The deformation characteristic of the flame pipe necking was analyzed.
分析了火焰管缩口的变形特点。
The pipe blank dimensions and the necking force were calculated. The structure of necking die for the flame pipe was introduced.
确定了缩口次数并计算了管坯尺寸和缩口力。
The NC system of a five-axis machining tool for flame pipe cutting that we develop meets the requirements for cutting pipes of various kinds.
研制了一种五轴联动数控火焰切管机床的数控系统，该系统可满足多种类型管件的加工要求。
Nickel content in welded stainless steel pipe for decoration was determined fast by flame atomic absorption spectrophotometry, and the wavelength of determination was 232.
采用空气-乙炔火焰原子吸收光谱法快速测定装饰用焊接不锈钢管的镍含量，测定波长为232。
A powerful flame nc pipe cutting machine tool was developed based on the analysis of the principle and the torch movement for the flame nc pipe cutting machine tool.
在对数控火焰切管机床的加工原理和割炬路径的运动学分析基础上，研制了一种功能强大的火焰切管数控机床。
Role is to prevent external flame there is flammable gas fleeing into the equipment, pipe or prevent fire in the equipment, the spread between the pipes.
作用是防止外部火焰窜入存有易燃易爆气体的设备、管道内或阻止火焰在设备、管道间蔓延。阻火器机理是通过传热作用和器壁效应将火焰被熄灭在管道中。
A halogen-free flame-retardant and anti-static polyethylene material, a pipe and a preparing method thereof belong to the processing field of plastic pipes.
无卤阻燃抗静电聚乙烯材料、管道及其制备方法，属于塑料管道加工领域。
A halogen-free flame-retardant and anti-static polyethylene material, a pipe and a preparing method thereof belong to the processing field of plastic pipes.
无卤阻燃抗静电聚乙烯材料、管道及其制备方法，属于塑料管道加工领域。
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