Product Name: Petal Fabrication Hemispherical Ends Model NO.: HHA Material: Ss/CS/Clad Plates Type: Connection Standard: International Customized: Customized Color: Fixed Certification: ISO, TUV Dia: 9000 Trademark: Hokkai Transport Package: Steel frame Specification: HHA Origin: China HS Code: 73269019 Product Description Hokkai can form hemispherical heads by cold press, hot press, and petal fabrication.Nommaly Hemispherical heads by Cold press with thin plates is for food industry, Hot press and petal fabrication is for oil*gas industry.Max dia 2000mm is for cold press of our cold press machine, andmax dia 5000mm is for hot press for our hot press machine.for above two photos, one is petal fabrication for heavy thicker plates and weld together after press petals,finally Solution heat treatment is requried as customer requriementat abve 1000degreeOur company are ASME U&U2 stamp holder and can provide dished heads as PED/NB/GB/ASME standard.The dished heads for oil&gas industry is always requried ASME VIII-1 U stamp and ASME VIII-2 U2 stampThe below process are our normal way to form dished heads. We can quote and form dished heads after you gave us the details as the below process1, Hokkai Group2,YIXING HOKKAI * Established in Mar 1994 * Start to produce in Oct 1995 * Became 100% Japanese owed in Aug 2000 * Purpose: based on the HIW accumulative head plates experience for kinds of industries, service to the development of chinese industry * Investor: Hokkai Iron Works 89.9%, Hokkai Limited 10.1% * Total investment: USD26.3million; registered captial: 12million 3, YIXING HOKKAI DISHED ENDS ORDER PROCESS 4, YIXING HOKKAI PRODUCTION PROCESS 5, YIXING HOKKAI QC SYSTEM