要对管道元件进行强度计算，首先就要确定管道材料的许用应力。

If the strength calculation of piping components is to be made, the allowable stresses of the piping materials shall be determined fist.

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公司完全能满足压力管道元件和安全附件的生产制造、试验检测的相关要求。

The company completely satisfies production manufacture and test check related requirements of pressure piping components and safety accessories.

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采用有限元法建立不同管道元件的单元刚度矩阵和单元质量矩阵，最终形成管道结构的总刚度矩阵和总质量矩阵。

Finite element method is used to build up element stiffness matrix and element mass matrix. After the combined total stiffness matrix and the total mass matrix are obtained.

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