HG/T 20592  法兰 SO 20-16 RF aa= b=3f00a blh7023

so20-16rf aa= b=3f00a blh7023

LWN 40-150 RF B=41 H=249

LWN 50-150 RF B=52 H=210

LWN 50-150 RF B=52 H=220

LWN 40-150 RF B=41 H=221

LWN 40-150 RF B=41 H=229

LWN 50-150 RF B=52 H=182

DN65/PN10/01A1A δ0=

B WN 950-900 RF ScfampHS.6T54.2ch4R s6RF0

LWN 40