GB/T 12459  弯头 DN 200-SCh8090ELm-006R0

DN200-SCh80-90ELm-006R0

2 CG 700-1.6f Sch4040-60/FcF400f/@.0

WN250-900 RJ SCH8F�0=

WN20A-100T S=2a00@RJ-1671@° C-R41300-B=38

so200(b)-25 rf=

pl65(B)-16 rF Bata/srcR RF S=14ppa�5 RJ-1671@°ch4000

20592 bl250a-100rf-ch40Sf5

BL500-16 RF92h4515

SO8