GB/T 12459  弯头 DN 32-Ⅱ-490EL

DN 32-Ⅱ-4 90EL

lwn40-150 rf b=410 f1=2.55RFI 1-15�â�

wn15-40rj8Mfs+++16 RF ScS=

BL250-25 M

PL 40(B)-16 RFa0RF21550-2-20 mr6Å18ad0522=50F S

PL250-16FF0000-44

PL25(B)-40 RF1'9a F

WN600-900RFl65(b)-16rh h

SO50-150 RF

WN150-600Trf4A Sch16050-0.6