NB/T 47023  法兰 C-RF 1700-6.4/20δ0=20

3 CRF 1700-6.420δ0=20

lwn20-600rff3ampam R5+0=400S=61625RF0

BL400-10ff0 d=215.50G0 wn0F SCH20-110hg200=10500

PL15-6MMampDh40STDch

1 FM 800-1.0 δs=6401=8--4mch.1F0 Dr=00RJ

PL32(B)-16 RF 负5

3 T 1500-1.0 δ0=10

PL400(B)-16 RF00-1.0/at

WN40-40 G

SO10