Reduced-opening 450*4mm 2:1 Ellipsoidal Dished Head S30408 For Liquid Filtration Equipment

Henan Guojiang is a leading domestic manufacturer of precision pressure vessel components, with over 12 years of experience in R&D, production and customisation of dished heads. Its products are recognised by customers in more than 10 countries. In the field of liquid filtration equipment components, it consistently adheres to high standards of reliability and precision to meet the rigorous operational requirements of the global liquid filtration industry.

• Inner Diameter: 450mm, customised for the storage tanks of small and medium-sized liquid filtration equipment, matching the structure of storage tanks for filtering media such as water and chemical solutions.
• Specification: 450×4, designed based on the working pressure (0.2MPa-0.8MPa) of liquid filtration equipment and the medium circulation characteristics.
• Material: S30408 stainless steel (equivalent to 304 stainless steel), containing 18% chromium and 8% nickel, which has excellent corrosion resistance in the environment of acid-base filtration media.

The forming process adopts cold pressing, which is the core processing method for this 2:1 standard ellipsoidal dished head. Cold pressing avoids the damage of high temperature to the corrosion resistance of the material, ensuring the head maintains good structural stability and sealing performance under long-term contact with filtration media. The development of reduced-opening head closures has minimised welding workload for clients in industries such as pressure vessels, reduced costs for components like gaskets, bolts, and flanges, and enabled smooth structural transitions in equipment.

• Inspection Protocols: 100% full inspection, including Ultrasonic Testing (UT), Liquid Penetrant Testing (PT) and dimensional accuracy testing.
• Applicable Standards: Compliant with GB/T 25198-2010, ASME BPVC Sec.VIII Div 1 and ISO 13445.
• Certifications: Hold ISO 9001:2015, ISO 14001:2015 certifications and ASME "U" Stamp approval.

As a core component of liquid filtration equipment, this 2:1 standard ellipsoidal dished head is mainly used in:

• Industrial wastewater filtration equipment
• Drinking water purification equipment
• Precision filtration equipment for chemical solutions

• Packaging: Export-grade fumigated wooden crates are used, with shock-absorbing foam and moisture-proof membranes inside to ensure the head is not damaged during transportation.
• Customisation Services: Supports customisation of inner diameter from 76mm to 10000mm and thickness from 2mm to 300mm to meet the needs of different filtration equipment.

• Strong Corrosion Resistance: Operates stably in a variety of filtration media, extending the service life of the equipment.
• Hygiene Compliance: Surface finish reaches Ra ≤ 0.8μm, meeting food-grade and industrial-grade hygiene standards.
• Good Cost-Efficiency: Optimised specification design reduces material consumption and equipment manufacturing costs.
• Wide Versatility: Compatible with mainstream domestic and foreign liquid filtration equipment models, with strong adaptability.