NB/T 47065.1  支座 BⅡ 2442

BⅡ2442

BL 100-300 RF

WN 4"-150 RF Sch40S

LWN40-300 RF

WN 4"-150 RF Sch5708

WN80(B)-10RFSs0c3RF RF B=38.3&amp

2 RF 1000-1.6 δ1=6

LWN 2"-300 RF B=52.6

WN550-150 RFRRFde0.5 RJ R1cBch40S0SS5 RJ0-SF3h 450RF-R250

SO500(B)-16RF-16 RFSch