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1·Provide welding neck flange butt welding required for the purpose of the right pad with neighboring component.

提供焊接法兰的脖子上对接焊目的所需要的正确垫与邻近组成部分。

2·In this paper, by using 2D-FEM, the stress distribution and the stress concentration of the welding neck flange of different cone angle and end height were studied.

通过对特殊法兰进行应力分析，观察法兰的锥颈角度和端部高度的变化对其应力分布的影响，并对应力集中现象进行了分析；

3·Blend steel welding of flanges is allowed. Long neck flange should conform to related stipulations of GB 150.

法兰允许用钢板拼接焊制，对长颈法兰应符合GB 150的有关规定。

4·The long neck flange should have stress-relief heat treatment after welding.

拼接法兰应进行焊后消除应力热处理。