Stainless Steel Tubes Manufacturer in China
Stainless steel tube is suitable for applications requiring aesthetics and precision fit, such as handrails, facades, machine frames, and instrument lines. SparkX provides welded TIG/laser mechanical tubes that meet ASTM A554/EN 10296-2, and precision seamless/cold finished tubes meet ASTM A269/A213. Standard outer diameter is typically 6-168mm, wall thickness 0.5-6mm, and length 6m or cut to length. Finish options include bright annealed inner/outer diameters, No.4/HL wire drawing, 8k mirror, and removal of internal weld seams.
We have 40 years of experience and over 400 employees. Our R&D team has over 40 people specializing in high-precision stainless steel and alloy research. We also have ISO/IATF/ISO 14001/45001/50001, and ensure you can purchase the stainless steel tubes you desire.
Commonly Used Grades of Stainless Steel Tubes
If you have any other needs or require customization, please feel free to contact us.
Widely used tube for general piping and production, 304L has lower carbon for safer welding and cleaner welds.
Containing molybdenum tubes very suitable for chloride environments, 316 improves weldability and helps maintain corrosion resistance after welding.
Economical stainless tubes with good strength and formability, ideal for indoor structures and moderate corrosion environments.
Duplex 2205 pipes have high strength and excellent pitting corrosion resistance, ideal choice for high chloride and high pressure systems.
Surfaces for Stainless Steel Tubes
For some visible part such as handrails, kiosks and facades we provide A554/EN 10296-2 welded tubes with uniform NO.4/HL grain or mirror 8K. Remove the internal weld and bright anneal to keep the interior clean. We can grain match sets by area so adjacent pieces like a continuous line on site and you will receive stainless steel with a perfect surface.
Tolerance Control of Stainless Steel Tubes
For fixtures and instrument lines, your stainless steel tube’s outer diameter, wall thickness and ovality decide your assembly time. So if you don’t want to spend so much time on assembly you should choose our stainless steel tubes. Our A267/A213 stainless steel tubes have high precision in outer diameter/wall thickness and ovality and straightness both meet the standards. It can also burr-free cut to length with ±1.0 mm and bright annealed inner diameter improves cleanliness and weldability on orbital welders. If you need we can provide eddy current/ultrasonic testing and hydrostatic testing.
Grades & Application
The most common stainless steel tube grade is 304/301L, and it’s always used for interiors, general outdoor frames and furniture tubes. 316/316L is also commonly used in areas such as coastal areas, chemical splash environments, swimming pools and food adjacent areas. 201 is suitable for low chlorine environments and low cost decorative tube. For coastal areas requiring high strength structures 2205 duplex is definitely to choice. We not only support all the grades you want to choose and also support multiple grades with unified surface and wholesale shipment.
If you care more about surface, precise outer diameter, and connection quality, please choose the tube. If you care more about pressure, please choose the pipe.
We grain match the HL direction by area and keep the mirror or BA tubes from the same polishing batch and provide a reference sample for your confirmation. Each stainless steel tube is protected with PE film and end caps, separated by partitions, and packed in edge-protected crates. For installations in coastal areas, we can perform pickling and passivation treatment on the welds and provide daily cleaning and maintenance guides to ensure your tube surface is consistent after installation.
Mainly by route (A554 welded < A269/A213 seamless), grade (201 < 304 < 316L < 2205), finish/tolerance (BA/8K, bead-removed ID, tight ovality ↑), plus OD×WT×L, tests, and packing.
