Stainless Steel Welded Tube 13.5-323.9mm OD for Gas/Oil Transport and Sewage Systems

• General service industries (petroleum, food, chemical, paper, fertilizer, fabric, aviation, nuclear)
• Fluid, gas and oil transport systems
• Pressure and heat transmission equipment
• Construction and architectural ornamentation
• Boiler heat exchangers and thermal systems
• Decorative applications (road lamp facilities, bridge handrails, expressway railings, bus stops, airports, gymnasiums)
• Automotive components, medical equipment, building materials, food processing equipment

Eddy Current or Hydraulic Testing performed on all products to ensure structural integrity and leak-proof performance.

Bright Annealed process enhances corrosion resistance and improves mechanical properties.

ISO 9001 & PED97/23/EC certified with 100% traceability. Material test reports (EN 10204/3.1B) accompany every shipment.

• Each lot of raw materials tested by spectrometer before storage
• 100% PMI testing on mother pipe to ensure correct material selection
• 100% PMI testing on finished pipe to verify grade accuracy

1. Incoming Raw Material Inspection
2. Raw Material Segregation to prevent steel grade mix-up
3. Heating and Hammering End for Cold Drawing
4. Cold Drawing and Cold Rolling with online inspection
5. Heat Treatment (+A, +SRA, +LC, +N, Q+T)
6. Straightening, Cutting to specified length, Finished Measuring Inspection
7. Mechanical Testing in certified labs (Tensile Strength, Yield Strength, Elongation, Hardness, Impact, Microstructure)
8. Packing and Stocking with full documentation