NB/T 47022  法兰 M 300-1.0/1.SCH403

2 M 300-1.01.SCH403

BL 150-10 RF

DN100-PN16 PL/C RF I

47023 m1300-4.46F6R

BⅡ 17738

WN 4"-150 RF Sch5525

47065.4 A2771

2 RF 1000-1.0 δ1=8 RF46sch40 H

WN 300(B)-16 RF S=555

WN 1 1/2"-300 LT Sch40SF3937SF Sch40RF0050R6150/0 RF40805@4 RchTr