The development trend of PVC - U pipes was analyzed on the basis of the whole plastic pipe industry.
从塑料管道整个行业上分析了PVC-U管道的发展趋势。
The results showed that PVC-U pipe can fully meet the requirements of wastewater treatment and reduce the construction costs greatly.
结果表明：PVC-U管材完全满足污水处理的要求，并可降低工程造价。
In this article, USES of new additives in PVC-U pipe and USES of new special pipe material in polyolefin pipe and some new pipe materials were discussed.
本文从不同的管道材质的角度主要阐述了新型助剂在PV C - U管道中的应用、新型管道专用料在聚烯烃管道中的应用及一些新型塑料管道的材料。
The formulation design, technical process and technical control of the procedures in the production of fishery float by use of PVC-U pipe wastes are introduced.
介绍以PV C - U管材洗机料生产渔用浮标的配方设计、工艺流程及各工序的工艺控制。
Screw conveyor in the form of delivery is divided into two kinds of shaft screw conveyor and shaftless screw conveyor, in appearance is divided into U type screw conveyor and pipe screw conveyor.
螺旋输送机在输送形式上分为有轴螺旋输送机和无轴螺旋输送机两种，在外型上分为u型螺旋输送机和管式螺旋输送机。
Numerical calculations for sudden expansion pipe flow have shown that the secondary pressure correction method can clearly accelerate convergence, improve accuracy and save C. P. U time.
对突扩管道流动的数值表明，该方法可以明显地加快收敛速度，提高计算精度和节省计算机时。
This paper mainly discusses the damaged PVC pipe maintenance methods-U the related content.
本文主要探讨受损PV C - U管道的维修方法中的有关内容。
This paper will formulation design and production process control two aspects to explore how qualified production of PVC-U-green water pipe.
本文将从配方设计与生产工艺控制两方面来探讨如何生产合格的PV C - U环保型给水管材。
Analysis was made of several factors leading to occurrence of decomposition in production of PVC-U double-wall corrugated pipe and some manufacture experience was introduced.
分析了影响PV C - U双壁波纹管生产中出现焦料问题的几种因素，并介绍了一些生产经验。
This thesis points out the structure principal and project ideas of the production quality control system of PVC-U double-wall corrugated pipe, which is based on computer technology.
并提出了基于计算机技术的PV C - U双壁波纹管生产质量控制系统的构建原理和设计思路。
Vibrations of an excited U-shape pipe and its radiation field are investigated by using FEM software ANSYS and acoustic BEM code SYSNOISE.
利用有限元软件AN SY S和声学边界元软件SY SNO ISE对U型管道结构的受激振动与辐射声场进行分析。
U-PVC plastic pipe has been widely used in the field of drinking water support.
PVC-U塑料管材已广范应用于饮用供水领域中。
The second pipe was set vertically, with a U-shaped section cut out of one side of the bottom end to mate with the horizontal pipe.
第二根管子倒竖，用一个U型的被切去底部的一边的部件跟平躺的那个管子并排。
As conclusion which comes from venture grade system of U. s experts, such hydrocarbon pipe network which venture account is about 300 and belong to seriously dangerous.
根据美国专家的风险打分系统的结论，烃类管道的风险分值在300分左右，属于高危险管道。
PVC-U plastic pipe has the character of corrosion resistance, no-scale, light weight and long service life.
塑料管具有耐腐蚀、不结垢、质量轻、使用寿命长等特点。
Aiming at each process characteristics of the production, it has adopted different controlling models and formed a set of the production quality control system of PVC-U double-wall corrugated pipe.
针对PV C - U双壁波纹管生产线的各个工序特点，采用不同的控制模式，形成了一套PV C - U双壁波纹管生产质量控制系统。
Angle iron bender apply vertical structure. It can bend inner and outer various angle iron. It also can roll round steel, pipe, square pipe, U steel by changing different roller.
弯角铁机采用立式结构，可将各种规格的角铁进行内弯或外弯滚圆加工，还可根据使用要求订制更换不同的滚轮，对圆钢、圆管、方管、槽钢等型材进行滚圆加工。
In bottom heat mode, most of the movement of working fluid is pulsating and one-direction circulating flow, not random reciprocal oscillating in certain straight pipe or U-shaped pipe.
底加热时，热管内的运动多是循环的单向脉冲流动，并不是工质在某一个U型管或直管内的往复随机振荡。
The paper discussed the design of U-pipe bending machine based on hydraulic pressure automatic-control system.
本文介绍了基于液压控制系统的自动U型弯管机的设计。
An unsteady heat transfer model was sot up and solved by numerical solution for the heat transfer characteristic of U-pipe heat exchanger and the interaction of the two pipe legs of the GSHPs.
针对U型管埋地换热器的传热特点，考虑了两管脚之间的相互影响，建立起非稳态传热模型。
The utility model relates to a pipe bender, which is mainly used for manufacturing U-shaped stainless steel pipes.
本实用新型涉及一种弯管机，主要用于制造U型不锈钢管。
The utility model relates to a pipe bender, which is mainly used for manufacturing U-shaped stainless steel pipes.
本实用新型涉及一种弯管机，主要用于制造U型不锈钢管。
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