NB/T 47022  法兰 FF 700-1.6/20δ1=10

2 FF 700-1.620δ1=10

SO 50(B)-10 FF0S50-16R

lwn20-300 rf60650RF B-150

WN250-300 RF ASM/

wn150-40 m

BII 3400 HF0rf1 S

BL20-900 FM5/10-150fm15-2 WN30

wn50(b)-16 tgrjfmpam0FR.0/w

lwn20-300 rf60650RF B-150 RFN01.6/4816D=./F bF

WN300b-16 FM3.40rfF5=EL