HG/T 20592  法兰 PL 25-16 RFmpampampRF S=0H=25RF Sch4RF0b4=60 h=A)-16rf0-1

pl25-16RfmpampampRF S=0H=25RF Sch4RF0b4=60 h=A)-16rf0-1

1RF500-0.63006-16rf830K1065-16.50e5 K=-2.5.

pl65(b)-10rfb1=pampa

WN350-150 RF S=52000-s/0-h160-)6 R

47022 c-ff700-1.6FF6mm8-13 n=4 L=14 SDN=500 δ=46 H=1

wn200(b)-25fmc=55h=88s=1

LWN25-900 RJ B=