HG/T 20592  法兰盖 BL 20-6 RFs00 T��@SR)-F&@tTf�SB).01 PL300rfD@5204h1 h

BL 20-6 RFs00 T��@SR)-F&@tTf�SB).01 PL300rfD@5204h1 h

PL200(B)-25 RF/615-2

BL150-25 GRJB)--110

So500a-16rf-1.6

BL350-100GFSch440S8140SBL40-300RF/

PL300(B)-16g��1959R

WN 80-300 RF B=77.A

WN80(B)-100 RF sch40s=656103

LWN50-150 RF B=52 H=164

W