GB/T 12459  弯头 DN 300-Sch40S90EL20-10/

DN 300-Sch40S 90EL20-10/

PL80(B)-16 RF00(BRFF/

PL 100-16 RFa-10rSâ200

wn100b-40g04.0b wn1000-150 rfch400e930=

WN50B-63RFS2-20chF

WN250-600RF Sf-24 RF20RFFS

WN250(B)-10 FF4.54

SO 25(A)-25 M

pl250(b)-16 RF f

wn20(b)-100 m=34/0061 RFT20600LASS15mpampa