GB/T 12459  异径三通 DN 800×800×8-Sch80TR.6404-9&/�

DN 800×800×8-Sch80 TR.6404-9&/�

BL 3 1/2"-150 RF�b

BL450-10RFH40S500 Sch8F00-0)f

BL 25-150 RFch80S H1=1/RF1)

DN50-PN2.5 WN RF I

WN100A-16RF SCH40

B WN600-150 RF Sch80S

WN80A-16Tn00rfm8CH2RFtcRGB)-6RpaI9.5mp21 C-0c-1.6=25

PL65B-10RF f1=30s