GB/T 12459  弯头 DN 800-290EL1RJ0 RF-RFRFS6RF00Am40ff

DN 800-2 90EL1RJ0 RF-RFRFS6RF00Am40ff

LWN 20"-150 RF.65FFFFR501rum@80 S Sch80FcaRF00��.5 RJcFFr612

pl450(b)-10 ffM�

WN20(a)-16M1.0

Pl150(B)-16RFPL100

WN 300(B)-25 RF15 B

WN 150(B)-16 RF S=52250 SCH40S7.5 RJf/@4�p0O2mCF0085

JSO 25×50(B)-