GB/T 12459  弯头 DN 15-590EL=160=

DN 15-5 90EL=160=

BI 2400 0fB5.0 δ0=126RF rf0s0 Y=254 RF a10SR38â3 dâ€50-1.0/F

DPL200-16RF25d=00 RF S3

WN 40-300 RF B=38.3

PL600(B)-6Fm2 n6F6 RF6C=

BL 200-6 RF01www.hgcR

NB/T47022 RF800-1.610 S rampf(b)-16rfR=mF63073 212 S=4)-150RF s=5

WN40-300