GB/T 12459  弯头 DN 350-SCH8090ELR0

DN 350-SCH80 90ELR0

WN 20(B)-25 M1.0RF=60 H=125rfH40 rf0 S=09 LWN40-2500R0 RFm0/

SO125(B)-16RFb60837FcM5rf=5

WN25-150FMpampampampampampampam

WN 20-300 RF3

bL200-25m

wn450-40fm,s=20 S=20RFb=7rff s=

20615 LWN40-150 RF B=34 H=45070-13=184

bl 400-40 RF