stainless steel welded pipe

Understanding Stainless Steel Welded Pipe Properties and Applications

SS316/316L tubes and pipes are industry leaders for medium to long-term applications, especially in refineries and offshore oil & gas projects. When considering stainless steel welded pipe options, these materials offer exceptional versatility in both appearance and function, making them suitable for indoor and outdoor installations.

Key properties include:

• Superior corrosion resistance against acids, chemicals, and saline solutions
• High tensile strength and durability
• Excellent heat resistance without structural compromise
• Versatile finishing options for different aesthetic requirements

TIG Welding Stainless Steel Pipe: Material Composition and Specifications

The material composition plays a crucial role, especially when TIG welding stainless steel pipe components:

• SS316: Maximum carbon content of 0.08%
• SS316L: Maximum carbon content of 0.03%

The lower carbon content in SS316L provides:

• Enhanced ductility when annealed
• Superior corrosion resistance post-welding
• Better weldability with minimal carbide precipitation
• Ideal characteristics for projects requiring extensive welding

Surface Finishes and Industry Standards

Available surface finishes include:

1. Annealed and Pickled (AP) seamless tube
   • Matt surface finish
   • Enhanced workability
   • Common in industrial applications
2. Polished 320 grit
   • Refined appearance
   • Suitable for visible installations
3. Bright annealed
   • Shiny surface finish
   • Preferred for aesthetic applications
   • Popular in OEM manufacturing

Molybdenum Content and Tolerance Specifications

The tubes are manufactured to either MO2.0 or MO2.5 standards:

• MO2.5: Minimum 2.5% Molybdenum content for enhanced corrosion resistance
• Follows ASTM A213/A269 standard specifications
• Critical for proper installation with compression end fittings
• Particularly suited for petrochemical, oil and gas, and marine applications

The stainless steel welded pipe specifications must meet strict tolerance requirements to ensure proper fitting installation and long-term performance, especially in corrosive environments where TIG welding stainless steel pipe connections are necessary.