NB/T 47065.3  耳式支座 B9

3 B9032

LWN50-300 RF Sch406rf-300 RF

WN 3 1/2"-150 RF Sch40

3 B2143

BL 2"-150 RF

BI 1700 h=250510/60h80)5/c

DN20/PN25/21BM00AF5@�6

WN80(B)-16 RF48823

3 B2640

WN 3"-150 RF Sch40S40Ss=8.02)-150 RF@40@RF Sch4040 Sch781078��� rf@ch