ss manifold passing high pressure 1200psi test

How to make sure stainless steel manifold with several welded ports to pass 1200psi anti-leak test?

For the stainless steel manifold with several welded ports, if want to pass 1200psi test, the below points maybe are helpful to you.

1. Material Selection:
Opt for stainless steel grade with high strength and corrosion resistance, such as 316 stainless steel or duplex stainless steel.
Ensure the material used is compatible with high-pressure applications and can maintain integrity under extreme conditions.
2. TIG (Tungsten Inert Gas) Welding:
TIG welding is ideal for high-pressure applications due to its precision and control.
Utilize this process for welding the ports onto the manifold, ensuring a strong and durable connection.
3. Weld Joint Preparation:
Use beveled edges to prepare the joint for welding, allowing for adequate penetration and fusion of the materials.
Ensure the surfaces to be welded are free from contaminants, resulting in a clean, strong weld.
4. Quality Control Measures:
Implement rigorous quality control throughout the welding process.
Non-destructive testing methods like X-rays, ultrasonic testing, or dye penetrant inspection should be performed to detect any imperfections or defects in the welds.
5. Robotic Welding or Skilled Welders:
Consider using robotic welding for precise and consistent welds, ensuring uniformity and strength in the welds.
Skilled welders with expertise in TIG welding can also achieve high-quality welds on the manifold, provided they maintain consistent parameters and quality standards.
6. Post-Weld Treatment:
Stress-relieving the welded components can help in minimizing residual stresses that could compromise the material's strength and integrity.
Consider applying a post-weld treatment or passivation to enhance the corrosion resistance of the manifold.
7. Compliance with Standards:
Ensure adherence to relevant industry standards and regulations, such as ASME, ASTM, or ISO, to guarantee the manifold's reliability and safety under high-pressure conditions.