HG/T 20592  法兰 PL 100-16 FF d=200 k=16/RFM S=8S H=194.

pl100-16ff d=200 k=16/RFM S=8S H=194.

BL300-6 RF1000F 4-18RFso15-150jF51.01642.5 b6(b)-

wn20(B)-40g Sch40S RF C=18 K=145 H=45 f1=3 n=4 A=76.1 S=2.9 rf s=5.6 ch8RFb=148600rf

5 RF 1800-4.020δ0=6F6h.0.

so 25(b)-10 rf-10 r5bampampampampamampa4j sF.-20