Bright Square Steel Tube

Bright square steel tube is square steel tubes processed by cold drawing, cold rolling, or precision grinding, resulting in a mirror-like surface, precise dimensions, and excellent mechanical properties. Compared to ordinary hot-rolled square tubes, bright square tubes can be directly used in high-requirement mechanical structures, appearance parts, or precision assemblies without secondary processing, and are widely used in high-end manufacturing, automation equipment, the automotive industry, and modern furniture worldwide.

 Ultra-high Surface Quality

Bright Square Steel Tube has a surface roughness Ra of 0.2–1.6 μm, is free of oxide scale and rust, and has a silvery-white metallic luster. It can be directly electroplated, sprayed, or used bare.

 Precision Dimensional Control
Bright Square Steel Tube has a side length tolerance of ±0.05mm, uniform wall thickness, and consistent corner forming, meeting high-precision assembly requirements.

 Excellent Mechanical Properties

Tensile strength 400–700 MPa, balancing strength and toughness, supporting heat treatments such as tempering and carburizing.

 Diverse Materials
Available in carbon steel 10, 20, 45, Q235B, Q345B; alloy steel 20Cr, 40Cr; stainless steel 304, 316, etc.

  Delivery Without Machining

Eliminates post-processing steps such as polishing and pickling, reducing customer production costs.

 Compliant with international standards

Complies with GB/T 3639, DIN 2391 / EN 10305, ASTM A513 / ASTM A519, and other standards.

 Hydraulic and Pneumatic Systems: Cylinders, Piston Rods, Guide Sleeves

 Automotive and Motorcycle: Frames, Roll Brakes, Transmission Components

 Industrial Automation: Linear Guide Supports, Robot Structural Components

 High-End Furniture and Exhibition Equipment: Office Desk Legs, Display Shelves, Armrests

 Precision Machinery: Spindles, Support Columns, Connecting Frames

As a leading precision steel tube manufacturer in China, we offer:

✅ Factory direct pricing, no middlemen markups

✅ ISO 9001 certified production system, MTR included with every batch

✅ Flexible customization: non-standard sizes, special tolerances, custom packaging

✅ International certification support: complete documentation including SGS, RoHS, EN 10204 3.1, etc.

Whether you are a machinery manufacturer, trader, or system integrator, we can provide you with high-quality, cost-effective, and fast-delivery bright square steel tube solutions.