NB/T 47065.1  支座 BⅠ 4394

bi 4394

bii 2905

4 A489

BL 250-16 RF

SP-3522

LWN 150-900 RF Sch80

3 B5437

PL 20(B)-6 RFf60 h;a=40 fm=8F-L

bi 2213

bii 31506rf 1JsRF@F Sh4��S@RF@443RB)-16RF RJ-RР63 rt0 m Sch10SFSO@4)-6 RFa)-10 rf(a)RF2-2254&;amh405sFF B0 RF H=362 Sch57F B=3000 R