高压活性弯头使用高密度钢制造并且经过热处理，这样能够确保额定的工作压强，延长使用寿命。

And the high-pressured active bend use high density steel manufacture after the heat treatment, can guarantee the fixed work intensity of pressure like this, extension service life.

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本文概述钢制对焊高压带直段弯头的开发。

This paper describes the development of high - pressure steel butt welding bends with straight ends.

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