GB/T 12459  异径三通 DN 400×400×20-Sch80STR

DN 20×20×400-Sch80S TR

WN80-300 M

WN80(B)-25FF/amp;amp; s=3-10

bwn650-300rf16

SO25(B)-16 fmCRRSc50-600RJ40RF0RF6RF25R/tar

PL50(a)-16 RFmb)=3tm�өв

WN80(B)-16 RF6DN=6=12k C=16/16 H=150F=RF SC

WN25B-16 RF S=5/

3 M 350-6.4 δ0=8L RF Ⅱ00rf0 FF S=