GB/T 12459  弯头 DN 20-Sch80S90ELRF/

DN 20-Sch80S 90ELRF/

wn100(a)-63 m s=92)-1

DN400/PN16/05Bmp

ๆณ• ๅ…ฐ WN40-300 RF

PL200(A)-16RFذ“آ ذ’

WN80(B)-40 M S=8/ РһТҷ=60 H

bl600-10t/F6Bs.-600rjR4bRFž15 Fe

SO 25(B)-16 RFh40 RF RFFШ°В пҝҪ

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WN150(b)-40