HG/T 20592  法兰 PL 20-16 FF b=1=3F HG/=58a88&

PL20(A)-16 FF b=1=3F HG/=58a88&

PL40(B)-10RFc2HGB- s=4RF

PL600-25 RF RF Sch40S2=295δ=60 H=rjRF.

PL 350(B)-16 RF

so15(b)-16 rf s=3B1=78amD=215 B=1=s=36.2 s=7sch30R20S

PL500-10RF B=5F S/1

SO20-16 M/0 H=450/RF2S=4.009=8 rf-b=8

LP-4

BⅠ1800-S00 RFa

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