VALVE GATE 3/4" 800# SW A182 Gr55 UNS S32760
VALVE BALL FB,WRENCH OP,BS-EN-17292,SW,SS,FORGED,ASTM A182 G
Ductile Gate Valve BS 5163
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闸阀 A182-F304 TRIM:304 CL800 SW API602 BB-BG-OS-OS&Y
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Gate Valve,Bolted Bonnet- Bolted Gland,OS & Y,Carbon Steel,.
FC API 6A gate valve Body,中文是什么?
non-rising spindle gate valve是什么阀门啊!
full bore gate valve 是个什么阀门?full bore