GB/T 12459  弯头 DN 40-390ES

DN 40-3 90ES

WN 65"-150 FF Sch10S

DN 65-3.5 90ES

WN100(a)-16 RF12)1.6/ti

DN40-PN25 PL RF Ⅱ SC.6 RF

bl 400(B)-16 RFFa0000-600rj6R�

DN600/PN40/11B Sch40S

LWN40-600RF/5620-F@F81BB(BWN1) В�T20h40ARB@00 RF SC.6 RF

B WN 850-150 RF S=25

BL600-6