HG/T 20592  法兰 WN 250-40 MFM-)-7F50R(4 S=12=100 H=205/u0 HF H=40051 W

WN 250-40MFM-)-7F50R(4 S=12=100 H=205/u0 HF H=40051 W

pl80(b)-10rfc=10-40 rfF PL

SO 40-300 RF16

BL 10-63 M 38/fo45 h1=012=3invok)-b=2.525R040s RF5

LWN50-150 RF H=25057-110-1.0/40 R

PL25(B-25RF0=H=440a6/h80 Sch400 rf525h40800-1.0/forum

WN65(B)-63FF