Based on the limit analysis viewpoint, a formula that could be used to estimate the in plane limit moment of welded branch pipe Tee was derived in this paper.
基于极限分析的观点，推导了工业中焊制管道三通在面内弯矩工况下的极限载荷估算式。
Based on the limit analysis viewpoint, a formula that could be used to estimate the out-of-plane limit moment of welded branch pipe tee was derived in this paper.
基于极限分析的观点，推导出面外弯矩作用下焊制三通的极限载荷估算公式。
Developed excogitates of two decumbence and one horizontal molding die realized the increasing height of branch pipe of heat pressure tee.
研发出了两个横梁和一个水平成型模具，实现了热压三通支管高度的增加。
Developed excogitates of two decumbence and one hovizoutal molding die realized increasing height of branch pipe of heat pressure tee and reducing radius of synodical arc of tee.
研制出两套立式模具和一套卧式模具，实现了用工艺方法增加热挤压三通支管高度，缩小三通相贯区内拐角处圆弧半径的目的。
The tee joint entity model has been chosen by the study of the influence of diameter of the branch pipe and the length dimension of the run pipe and branch pipe.
研究了不同支管管径、不同管长尺寸的影响，选择了三通实体模型；
An approximate method for calculating the elastic stresses at the squeeze at the squeeze corner sections of an identical diameter Tee branch pipe connection under internal pressure was presented.
针对石油化工行业大量采用的等径挤压三通，提出了一个计算内压载荷下的纵向平面内挤压圆角处各应力分量的近似方法。
Tee is used at a branch pipe fittings.
三通是用于管道分支处的一种管件。
A technology to form copper long-branch tee pipe directly in compound forming of bulging and extrusion is developed, the formula and calculation of the forming force are introduced.
对紫铜长支管T型管复合胀形工艺进行了试验研究，介绍了包括冲头挤压力的公式与计算，试验中所用复合胀形模具结构和部分重要零件的设计与选取及试验结果。
A technology to form copper long-branch tee pipe directly in compound forming of bulging and extrusion is developed, the formula and calculation of the forming force are introduced.
对紫铜长支管T型管复合胀形工艺进行了试验研究，介绍了包括冲头挤压力的公式与计算，试验中所用复合胀形模具结构和部分重要零件的设计与选取及试验结果。
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