GB/T 12459  等径三通 DN 50-Sch10STSт�

DN 50-Sch10S TSт�

WN 20"-300 RF S=17

WN 8"-150 RF Sch4000 RJORF Sc

LWN50-150 RF5

WN 20-150 RF2.�

SP-2-3/400-60RF

WN 750-600 RF B=

wn50(b)-16ff s=5.5

(B)WN600-16RF

PL 50(B)-16 RF/pmpampampampampnf00h4 RFscdata5 RJ0SM.5j&hM60B1hδ0=1=97.