309 Stainless Steel Tube Supplier | High-Quality Standard Stainless Steel Tube Manufacturer

High-Quality Standard Stainless Steel Tube Manufacturers and Suppliers

309 stainless steel tube is an austenitic stainless steel known for its exceptional resistance to high temperatures and oxidation. With higher levels of chromium and nickel compared to 304, this alloy provides enhanced strength and durability in demanding environments, such as heat treatment equipment, furnaces, kilns, and exhaust systems.

As a trusted supplier of high-quality standard stainless steel tubes, we offer 309 tubes in a wide range of outer diameters, wall thicknesses, and surface finishes. Our production processes follow global standards such as ASTM, EN, and JIS, and we support both seamless and welded options. OEM and ODM customizations are available for industrial applications requiring thermal stability and corrosion resistance.

Parameters

Item	Details
Product Name	Stainless Steel Pipe, Stainless Pipe, SS Pipe
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	Thickness: 0.24–3mm, Outer diameter: 8–219mm, Length: 1–6m (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

309 stainless steel tubes are available in round, square, and rectangular configurations. Customers can choose from surface finishes including 2B, No.4, BA, and mirror polish depending on the intended use. Both hot rolled and cold drawn processing methods are available, offering tight tolerance control and smooth internal surfaces suitable for mechanical, thermal, and structural use cases.