Best Stainless Steel Square Bar Manufacturers and Suppliers

Our company is recognized as one of the top stainless steel square bar manufacturers and suppliers in China, providing a wide range of square stainless steel bars for industrial, architectural, and machining applications. With decades of experience in steel production, we supply high-quality square bars made from various stainless steel grades, including 304, 316, 201, 310, 410, and duplex steels.

These square bars feature excellent corrosion resistance, durability, and machinability, making them suitable for structural frames, decorative fittings, tool fabrication, construction components, and precision parts. All bars are produced with strict dimensional tolerances and undergo full quality inspections before delivery.

We support full OEM/ODM customization, including cut-to-length service, surface finishing, packaging solutions, and laser marking for brand identification. Our stainless steel square bars comply with ASTM, AISI, EN, and JIS standards, and are exported to over 30 countries globally.

Parameters

Item	Details
Product Name	Stainless Steel Bar, Stainless Bar, SS Bar
Standard	GB, AISI, ASTM,ASME,DIN, EN, JIS
Available Grades	200 Series: 201, 202300 Series: TP304, 304L, 304H, 316, 316L, 316H, 316Ti, 317, 317L, 310S, 310H, 321, 321H, 347, 347HSpecial Alloys: 904L, S31254 (254SMO)400 Series: 409, 410S, 416, 420, 430, 439, 440, 444, 446Duplex and Others: 2205, 2507, S31803, S32205, S32750, S32760, 253MA
Process	Hot Rolled, Cold Rolled
Sizes	Diameter: 0.1-500mm or customized, Length: 1-12m or customized (according to customer’s request)
Surface Treatment	NO.1, 2B, NO.4, BA, HL, Mirror
Inspection	SGS, TUV, BV, ABS, LR etc.
Application	Oil & Gas, Petroleum, Vessels, Ship Building, Water Treatment and Environmental Protection etc.

Finish	Description	Typical Thickness (mm)	Available Widths (mm)
2B	Smooth, reflective grey sheen. Most widely used.	0.55	914, 1219
BA	Bright annealed mirror-like finish.	0.70	914, 1219
DP	Brushed, non-reflective, easy to clean.	0.90	750, 914, 1219
HR	Scaled, hot-rolled finish.	1.20	750–1500
No.1	Pickled, white surface after hot-rolling.	1.50	914, 1219, 1500
HL	Continuous linear polish finish.	1.60	914, 1219, 1500
No.4	Polished with 150–180 grit.	2.00	914, 1219, 1500
No.8	Mirror finish, highly reflective.	2.50	914, 1219, 1500

Possible styles

Our stainless steel square bars are available in multiple grades such as 304, 304L, 316, 316L, 201, and 410, with sizes ranging from 5 mm to 100 mm. They can be supplied in hot-rolled, cold-drawn, or centerless-ground conditions depending on required tolerance and application. Surface finishes include black (mill), pickled, bright polished, and mirror finish. We also support custom cut lengths, chamfered edges, and packaging according to customer specifications.