HG/T 20592  法兰盖 BL 40-10 RF C=12 d=100 D=155 f1=345/

BL40-10 RF C=12 d=100 D=155 f1=345/

PL350(B)-10Th80S0(B)-16RF-16 rf-150h1 δ0=10wn4SFSch40=

PL200-150 RFF100-205δ=10RF2951=5(B)-10 RFO

WN 40-300 RF S=966 δ=58 H=1=4 700

WN25-63mRFWf40A�Wfsch4F50 D=715 L=30 n=20 d=609m RF3.9.5

so450(a)-16 rf&)a)