20x20mm Stainless Steel Square Tube
Winsco manufactures 20x20mm welded stainless steel square tubes in AISI 201, 304 and 316 grades for architectural decoration, railings, furniture and custom metal fabrication. Wall thickness, length, polishing and PVD color can be produced according to the confirmed order requirements.
As a stainless steel tube manufacturer and exporter in Foshan, China, Winsco supports distributors, fabricators, contractors and project buyers with flexible customization, production inspection and export-ready packaging.
Product Specifications
| Item |
Specification |
| Product Name |
20x20mm Stainless Steel Square Tube |
| Material Grade |
AISI 201, 304, 304L, 316 and 316L |
| Outside Dimension |
20 × 20 mm |
| Wall Thickness |
0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.2, 1.5, 2.0, 2.5 or 3.0 mm; subject to grade and order confirmation |
| Standard |
ASTM A554 or customer-specified requirements |
| Surface Finish |
2B, BA, No.4, satin, brushed, hairline, mirror polished and PVD color |
| Polishing Options |
180, 240, 320, 400, 600 and 800 grit |
| Length |
2 m, 3 m, 5.85 m, 6 m or customized |
| Production Process |
Forming, TIG welding, sizing, straightening, polishing and inspection |
| Additional Processing |
Cutting, drilling, laser cutting and custom fabrication |
| Documentation |
Material Test Certificate EN 10204 3.1 available upon request |
| Place of Origin |
Foshan, Guangdong, China |
Available combinations depend on the selected grade, wall thickness, finish and order quantity. Final specifications are confirmed in the quotation or approved sample.
Available Stainless Steel Grades
AISI 201 Stainless Steel
A cost-effective choice for indoor decoration, furniture, display racks and projects used in relatively dry environments.
AISI 304 Stainless Steel
A widely selected grade offering a practical balance of corrosion resistance, appearance and fabrication performance for railings, furniture and architectural decoration.
AISI 316 Stainless Steel
Provides improved corrosion resistance for coastal, humid and more demanding environments. The correct grade should be selected according to the actual service conditions.
Why Choose Winsco Stainless Steel Square Tubes?
Reliable Raw Materials
Stainless steel coils and strips are selected according to the confirmed material grade and order requirements. Material documentation can be supplied when requested.
Consistent Forming and Welding
Controlled forming and TIG welding help maintain the square profile, straightness and consistent weld seam of the finished tube.
Multiple Surface and Processing Options
Satin, hairline, mirror and PVD-colored finishes are available. Cutting, drilling, laser processing, customized labels and buyer-specific packaging can also be arranged.
Quality Inspection Before Shipment
Dimensions, wall thickness, length, straightness, weld seam and visible surface condition are inspected according to the confirmed order specification.
23+ Years of Manufacturing and Export Experience
Winsco supports international distributors, fabricators and project buyers with product selection, customized manufacturing, inspection support and export-ready service.
Production and Quality Control
- Raw material selection and verification
- Coil or strip slitting
- Square tube forming and TIG welding
- Weld-seam treatment, sizing and straightening
- Surface polishing or PVD color processing
- Dimensional and surface inspection
- Protective packing, labeling and shipment
Third-party inspection can be arranged before shipment when required and agreed in the order.
Applications of 20x20mm Stainless Steel Square Tube
The compact 20x20mm square profile combines a clean appearance with flexible fabrication. Typical applications include:
- Stair railings and balcony components
- Furniture frames, legs, shelves and display racks
- Interior screens, partitions and decorative metalwork
- Doors, gates and light frames
- Kitchen and bathroom fixtures
- Commercial display systems
- Customized fabricated components
The appropriate grade and wall thickness should be selected according to the environment, load and fabrication requirements of the project.
Packaging and Shipping
Each tube can be protected with a plastic sleeve or protective film, packed in woven bags and secured in export bundles. Wooden cases, reinforced packing, customized labels and buyer-specific packaging are available upon request.
Frequently Asked Questions
Which material grade should I choose?
AISI 201 is generally selected for cost-sensitive indoor applications. AISI 304 suits many decorative and general fabrication projects. AISI 316 offers improved resistance for coastal, humid or more demanding environments.
Can the wall thickness and length be customized?
Yes. Available combinations depend on the grade, finish and order quantity. Please provide the required wall thickness and length for production confirmation.
Can you supply mirror-polished or colored square tubes?
Yes. Satin, hairline, mirror-polished and PVD-colored finishes are available. A finish or color sample can be confirmed before mass production.
Can you cut or process the tubes?
Yes. Short-length cutting, drilling, laser cutting and customized fabrication can be arranged according to drawings or approved samples.
What information is required for a quotation?
Please provide the grade, 20x20mm size, wall thickness, length, surface finish, quantity, application and destination port or delivery address.
Request a Quote
Looking for a reliable 20x20mm stainless steel square tube manufacturer in China? Send Winsco your required grade, thickness, finish, length, quantity and destination. Our team will prepare a suitable production solution and quotation for your project.
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