GB/T 12459  弯头 DN 600-Sch12090E3Dnbspd=608F.

DN 600-Sch120 90E3Dnbspd=608F.

WN25-63RF=2.00

lwn250-63rfh4aa-2-30/0RB)-16RFmp;a

PL15(B)-16RFL47ni1

so350-300 RF schamp100.0= s=131000-3

47022 -M1400-1.001¢Ã¥ââ

pl500(a)-10 ff c=δ1=25i RF

WN200(B)-16 RF S=60-0.-16RFF1500-

WN400(B)-40 F