HG/T 20592  法兰 PL 80(B)-25 RF/)F6R0-3-1.60-

PL 80(B)-25 RF/)F6R0-3-1.60-

SO 80(B)-16 M

bi2800-

WN 80(B)-16 RF ker δ

bl600-16RF=10RF0-8B

LWN 50-150 RF SCH80 H=169

BL500(B)-25 G/cRF B=64182/u00ac

WN80-300 RF Sch40S0-1.5u00c2/

SO50-150RF=0 R

NB/T47023 FM800-1.6/54-121mn/b�、150RF.6 δ=u00ac/16