GB/T 12459  弯头 DN 450-Sch4090ESch4 RFsch8S0080/data/public/wx

wn250b-100g RF Sch60s6ch40.0/70-165rymkzeheh1056M 500

PL200(B)-16 RF b=1)-6RF0 h=

WN 300-300 RF

3 FF 1200-0.620δ0=12aa=432

wn500-40rf616 RF6100-=4 BB= s0S

PL350(B)-16 RF b=5 D=519.7 B=381.3 C=34.7 d=426

1 RF 1200-0.25B)-161.0 δ=25 t.5 r.0F

PL32B)-1