From the perspective of convex pipe stress in the cap from hemispherical tube cap.
从受力角度看凸形管帽中从半球形管帽。
Body symmetry, in particular welded body structure, well under the stress from the pipe.
阀体对称，尤其是焊接阀体结构，能很好地承受来自管道的应力。
Therefore, it applies to a variety of stress path and the pipe connection.
故它适用于各种通径和压力的管道连接。
The source of pipe line secondary stress check condition is the stability condition.
管道二次应力校核条件来源于结构的安定性条件。
Longitudinal crack of drill pipe box joint is brittle fracture at low stress.
钻杆接头的各种纵向开裂属于低应力脆性断裂。
Longitudinal crack of drill pipe box joint is brittle fracture at low stress.
钻杆接头的各种纵向开裂属于低应力脆性断裂。
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