法兰 PL 500-10 RF b=2

pl500(a)-10 rf b=2

bl15(b)-63mRF S=6F6.19=260m5M6.

SO80-150 RF B=43.=36-28/654h511-16RF5≥4-B6 RF D=

pl150(b)-16 rf d/F SCH40h40ch400-00r

so300(a)-16rfB/

WN350-25 M/f 700-1

NB/T47022 FM1300-1.0/-

3 FM 600-2.5 δ0=12

PL25(B)-25 RF ,HG/00 H=10f/

BL45