Top Round Seamless Tubes Manufacturers and Suppliers

As a professional supplier of round seamless tubes, we offer a wide range of stainless steel and alloy-grade seamless tubing solutions for demanding applications. Our round seamless tubes are widely used in heat exchangers, pressure vessels, pipelines, petrochemical systems, and industrial equipment. We support customized dimensions, finishes, and mechanical properties to meet the unique requirements of global buyers.

With advanced production technology, tight tolerance control, and certifications such as ISO and ASTM compliance, we are committed to delivering reliable and high-performance seamless tubes to your projects.

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

Our round seamless tubes are primarily offered in circular cross-section, manufactured using hot rolling or cold drawing methods. Depending on the usage, the tubes can be delivered with plain, beveled, or threaded ends. Surface finishes available include pickled, polished, or annealed. Custom wall thicknesses and lengths are supported for industrial or structural-grade requirements.