ASME 316L Stainless Steel Ellipsoidal Dished Head with Reduced Opening for Corrosion Resistant Tank Applications

Henan Guojiang Precision Formed Head Co., Ltd. brings over 12 years of expertise in pressure vessel components, earning a strong industry reputation. Enterprises trust our dished tank heads in more than 10 countries worldwide.

• Model Specification: ASME Standard 316L Stainless Steel Ellipsoidal Dished Head with Reduced Opening (for Tanks), featuring high strength and strong corrosion resistance, suitable for medium and large-sized pressure-bearing equipment.
• Dimension Details: Standard inner diameter customizable on demand; reduced opening size supports 80mm-250mm personalised adjustment, compatible with medium and large storage tanks and pressure vessels in chemical, new energy and other fields.
• Thickness Specification: Nominal thickness customizable (starting from 6mm as standard), optimising load-bearing design while ensuring structural stability, applicable for working pressures of 0.2MPa-12MPa.

• Core Material: 316L stainless steel, with strong acid and alkali corrosion resistance, suitable for complex medium working conditions.
• Optional Materials: Carbon steel (Q235B, Q345R) and duplex steel (S31803) available for customisation to meet diverse scenario needs.
• Quality Assurance: All materials are sourced from certified suppliers with complete Material Test Certificates (MTC).

• Superior Corrosion Resistance: A dense oxide film forms on the surface, resisting erosion from atmosphere, acid and alkali media, and extending service life.
• Integrated Reduced Opening Design: Eliminates secondary welding of pipe connections, reduces leakage risk, and cuts costs of connectors such as gaskets, bolts and flanges.
• Stable and Durable Structure: The elliptical structure evenly distributes internal pressure, enhances overall pressure resistance, and enables a smooth transition of the equipment structure.
• Welding Cost Saving: Significantly reduces welding workload, lowering construction cycle and labour costs.

• Cold Forming: Suitable for 316L stainless steel plates with a thickness ≤11mm, maintaining the original mechanical properties of the material.
• Hot Forming: For materials with thickness ≥12mm or high-strength alloys, heating temperature is controlled at 850℃-1050℃.

• Chemical Polishing: Achieves surface roughness Ra ≤ 1.6μm, reducing medium adhesion.
• Electrolytic Polishing: Creates a mirror effect (Ra ≤ 0.8μm), improving surface finish.
• Passivation Treatment: Strengthens the surface oxide film, enhancing resistance to harsh media.

• Applicable Standards and Certifications: Complies with ISO 9001:2015 Quality Management System, ASME "U" Stamp and PED Module H certification standards.
• Application Scenarios: Widely used in medium and large storage tanks, pressure vessels and other pressure-bearing equipment in chemical, new energy and other fields.