HG/T 20592  法兰盖 BL 25-16 M.F20h4c5/u2995R0n=300 RF/1.691048 h=

bl25-16m.F20h4c5/u2995R0n=300 RF/1.691048 h=

so400-25fm150R2520cC-3350rfFF RF40B)-16 rf s=6

法兰盖BL 50-600 RJs

WN200-10FM S6L S=5 DRF0(A)-25FF FF 6 RF)/ouS306tH

PL250(B)-16fF D8/ RF50-150F135/1=24=65Ã0 RFS)

1 RF 500-1.0300RF0(A)-25FF FF 6 RF)/o