GB/T 12459  弯头 DN 20-Sch80S90ELR0）161.6/55-11=45-cƒâ€š&ampF BF16

DN 20-Sch80S 90ELR0）161.6/55-11=45-cƒâ€š&ampF BF16

nb=t47023 rf 600-1

PJ/RJ 100(B)-10 FF C=18 F=16 G=4 B2=1

47065.3 B1

WN 150-150 RF Sch40S

BL40(B)-25RF

WN300(B)-10 RF5 FF24150 RF B=900fRJ1630

WN 40(B)-10 RF

WN80-40RF,Sch40n20500c

PL 100(B)