GB/T 12459  弯头 DN 700-Ⅱ-390ES

DN 700-Ⅱ-3 90ES

pl40(b)-16RF f1=3 b=29 h=RFr19n S=S80rf/S=12

PL350- 16 RFF CmRF

BL450(b)-16RF5rf

BL100-10RJ/0rf

pl32-16rf5 RF

SO200-10M)-2FRF06M0RF�00RF4

BI 273N RF Ⅱ Sch40S RF006rf-16F LG S

Wn40(a)-16RF=8 FM600-416 RF BB=257R156RJ Sch1/

WN600