GB/T 12459  异径三通 DN 650×650×20-Sch140TR=1B=4Æ�00S.

DN 650×650×20-Sch140 TR=1B=4Æ�00S.

47023-fm 900-4.0r

3 RF 900-2.520 RCpampampampam

47065.3 B10=009 20

3 c-fm800-2.5c

ASME B16.5 BL20"-150 RFRF c=13 f1=1

wn100-150fmsch40)-40 R0592-12050rf0 c=1

WN 50(B)-10 RF B=49M=108 n=f5

BI 23005RFampam

4