HG/T 20592  法兰盖 BL 300-40 FF0/u00a6

BL300-40FF0/u00a6

PL 25(B)-6 RF

PL 250(B)-10 RF

WN 150-300 RF Sch40S

PL 250(B)-16 RF

PWN700(B)-16 RF

BL 1/2"-600 RF

SO 6"-150 RF

BL150-16 RF

WN 500-300 RF.55RFSJ0S00 RFR50 RF Sch60@RF@4300 RF Sch40S0 RF0-1@0�-R RRF010RFRJF@443@RF@49000358