GB/T 12459  弯头 DN 20-Sch40S45EL0rf100 T/RF0B

WN 65(B)-25 FF40-16RF

DN 20-Sch40S 45EL0rf100 T/RF0B

bl300(B)-16RFr/0-/692jmx-f20- S=835/1-150RFF1000-0sflas

SO 4"-150 FF/4h16rfet/u0 RFF.6m S=8rf0f S=

PL80-16RF B=91 b=4hG/T20592Mf=

47021 FM400-1.0 δs=8 DRF S=4 H

WN 300(B)-40 RF

3 M600-2.5

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