GB/T 12459  弯头 DN 1200-Ⅱ-1090EL80)

DN 1200-Ⅱ-10 90EL80)

pl80(a)-16rf/=/RF13

NB/T47023 -FM2100-1.0/1

47023 RF300-1.0/64

BL RF 20K 150A=12.5

WN65-2500 RJ 1SScmRRFchnRF8Sh40f67

BL250-300 RF C=

PL 500(A)-6 RF-1.h40f67

PL 50(B)-2.5 RF RF S=3.

pl350-6rfO30H4mpata0P7.5 RJ10CH RFrF-4-R7.5f(