GB/T 12459  弯头 DN 50-Sch4090EL0-4

DN 50-Sch40 90EL0-4

DN25/PN40/11C

WN350B-40FM=560 aa=41210 aa=550-1.6a

LWN 100-150 RF-150 RFB=B 600-1=5C=1

BI 10000-1.0S=5RF0-051-00F00 rfD=MFM

HG/T20615-2009 法兰WN150-900 RJ B=13

SO 125(B)-300 RF030 K6b)-151amp

试压盖 BL80-600 RF�

03 FM800-4