External Polished & Brushed Necked Elliptical Head With Bottom Opening For Cryogenic Storage Tank Equipment

As a key enterprise in China's precision pressure vessel component industry, Henan Guojiang has over 12 years of experience in R&D, production, and customisation of one-piece elliptical heads. Our products are exported to more than 10 countries worldwide, meeting the strict quality requirements of the cryogenic industry and providing reliable core component solutions for cryogenic storage tank equipment.

• Inner Diameter: 1000mm (customizable for adaptive sizes) - Suitable for various small and medium-sized cryogenic storage tank equipment
• Nominal Thickness: 5mm (basic customised version, expandable to 1mm-300mm) - Compatible with working pressure range of 0.1MPa-10MPa and cryogenic media
• Material: 304L stainless steel - Each batch is accompanied by a complete Material Test Certificate (MTC)
• Material Composition: 18%-20% chromium, 8%-12% nickel - Possessing excellent low-temperature toughness and corrosion resistance
• Surface Treatment Standard: External polished & brushed (roughness ≤0.8μm), internal polishing (roughness ≤0.4μm) - Meeting the cleanliness and medium compatibility requirements of cryogenic equipment

Manufactured via cold forming technology to fully retain the low-temperature toughness and weldability of 304L stainless steel. Advanced hydraulic forming equipment ensures compliance with GB/T 25198 and ASME standards, featuring a smooth and uniform surface without local stress concentration, precise bottom opening, and a necked structure designed to match the welding needs of storage tank shells.

• Inspection Process: 100% full inspection, including ultrasonic testing (UT), penetrant testing (PT), 3D laser scanning, and surface roughness detection
• Compliance Standards: GB/T 25198-2023, ASME BPVC Section VIII Division 1, PED 2014/68/EU directives
• Certifications: ISO 9001:2015, ISO 14001:2015, ASME "U" Stamp approval

Specifically designed for cryogenic storage tank equipment, applicable to:

• Cryogenic liquid (such as liquid nitrogen, liquid oxygen, liquefied natural gas) storage tanks
• Necked components of cryogenic medium transfer storage tanks
• Core pressure-bearing components of industrial cryogenic storage systems

• Export-grade fumigated wooden cases for single-unit precision packaging
• Steel pallets with a load capacity of ≥500kg for bulk orders

• Inner diameter customisation: 60mm-10000mm (including adaptive adjustment of opening positions)
• Thickness customisation: 1mm-300mm
• Free finite element analysis (FEA) stress calculation service
• 2D/3D drawing design support
• Sample service: 18 working-day delivery cycle