1.Elliptical headsmust be protected from rain and should never be stored outdoors.

2. Avoid impact, scratches, or any surface abrasions on elliptical heads.

3. Direct contact with carbon steel must be prevented to avoid iron ion contamination.

4. When pickling stainless steel heads, avoid using reducing acids such as hydrochloric acid.

5. During hydrostatic testing, ensure the chloride ion (Cl⁻) content in water does not exceed 25 mg/L.After testing, promptly dry the surface to prevent corrosion.

6. Avoid forced fit-up during welding assembly.Structural design must minimize excessive restraint stress to prevent cracking.