????:D20/DN15-D225/DN200????:??×??????:????(DIN)????:PN16,PN10
????:D20/DN15-D500/DN475????:??????:????(DIN)????:PN16,PN10,PN6,PN4
????:D20/DN15-D225/DN200????:????(DIN)????:PN16,PN10