NB/T 47023  法兰 FM 1100-0.6� 304F Sch40RFF500-0.6. so1sc5 未

47023FM1100-0.6� 304F Sch40RFF500-0.6. so1sc5 未

PL20(A)-6 RF b=3

bl100-150 rf п╟п÷п╒п┴п╟п▒я┌б∙б≤п╟п÷я┌б∙б═п╟б▒я┌б┬б≥

BL 80-16 RFsch8

WN 20(B)-16 RF

SOP FF 5K 10Ap

SOH RF 30K 20Aп©Б√▓�