L, available in both seamless and welded options. With an annual export value exceeding US$50 million and a dedicated team of 51–100 employees, we ensure every pipe meets stringent quality standards backed by ISO9001 certification and a comprehensive 1-year warranty. Our products are trusted by clients across North America, Europe, Asia, Africa, and Oceania, making us a reliable partner for your piping needs.
This stainless steel pipe is designed to deliver exceptional durability, corrosion resistance, and dimensional accuracy in demanding industrial environments. Whether you require seamless construction for high-pressure systems or welded pipes for cost-effective solutions, our mill test report provides full traceability of chemical composition and mechanical properties, giving you complete confidence in every batch.
Key Features & Technical Specifications
- Material Grades: 304 (UNS S30400) and 316L (UNS S31603) – low carbon version for enhanced weldability and corrosion resistance in chloride environments.
- Manufacturing Types: Seamless (cold drawn or hot finished) and Welded (ERW or EFW) – both available with full traceability.
- Dimensional Range: Outer diameter from 1/2" to 24" (DN15 to DN600), wall thickness from SCH10 to SCH160, and custom lengths up to 12 meters.
- Standards Compliance: ASTM A312, A269, A213, and other international norms – mill test report included for each heat number.
- Surface Finish: Pickled and annealed as standard; optional polishing (180 grit to 400 grit) or bright annealing upon request.
- Warranty: 1-year warranty against manufacturing defects, covering both material and workmanship.
- Certifications: ISO9001:2015 quality management system – mill test reports are issued per EN 10204 3.1 or equivalent.
| Parameter | 304 Grade | 316L Grade |
|---|---|---|
| Chemical Composition | Cr 18-20%, Ni 8-10.5% | Cr 16-18%, Ni 10-14%, Mo 2-3% |
| Tensile Strength (min) | 515 MPa | 485 MPa |
| Yield Strength (min) | 205 MPa | 170 MPa |
| Elongation (min) | 35% | 40% |
| Corrosion Resistance | Good in general environments | Excellent in chloride & acidic media |
Product Advantages & Customer Benefits
- Full Traceability: Every pipe comes with a mill test report detailing chemical analysis, mechanical properties, and hydrostatic test results – perfect for quality-sensitive projects.
- Dual Grade Availability: Choose 304 for general applications or 316L for superior resistance to pitting and crevice corrosion in marine or chemical environments.
- Customizable Dimensions: We offer a wide range of diameters, wall thicknesses, and lengths to suit your specific requirements – no minimum order quantity restrictions.
- Seamless & Welded Options: Seamless pipes are ideal for high-pressure and high-temperature systems; welded pipes provide a cost-effective alternative with consistent quality.
- Reliable Warranty: Our 1-year warranty covers any manufacturing defects, ensuring peace of mind for your investment.
- Global Logistics: With annual export value of US$50–100 million, we have established efficient shipping routes to all major ports worldwide, ensuring timely delivery.
Trust & Credibility
Hemaokang Steel (Shandong) Co., Ltd. has been a trusted supplier since 2025, serving a diverse global clientele. With ISO9001 certification and a team of over 50 experienced professionals, we maintain strict quality control from raw material procurement to final inspection. Our mill test reports are issued with every shipment, ensuring full compliance with international standards. We have successfully supplied stainless steel pipes for projects in oil & gas, food processing, pharmaceuticals, and construction across North America, South America, Europe, Southeast Asia, Africa, Oceania, the Middle East, and Asia. Our annual export value of US$50–100 million reflects our commitment to excellence and customer satisfaction.
We invite you to experience the quality and reliability of our stainless steel pipes. Contact us today for a quote, sample, or technical consultation. Our team is ready to provide customized solutions tailored to your project needs.
Frequently Asked Questions (FAQ)
-
What is the difference between 304 and 316L stainless steel pipe?
304 is a general-purpose grade with good corrosion resistance, while 316L contains molybdenum for enhanced resistance to chlorides and acids, making it suitable for marine and chemical applications. -
Do you provide a mill test report with every order?
Yes, a mill test report (MTR) compliant with EN 10204 3.1 or equivalent is included for each heat number, covering chemical composition, mechanical properties, and test results. -
What is the warranty coverage?
Our 1-year warranty covers manufacturing defects in material and workmanship. It does not cover damage due to improper installation, misuse, or external factors. -
Can I order custom sizes, such as non-standard diameters or lengths?
Absolutely. We offer customizable outer diameters, wall thicknesses, and lengths. Please provide your specific requirements, and we will produce accordingly. -
What is the minimum order quantity (MOQ)?
There is no strict MOQ for standard sizes. For custom specifications, we recommend a minimum quantity to optimize production; please consult our sales team for details. -
How are the pipes packaged for export?
Pipes are packed in bundles with steel strapping, protected by plastic caps or woven bags, and suitable for sea or air freight. Custom packing is available upon request. -
Can you supply both seamless and welded pipes in the same order?
Yes, we can supply mixed types in a single order. Please specify the quantity and dimensions for each type. -
What certifications do you hold?
We are ISO9001 certified. Our mill test reports provide traceability to international standards like ASTM, ASME, and EN.
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