GB/T 12459  弯头 DN 50-Ⅱ-490ELRumF T00 RFM1

DN 50-Ⅱ-4 90ELrumF T00 RFM1

法兰 WN80-40RF

47023 FM 900-2.5H=1

pl80(a)-10 rf fS=23-4

LWN75-300RF150 RF Sch40S�F/10 RF410wn1RF��mpampampampampamch40B)0 RF.0@RF8FFMRF@RFFS

WN 80-300 RF

WN250-40RFS=12 Sch1405 RF S▓я

BL 6"-150 RF

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