HG/T 20592  法兰 PL 600(B)-6 RF b=4 C0 rf sch40(B)/�fS=10

pl600(b)-6RF b=4 C0 rf sch40(B)/�fS=10

WN300-150 RF100-RF HG5 rfаёёаё—аёўаё„аё

hb/t20615so150-16rf40m0(B)- b=5.800ch60

LWN15-150 RFf500S150 RFRFpampF S=60 δs=8fr300PN63 PL RF ⅡF-128 Sch@bi 16(wn15-100rf)}���Ã�@4RF5

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