GB/T 12459  弯头 DN 80-Sch10S90EL خ´=4

DN 80-Sch10S 90EL خ´=4

SO32 -40tfF03502mpampampampampampam@FпҝҪ0 TFh40@ch40)-1

DN 300-Ⅱ-10 TSF Sch40S ��

SO200(B)-25th40)-6 R4h4mp

wn 350(B)-40 RF S=16

so500-600rf S=3M6b385

pl 32-6 RF6F0-40rf6pl25-Bchh

bl 500-300rf

wn 20-300 rf s=3.5

SO 6