自1994年开发推广以来，冷弯方管罐道已在300多个矿井井筒安装使用。
The shaft guide is our patent product protected by intellectual property law, and it has been adopted in over 300 mines since 1994.
阐述冷弯方管采用有限元弹塑性非线性分析理论及应用ANSYS软件的非线性分析方法；
The elastic-plastic non-linear behavior of the cold-formed square hollow section columns analyzed by ANSYS is presented;
冷弯空心型钢是冷弯型钢中的一类重要产品，其通常包括圆管、方、矩形管以及按照特殊要求制作的异形管。
Cold-roll void forming sheet is an important product in cold-roll forming sheet, which usually includes pipe, square tube, rectangle tube and unusual tube made by special requirements.
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