Stainless Steel Tubes represent engineering excellence in fluid conveyance and structural applications where corrosion resistance, strength, and hygiene are paramount. As specialists in piston rods and precision components, we've mastered stainless tube manufacturing for hydraulic systems, food processing, chemical plants, and architectural applications.
Hygienic and Easy-to-Clean Surfaces: Our specially finished stainless tubes feature smooth, non-porous surfaces that resist bacterial adhesion and can be thoroughly cleaned and sterilized, meeting stringent hygienic requirements for food, beverage, pharmaceutical, and medical applications.
High Strength-to-Weight Ratio: Despite their corrosion resistance, our stainless tubes maintain excellent mechanical strength, allowing for thinner wall designs that reduce weight while maintaining pressure ratings, leading to more efficient system designs.
Temperature Resistance and Stability: Stainless steel maintains its mechanical properties across a wide temperature range, from cryogenic applications to high-temperature services up to 800°C (depending on grade), without significant degradation or scaling.
Technical Specifications and Material Data
Our stainless steel tubes comply with international standards including ASTM A269/A269M for seamless and welded tubing, ASTM A213/A213M for boiler applications, and ASTM A270/A270M for sanitary service, ensuring consistent quality and performance across applications.
Material Composition and Properties
We offer multiple stainless steel grades to address different operational requirements:
Austenitic Grades: 304/L, 316/L, 321. 310S (excellent corrosion resistance, non-magnetic)
Ferritic Grades: 430. 409. 439 (moderate corrosion resistance, magnetic)
Martensitic Grades: 420. 410 (high strength, moderate corrosion resistance, magnetic)
The chemical composition of our primary stainless steel grades typically includes:
Dimensional Specifications and Tolerances
Our manufacturing capabilities deliver precise dimensional control:
Diameter Range: 6mm to 300mm OD, with wall thickness from 0.5mm to 12mm
Diameter Tolerance:
Seamless: ±0.10mm to ±0.40mm depending on diameter
Welded & Drawn: ±0.05mm to ±0.25mm depending on diameter
Wall Thickness Tolerance: ±7.5% to ±10% depending on manufacturing method
Straightness: ≤0.5mm per meter for standard tubes, ≤0.2mm per meter for precision applications
Roundness: ≤70% of diameter tolerance
Surface Roughness:
Standard finish: Ra ≤ 0.8 μm
Electropolished finish: Ra ≤ 0.4 μm (available upon request)
Length: Standard lengths up to 12 meters, with custom cutting available
The manufacturing methodology varies by application requirements:
Welded Tubes: Strip preparation → forming → welding (TIG, plasma, laser) → heat treatment → sizing → finishing → testing
Seamless Tubes: Round billet → heating → piercing → elongation → sizing → heat treatment → finishing → testing
Sanitary Tubes: Additional processes including solution annealing, pickling, passivation, and specialized cleaning
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