GB/T 12459  弯头 DN 200-690ELA)M700-1.09 b=´=

DN200-6 90ELA)M700-1.09 b=´=

PL50(A)-16 FMF8f s1670000RFch40

PL50(b)-16RF-G6Р

PL100(B)-16 RF.6RF09 RF S=

3 RF 2000-2.5 δ0=

APA-2RF S=33.3b=21-3 RE12Â0rfCH40b=36 RF sch800

NB/T 47023-2012 M1000-1.613535AA50M450-4.t

WN 125(B)-25 M S=L/0b=2.amp

AWN