New calculating formula has been put forward for reducing ratio of wall thickness of cylinder-type pipe in bending, by using regressive analysis and curve fitting, which has been proved to be with higher calculating accuracy than that of formula being used at present.

Based on the three-factor rolling theory in which Okamoto introduced v_m, the average deformation coefficient, the author derived the criterion and the formula for calculating the change in wall thickness of steel pipe during hollow drawing.

本文根据冈本丰彦引入平均形状变化系数u m的三元轧制理论，推导出钢管空拔时壁厚变化的判据和计算式；

互联网摘选

Some factors including pipe length, free span length, outside diameter of the pipe, wall thickness of the pipe, concrete coating thickness, and seabed slope were studied in the sensitivity analysis.

同时进一步分析了模型计算长度、悬跨长度、管道外径、钢管壁厚、混凝土配重层厚度以及海床坡度等因素对海底悬跨管道多点输入非线性反应的影响。

互联网摘选

The results show that the main reason is that scouring corrosion and the unrational design of pipeline made local thickness thinning of pipe body and decreasing the pressure resistant ability.

结果表明，管道冲刷腐蚀、管道设计不合理使管体局部壁厚减薄、承压能力降低是其断裂的主要原因。

互联网摘选

The diameter of FRP cable protective pipes varies from 50 to 200 mm and the thickness of the pipe wall is from 2 to 12 mm.

玻璃钢电缆保护管直径d为（50~200）mm，管子壁厚t为（2~12）mm，变化范围很大。

互联网摘选

For the U-shape pipe under consideration, it is shown that the thickness of U-shape pipe and coupling model have some influence on vibroacoustic radiation.

通过对U型管声振模型计算分析，发现壳体厚度和耦合振动模态对于受激振动辐射声场具有一定影响。

互联网摘选

The finite element model has been built by the study of the influence of element distribution in crack district, axial direction, annular direction and the thickness of the pipe.

研究了管轴向、管环向、管壁的单元分布的影响，建立了三通有限元模型，最终的有限元模型既能满足精度要求又能节省计算时间。

互联网摘选

The adopted thickness of steel pipe and the economic flow rate in it under different pressure and working conditions are described in this paper.

本文研究钢管的使用壁厚以及不同工作压力及使用状况下的经济流速。

互联网摘选

~ ( 75) Se Application to Butt-welding Seam Radiographic Test of Thin Thickness of Process Pipe

~（75）Se射线源在薄壁工艺管道对接焊缝射线检测中的应用

互联网摘选

Research on Non-uniform Wall Thickness of Thin-wall Pipe Rolled by Three-high Pipe Mill

三辊轧管机薄壁管轧制壁厚不均的分析蘑菇形轧辊的穿孔机

互联网摘选

Non-uniform wall thickness of steel pipe rolled on plug mill

自动轧管机组轧制钢管壁厚不均问题的研究

互联网摘选

Application of ultrasonic spectral analysis method to measuring the thickness of heat-exchanger pipe

超声频谱法在换热器内管壁厚测量中的应用

互联网摘选

A study on the change in wall thickness of steel pipe during hollow drawing

钢管空拔时壁厚变化的研究

互联网摘选

Influence of stretch reducing on wall thickness of steel pipe

张力减径对钢管壁厚的影响

互联网摘选

High-speed testing method for fold and wall thickness of a pipe

管材折叠缺陷及壁厚的同时高速检测方法

互联网摘选

Theoretical study of measurement for the wall thickness of transparent pipe

测量透明管壁厚的理论研究

互联网摘选

Experimental results show that the MRR increases with the increase of peak discharge voltage, discharge pulse-on time, discharge peak current and gas pressure, but decreases with the increase of pulse-off time and thickness of pipe wall.

材料去除率随峰值电压、峰值电流、脉冲宽度、气体介质压力的增大而增大，随脉间宽度、工具电极壁厚的增大而减小。

互联网摘选

In the paper, the strength of vertically laid pipeline is analyzed with the fourth strength theory, and the formula for the thickness of pipe wall is deduced, comparison with the similar formula is made and discussed.

通过垂直敷设管路受力分析，利用第四强度理论推导了垂直敷设管路壁厚计算公式。

互联网摘选

The coupler of Fe-Mn-Si-C alloys was developed and the influence of bearizing rate of coupler, connection length and thickness of pipe wall on the connection strength and pressure resistance was analyzed.

研制Fe-Mn-Si-C形状记忆合金管接头，并分析管接头扩孔率、连接长度、管壁厚度对连接强度及其耐压性能的影响。

互联网摘选

Nomograph for Calculating Thickness of Pipe

管子壁厚算图

互联网摘选

The effects of corrosion rate, defect depth, thickness of pipe and operation pressure on pipeline reliability were investigated with this model.

利用这一模型，研究了腐蚀速率、缺陷深度、管道壁厚和工作压力等因素对管线可靠性的影响。

互联网摘选