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Polished Stainless Steel Square Pipe

Square tube precision polished to a mirror-like finish. Uniform surface, no orange peel. Ideal for handrails, display racks, furniture, and interior trim.
Stock sizes from 15×15mm to 400×400mm. Sharp or radius corners available. Wall thickness 1.0–8.0mm. Custom lengths accepted.
Surface protected with peelable film. Laser cutting and end forming available upon request. Ready for installation.

Common Materials

Series	Grade	Description
300 Series	304, 304L, 316, 316L	Decorative and structural applications, fine brushed finish
200 Series	201	Economical decorative option

Applicable Standards

Type	Standard	Title	Application
Domestic	YB/T 5363-2016	Welded Stainless Steel Tubes for Decoration	Preferred standard for decorative applications
	GB/T 12770-2025	Welded Stainless Steel Tubes for Mechanical Structures	Structural applications
	JG/T 539-2017	Stainless Steel Welded Tubes for Construction	Architectural decorative applications
International	ASTM A554	Standard Specification for Welded Stainless Steel Mechanical Tubing	Mechanical and decorative applications
	EN 10296-2	Welded Steel Tubes for Mechanical and General Engineering Purposes	European standard
	JIS G3446	Stainless Steel Tubes for Machine Structures	Japanese standard

Surface Roughness Grades (YB/T 5363-2016)

Grade	Ra Value	Description
Standard Grade	Not specified	General decorative applications
Higher Grade	≤0.8μm	Higher surface quality requirements
Premium Grade	≤0.4μm	Mirror finish and high-gloss brushed finish

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