GB/T 12459  弯头 DN 550-Ⅱ-690ES

DN 550-Ⅱ-6 90ES

SP-1

WN25-300T30-6s

PL132-16RFSF RFRï؟½@4ï؟½o@

DN100/PN16/12A80i=241LRF）-0.6h106 RRF S=5

WN 80(B)-25 RF S=12

3 M350-1.60(N1F0112bsp@F50

WN 32(B)-10 RF S=4

WN 65-1500 RF S=16

WN 8"-300 RF Sch40S6FFFF S/F71650(B)b=2S=10=1