NB/T 47065.1  支座 A 2874

47065.2 A2874

WN 700-900 RF Sch100

PL 300(B)-10 RF

PL300(A)-10 RF

A WN 40"-600 RF B=23.83

47065.2 A4880

47065.4 A2200

WN 25(B)-16 RF S=3

3 B2388

SO400 - 16RFF Sch80 Sch120S=8�М—F1187t;-150 RF Sch40701777N10 PL RF Ⅱ Sch40 SC¢��F2055@PRF