HG/T 20592  法兰盖 BL 1200-10 M X=1253 f2=5 D=1360 K=1

BL1200-10 M X=1253 f2=5 D=1360 K=1

WN 300(B)-25 fm S=8 C=58.5 H=116.5

WN20(A)-16 RF S=3F R

wn65-16gch40 H=100f b=10-1.0=300 FF0-16300F00r

WN200(B)-25RF S=1415-2009806�0

wn65-40t╠Б∙░я▄Б∙÷я▄Б√└я├Б∙▓16 rf b= Sch608 KRF&/F