GB/T 12459  弯头 DN 25-Sch80S90ES=

DN 25-Sch80S 90ES=

SO 1 1/2"-150 RFampampnbspâ€

wn32-300rf s=

SO 200(B)-16 RFch6h80SSc

wn40(b)-150 rf4.57

WN25-600 RF HG/T20615pampampchb=RF@F RF

法兰WN 150-150 RF,Sch40s

WN40(B)-16FF0m0-pamp

bl250-63t=1

bl 400-300 rf/ dR�12яSHG/�ÂÂS&