GB/T 12459  弯头 DN 50-Sch6090EL6 RFt06p@ТАF5@PFFt Std9@45@0-10Sh8F0

DN 50-Sch60 90EL6 RFt06p@ТАF5@PFFt Std9@45@0-10Sh8F0

WN 300-150 RF Sch20

WN300(B)-40 RF S=≥9 f1=4

SO 50(B)-16 RF

WN 20"-150 RF Sch40S

WN 80(B)-25 RF22F. M SCHom/@44F ScFR(041RF0sc@S9 h30(40RF-R�@4п▓�� 20 R7.5 RJ�0-f/Fc2@RF@0

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