ASTM A213 TP316L Stainless Steel Seamless Tube Heat Exchanger Tube 100% HT

ASTM A213 TP316L Stainless Steel Seamless Tube for Boiler and Heat Exchanger

ASTM A213 / ASME SA213 specification is for ferritic steel TP444, austenitic stainless steel TP304/L/H/N, TP310S/H, TP316L/H/Ti, TP321/H, TP347/H ... and alloy steel T5, T9, T11, T12, T22, T91, T92 ... Alloy 800/H tubing. Due to excellent resistance and superior properties, these tubes are suitable for power generation, petrochemical, and various industrial applications. The end user should choose a proper material according to the using environment, cost and fabrication.

Pickling and bright annealing are two different surface treatment processes for materials like the ASTM A213 TP316L seamless tube, and they have distinct effects on the properties of the material:

1. Pickling:

   • Process: This involves treating the metal with acid to remove oxide scale, rust, and other impurities from the surface.
   • Appearance: The finish is generally dull and may have a somewhat rough texture after pickling.
   • Influence on Properties: Pickling primarily affects the surface condition by cleaning the metal. It can remove any existing oxidation and enhance the corrosion resistance of the stainless steel. However, it does not significantly alter the mechanical properties of the tube.

2. Bright Annealing:

   • Process: This is a heat treatment process performed in a controlled atmosphere (usually a vacuum or inert gas) to reduce the risk of oxidation while heating the material.
   • Appearance: The finish is bright and shiny, resulting in a smooth surface.
   • Influence on Properties: Bright annealing not only cleans the surface but also helps to relieve stresses in the material and can enhance the structural properties, such as improving ductility and toughness. It generally leads to a better corrosion resistance due to the maintenance of the protective oxide layer.

Chemical Composition of ASTM A213 TP316L Stainless Steel seamless tube

Mechanical Properties of ASTM A213 TP316L Stainless Steel seamless tube

Quenching Process

After solution annealing, the tube is usually quenched in water to rapidly cool it down. This is important to prevent carbide precipitation which can lead to decreased corrosion resistance.

Other Available Specifications

• Hydraulic Systems
• Food and Chemical Processing
• Marine Environments
• Pharmaceutical and Food Industries
• Boiler
• Heat Exchanger
• HVAC System