Stainless Steel Hollow Tube Specifications

Stainless steel hollow tubes are widely used in the industrial and construction fields, mainly for conveying fluids and as structural materials.

1. Classification by outer diameter

The outer diameter of stainless steel hollow tubes is usually expressed in millimeters (mm), and common specifications are:

Small diameter tube: outer diameter 6mm-76mm

Medium diameter tube: outer diameter 76mm-219mm

Large diameter tube: outer diameter 219mm or more

2. Classification by wall thickness

The wall thickness of stainless steel hollow tubes is also an important specification, and common wall thicknesses are:

Thin-walled tube: wall thickness less than 2mm

Medium-walled tube: wall thickness 2mm-20mm

Thick-walled tube: wall thickness greater than 20mm

3. Classification by standards

The production and quality requirements of stainless steel hollow tubes usually meet the following common standards:

ASTM A312: Seamless and welded stainless steel hollow tubes

ASTM A213: Seamless stainless steel hollow tubes for boilers, superheaters and heat exchangers

ASTM A269: Seamless and welded stainless steel hollow tubes for general use

GB/T 14976: China National Standard, Stainless Steel Seamless Hollow Pipes for Fluid Transportation

These specifications and classifications can help you better select and use stainless steel hollow pipes to meet different application requirements. If you need more detailed information or special specifications of stainless steel hollow pipes, you can leave a message to contact us.