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Home > Metallurgy, Mineral & Energy > Steel & Products > Steel Pipe & Tube > 1 Year Warranty Stainless Steel Tube 304 316L Seamless Welded 6m Length Standard Compliant

1 Year Warranty Stainless Steel Tube 304 316L Seamless Welded 6m Length Standard Compliant

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Product Spotlights

High-quality 304/316L stainless steel tubes in seamless and welded options, 6m standard length, compliant with ASTM norms. ISO9001 certified manufacturer with US$50M+ annual exports. Custom dimensions, surface finishes, and 1-year warranty ensure reliable performance for diverse industries.

Negotiable MOQ: 1 Ton (Price negotiable depending on order volume and customization)

Key Specifications

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Material:

Other, 304 / 316L Stainless Steel

Type:

Other, Seamless / Welded

Warranty:

1 Year

Contact Supplier Request Quote Chat Now

Hemaokang Steel (Shandong) Co., Ltd.

1Yr

Payment & Shipping

Payment Methods:

Port of Shipment:

Qingdao Port

Delivery Detail:

7 days

Product Details
Company Profile
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Material Other, 304 / 316L Stainless Steel

Type Other, Seamless / Welded

Warranty 1 Year

Length 6 meters (customizable)

Standard ASTM A269 / A312 / A213 compliant

Wall Thickness 0.5mm - 20mm (customizable)

Outer Diameter 6mm - 219mm (customizable)

Surface Finish Pickled, Annealed, Polished (customizable)

Application Petrochemical, Food, Construction, Marine

Certification ISO9001:2025

At Hemaokang Steel (Shandong) Co., Ltd., we are dedicated to delivering high-quality stainless steel solutions that meet the most demanding industrial standards. Our 1 Year Warranty Stainless Steel Tube 304 316L Seamless Welded 6m Length Standard Compliant is engineered to provide exceptional durability, corrosion resistance, and dimensional accuracy for a wide range of applications. With an annual export value of US$50 Million - US$100 Million and a team of 51–100 skilled professionals, we ensure every tube leaving our facility in Liaocheng, Shandong, meets rigorous quality control measures.

This product line is available in both seamless and welded configurations, allowing you to select the optimal balance of strength and cost for your project. Whether you require 304 stainless steel for general corrosion resistance or 316L for enhanced pitting and crevice resistance in marine environments, our tubes are produced to strict compliance with international standards such as ASTM A269, A312, and A213.

We understand that precision and reliability are non-negotiable in B2B supply chains. That is why each tube is backed by a 1-year warranty and is available in standard 6-meter lengths, with custom lengths, wall thicknesses, and diameters available upon request. Our ISO9001:2025 certified manufacturing processes ensure consistent quality, while our extensive global market reach—covering North America, South America, Europe, Asia, Africa, Oceania, and more—underpins our commitment to international service excellence.

Key Features

Dual Grade Options: Choose between 304 (18/8 stainless steel) for general use or 316L (low carbon molybdenum grade) for superior chloride resistance.
Seamless & Welded Variants: Seamless tubes offer uniform strength and integrity; welded tubes provide cost-effective performance with smooth internal surfaces.
Standard Compliant: Manufactured to meet ASTM A269, A312, A213 and other relevant international standards, ensuring compatibility with global piping systems.
Customizable Dimensions: Outer diameter from 6mm to 219mm, wall thickness from 0.5mm to 20mm, and lengths tailored to your project requirements.
Surface Finishes: Available in pickled & annealed, bright annealed, or polished finishes to suit specific aesthetic or functional needs.
1-Year Warranty: Confidence in material and workmanship defects, with responsive after-sales support.

Technical Specifications

Parameter	Value	Remarks
Material Grades	304, 304L, 316L	Low carbon (
Manufacturing Process	Seamless (hot rolled/cold drawn) or Welded (TIG/ERW)	Seamless up to 219mm OD; welded up to 6m length
Standard Length	6 meters	Custom lengths available (1–12m)
Outer Diameter Tolerance	±0.1mm – ±0.5mm (depending on size)	Tighter tolerance on request
Wall Thickness Tolerance	±0.1mm – ±0.3mm	Conforms to ASTM standards
Surface Finish	Pickled & Annealed (2B), Bright Annealed, Mirror Polish	Customizable
Mechanical Properties (304)	Tensile ≥515 MPa, Yield ≥205 MPa, Elongation ≥40%	Typical values
Mechanical Properties (316L)	Tensile ≥485 MPa, Yield ≥170 MPa, Elongation ≥40%	Low carbon ensures good weldability
Certification	ISO9001:2025	Mill test certificate included

Applications & Benefits

Oil & Gas Industry: 316L seamless tubes excel in corrosive environments, reducing maintenance frequency.
Food & Beverage Processing: 304 welded tubes with smooth internal surfaces meet hygiene standards and are easy to clean.
Chemical & Pharmaceutical: High corrosion resistance ensures product purity and long service life.
Construction & Architecture: Aesthetic polished finishes for handrails, structural supports, and decorative elements.
Marine & Offshore: 316L's molybdenum content provides exceptional resistance to saltwater corrosion.
Heat Exchangers & Boilers: Seamless tubes offer superior pressure integrity under thermal cycling.

Quality Assurance & Trust

Hemaokang Steel operates under a ISO9001:2025 quality management system, ensuring that every production batch is traceable and tested. Our 51–100 employees include experienced metallurgists and quality inspectors who perform dimensional checks, hydrostatic tests, and chemical composition analysis. We export US$50–100 million annually to over 12 major markets worldwide, including North America, Europe, Southeast Asia, and Africa, building long-term partnerships with distributors and end-users.

Each tube is supplied with a 1-year warranty covering defects in material and workmanship. Should any issue arise, our dedicated team in Liaocheng, Shandong provides prompt technical support and replacement solutions. We also offer flexible packaging (bundled, wooden crates, or as per customer requirements) and logistics arrangements to ensure on-time delivery.

Choose Hemaokang Steel for your stainless steel tube needs and experience the reliability of a certified, export-oriented manufacturer. Contact us today for a quote or to discuss your customized requirements.

Frequently Asked Questions

Q: What is the difference between 304 and 316L stainless steel tubes?
A: 304 is the standard grade with good corrosion resistance and formability. 316L contains molybdenum, offering superior resistance to chlorides and acidic environments, making it ideal for marine or chemical applications.
Q: Can I get custom lengths other than 6 meters?
A: Yes, we can supply tubes from 1 meter up to 12 meters, subject to manufacturing feasibility. Please specify your required length when ordering.
Q: Are your tubes suitable for high-pressure applications?
A: Yes, seamless tubes are designed for high-pressure service. We provide hydrostatic test reports upon request, and our tubes meet ASTM pressure rating standards.
Q: What surface finishes are available?
A: Standard finishes include pickled & annealed (2B), bright annealed, and mirror polish. Custom finishes like electro-polishing are available upon request.
Q: Do you provide mill test certificates?
A: Yes, each shipment includes a mill test certificate (MTC) confirming chemical composition, mechanical properties, and compliance with the ordered standard.
Q: How do you ensure the quality of welded tubes?
A: Our welded tubes undergo 100% visual inspection, eddy current testing, and hydrostatic pressure testing. We also perform random destructive tests to verify weld integrity.
Q: What is your minimum order quantity (MOQ)?
A: MOQ depends on size and grade. For standard sizes, MOQ is typically 1 ton. For custom sizes, please contact our sales team for a quote.
Q: How long does delivery take?
A: For standard 6m tubes, lead time is 15–20 days after order confirmation. Custom orders may require 25–35 days. We ship via sea, air, or express as per your preference.