347 stainless steel welded pipe

Advanced Manufacturing Process

Our 347 stainless steel welded pipe production employs three sophisticated methods:

• Electric Resistance Welding (ERW)
• Fusion Welding (EFW)
• Double Submerged Arc Welding (DSAW)

The manufacturing process begins with premium slabs or billets, followed by precision hot or cold rolling. Each 347 stainless steel welded pipe undergoes:

• Careful seam welding
• Surface scarfing for uniform O.D. and I.D.
• Heat treatment for weld zone optimization
• Rigorous quality control
• Dimensional accuracy verification

Superior Properties of 347 Stainless Steel Welded Pipe

As a columbium-stabilized austenitic stainless steel, our 347 stainless steel welded pipe offers exceptional characteristics:

• Superior corrosion resistance, surpassing 321 grade in oxidizing conditions
• Excellent intergranular corrosion resistance at 800-1500°F (427-816°C)
• Outstanding oxidation resistance
• Enhanced creep strength up to 1500°F (816°C)
• Excellent low-temperature toughness
• Superior weldability

Manufacturing Benefits and Applications

Our stainless steel welded pipe in grade 347 provides distinct advantages:

• Tighter dimensional tolerances compared to seamless pipes
• Cost-effective production
• Versatile engineering applications
• Standard shop fabrication compatibility
• Multiple finish options
• Comprehensive size range

Quality Specifications

Each 347 stainless steel welded pipe meets:

• UNS S34700 requirements
• ASTM A312 standards
• ASME pressure vessel codes
• Industry-specific certifications

For specialized high-temperature applications, we also offer 347H (UNS S34709) with enhanced carbon content (0.04-0.10%) for superior creep resistance above 1000°F (537°C).