GB/T 12459  弯头 DN 150-1290ESF/@475400F h=1

DN 150-12 90ESF/@475400F h=1

PL15B-16 RFFF/u00cRF2rf1f)K=4id

IF 80-40 G10

1 M 1100-0.601 R1.6/7 b=

BⅠ1800-SS==20/(b)F@PL15-100

so 200(b)-10 rf0)S

WN50(B)-100RJ Sch40S0Sch40 S=8.1 M f2=4 C=380-

LWN40-300RF/u0cl

WN 25-2500 RJ5sch5-15Fp880-f/@47023 R