HG/T 20592  法兰盖 BL 500-10 RF

BL500- 10RF

3 RF 900-1.6/57-145

WN 200(B)-100 RF S=12

3FM600-2.5

BL 50-300 RF

3 RF 900-1.6

bl20-150Rf

WN 1"-2500 RJ Sch40S

PL600b-6RF

3 FM 550-2.55(b)-PL RF Ⅱ�@FF5RF…mpas5 RJ40���600 RF Sch600@4400b-1RF0sc@S/2@Fj@5 RFamp;amp;amp;amp;