HG/T 20592  法兰盖 BL 500-25 G

BL 500-25 G

pl500-40 rjRFRFRammpfRF6Sc2@RF@443RF2

WN100-300 RFF SC

pl25b-6rfam

LWN 50-600 RF Sch80

WN 150-63 RF Sch160 RF

SO 700(B)-10 RF

WN25-150RF,S

SO 40B-16RF00 RF

WN20-150 RF 2.F Sch4020S0 RF SCR sch 1=00shg220δ1=8)�†â5ampampampa0J0j615 wn