NB/T 47065.1  支座 BⅠ 18001-RFRF41=49 d=78.5/12

BI 18001-RFRF41=49 d=78.5/12

WN 25(B)-16 RF S=4.5

PL450-16FMampampampampampam60Sf100-1

WN3/4"-300 FM Sch40

PL125(B)-10RF S=5RF Sch40Spn16

WN 8"-150 RF Sch10S

nb/t47023 m2000-1.0 δ1

1 RF 700-1.0 δs=10

WN40(a)-300RFRFMF/5.025-150r

WN 150(B)