GB/T 12459  弯头 DN 350-Sch40S180EL

DN 350-Sch40S 180EL

WN40(A)-16RFrfMM S=6

so50-150 T30-

WN250(B)-40 M S=8hf000-1.0;ampa/Fs=820S0

so50-150 RF sch80510

pl500(b)-10 rf d9 PL32(B)-110Srf69(B)-0smch┐Γò

WN40-63 M S=4RF BB=257R150(5fFSO32 /504/RF

wn200-600ffRB)-660/

PL 80(B)-16 RFR313F