GB/T 12459  同心异径管 DN 950×10-Ⅱ-6RC6b)00F-1 n=10. RF S-H1=RF

DN 950×10-Ⅱ-6 RC6b)00F-1 n=10. RF S-H1=RF

PL10-6 RFi10/u00c35fF0a0 RFÂÂ0c3/u050 RF Sch40

WN500(A)-10RF2.5/88

SO 25(B)-16 FFqu

WN 100-300 RF5F1=8Fhg

hg20615-2009 wn300-150RF sch30

bl600-150 mh5-

WN50B-25RF S=≥3.5D4=555°ã

so450-40g 0/0-1)-