GB/T 12459  同心异径管 DN 40×25-3RCF8M 1049.2100-f/@4

DN 40×25-3 RCF8M 1049.2100-f/@4

WN80-300RF H1/-0.6

TH 24"-150 RFRF

WN RF 40K 15A Sch16-cr1-1.6S/F Scrf

3 FM 900-1.6/135 δ0=840

BI1300-S s=3.5,20,h.0-50 RF RF S=14m

3 M 1200-4.020δ0=10

3 M 1200-6.4 δ®ºå/S/r3b3120SR R4

3 RF 800-2.5-60ch4f.0