production tube

Based on the theory of convective diffusion, the theoretical equation for interwell tracer production concentration is derived by the stream tube method.

以对流扩散理论为基础，利用流管法导出了井间示踪剂产出浓度的理论公式。

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The Stress and Displacement of the Dangerous Field on the the Tube-plate and the Edge of Man-hole and the Tube-plate Are Affected by the Supporting Bar Production and Application of Pretensioned Concrete Wall Pipe Piling Sheet

管板上危险处及人孔与管板周边应力、位移受拉撑杆件的影响先张法预应力混凝土管桩端板生产及应用

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Future developments of seamless steel tube production technology& review of the second international steel tube Exhibition

由Tube90展望无缝钢管生产技术的发展趋势&第二届钢管国际博览会札记

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Study of the application of thermomechanical treatment in seamless tube production analysis of seamless tube production in China

形变热处理在无缝钢管生产中应用的研究我国无缝钢管生产分析

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Discussion on Necessity for Obsoleting Backward Seamless Steel Tube-making Equipment at Home in Terms of Production Setup and Dependence on Export of Seamless Steel Tube Industry

从无缝钢管生产格局和出口依存度现状分析我国淘汰落后无缝钢管装备的必要性

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Then, they introduced the advantages of W-bend forming and its application in thick-walled tube production.

并介绍了与单半径孔型和双半径孔型比较，W成型的优点及在厚壁管生产中的应用实例。

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Tianjin Pipe Corporation Tube Processing Factory transformed the original plain-end tube production line into plain-end/ casing tube line in order to produce the oil casing tube with high additional value.

天津钢管公司管加工厂为了生产高附加值无缝石油套管，将原来一条光管生产线改造为光/套管线。

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Introduction and Future of Plastic Tube Production in China

我国彩色塑料软管生产概况及前景

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The main parameters influencing relative elongation are analysed by research on experiment of size prediction of thick-walled tube without mandrel by open-die cold extrusion, and their curves of changing rule are given, which applies reference in order to direct practical production.

本文通过对厚壁管件无芯棒开式冷挤压尺寸预测的实验研究，分析了影响相对伸长量的主要参数，找出了它们与相对伸长量之间的变化规律曲线，为指导实际生产提供了依据。

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The first CPE seamless steel tube hot-rolling in China completed and put into production completed aided design for fan coil air conditioner

我国第一套CPE热轧无缝钢管生产线建成投产空调器的风机盘管计算机辅助设计

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