GB/T 12459  弯头 DN 80-Sch40S180ESH@-300 LMJSc

DN 80-Sch40S 180ESH@-300 LMJSc

BI 2000RFrf@47

3 FM 1400-1.6 δ0=14

JPL 40×80(B)-16 RF

WN65-40 Rf4.@�� n=4�Җ�BL80-600RF C=360 RFc@443R

DN 65-Sch10S TS

WN400-25RJ5FF86Fm06

WN60-40M5

WN20-10TF RF

IF 6-300 RF@40@44aH80RF210.6R=19/=ch40s3=2500ff