HG/T 20592  法兰盖 BL 300-40 FF40Mp0RJRF00-

BL300-40FF40Mp0RJRF00-

WN40-300MF

BL40(B)-16RF

LWN50-300RF SCH40 H pl1Sc10 RF50-4.0RFF@443

BL150-150 RF C=35

PL 600(B)-16 RF

BII 28116

WN 125(B)-63 RJ S=7

WN 600(B)-16 RF5059RFRj R

WN 350(B)-10 RF S=8300 RF Sch4RF RF-RF1.0600 RF B=2CH20¯b�FM 800