GB/T 12459  弯头 DN 400-590EL δ0=2-1.6 п-10rf¦Â6

DN 400-5 90EL δ0=2-1.6 п-10rf¦Â6

SO300B-25G40/9mch40sschT2061-g20615-21.ch80quotR8m40m0R

PL 32(B)-16 FFS4F S=6 H1=7H80 b= B=7

pl100b-10RFh8/16

2 rf1100-1.6-380 е

DN32-Class900 WN RF4-14000Fu

A 20001/58

BL300(A)-16RF/j&;quot;0 RFRF 8700

SO500(B)