GB/T 12459  弯头 DN 100-Ⅱ-690ELm2.5

DN100-Ⅱ-6 90ELm2.5

PL 50(B)-25 RF

fso20-150rfpampam80/4Fta0

HG/T20592-2009 WN15-16 RF S=3.6

pl700(b)-2.5RF

BL FF 10K 90AMF Sch40M rf40S r0 ST300 SGLT�� RFFSfInva@ SG

47021 RF1600-0.25 δ=86-4.0/100-2

bl700(B)-6RF-300 RF Sch4

WN 40-300 LFM8S

SO