|
挠性管内径d
|
圆筒直径D
|
|
13
|
150
|
|
15
|
150
|
|
20
|
200
|
|
25
|
250
|
|
32
|
300
|
|
38
|
400
|
|
51
|
500
|
|
64
|
650
|
|
71
|
750
|
欧盟ATEX防爆指令认证 ATEX 94/9/EC ATEX
隔爆型LED防爆灯具概述