GB/T 12459  弯头 DN 25-Sch2090ELRF S=6F

DN 25-Sch20 90ELRF S=6F

PL200(A)-2.5 RF

WN15-300 RF B=10.3

WN25-600 RF S=4.5

DN15-Class150 WN RF

WN125-300 FF/1�ï؟½25F

wn50-150 rfГ Вё

BL 500-6 RF

WN 250-900 RJ

WN 100(B)-100 RF S=861.9 +092-2009Ã0592-20090 RF S=12��77ҝҪ20S B=82. undefiFf