GB/T 12459  异径三通 DN 700×700×200-Sch20TRTR TR4.h1)-16(

DN 700×700×200-Sch20 TRTR TR4.h1)-16(

WN50(B)-25 RFB=80L

SP-3 DN=2500 δ=12 S1=10e1=9.53RF0rfF

BI 1000M SB)

WN 300-300 RF B=3/46-2009590r=-10-5=46/R4

DN 250×250×450-Sch30 TR

PL 15(B)-40RFd=92.1密0(b)-40rfFS0rf RFF0=18HG

3 CM 500-0.2520δ0=200=18