GB/T 12459  翻边短节 DN 700-Sch10LJSF SchXSch8J Sch6� A

DN 700-Sch10 LJSF SchXSch8J Sch6� A

wn40b-16rf s=4)SR2ў�6RF

BL450-25RF-20.6=

WN 3"-900 RJ Sch80S5F=7750S600

BL 50-16 RF/T20/s=1041600

WN 300-300RF56-135/5/70s=86r

SO 15-900 RJRF S=/ l=1/=400rf200(ra17500

SO50-150RFch4-in-c0/cj&am

WN40(A)