Discussion on the developing direction of steel tubes by comparing processing of seamless tube and welded tube;
从焊管与无缝管的综合比较浅析钢管发展方向
China steel tube trade is being a turning point, concerning which should take the first place between seamless tube and welded tube.
目前中国的钢管业正处在一个新的发展转折点和平衡点,尤其是无缝管和焊管的争论已成为近几年的焦点。
This paper describes the deformational characteristic of different kinds of cross-rolling process, sumerizes the law of development cross- rolling elongation and reveals the tendency of hot elongated accurate seamless tube.
本文阐述了不同无缝管斜轧延伸变形过程的特点，总结了斜轧延伸的发展规律，揭示了 热轧精密无缝管的发展趋势。
Investigation on seamless pipe internal infolding rolled with CC bloom;
Φ180mm连铸坯轧制无缝管内折缺陷调查
The seamless pipe which was rolled from continuous casting round section stock exists great deal of cracks on the traverse section acid etched slices.
针对由连铸圆管坯轧制的无缝管在横向低倍酸浸试样上存在的大量周向裂纹,通过采用低倍、金相、电镜及能谱各分析手段,进行了全面的研究,找出了导致这些裂纹形成的原因。
Through comparison of the corresponding quality standard of ERW pipe with that of seamless pipe,it analyzed advantage of expansion pipe using ERW pipe.
介绍了膨胀管膨胀后各项指标的变化情况,并对强度变化的原因进行了较为详细的分析;通过ERW焊管与无缝管相关质量标准的对比,分析了ERW焊管用作膨胀管所具有的优势,并指出,ERW焊管相对于无缝管具有较多优点,基于膨胀管技术对管材的要求,ERW套管用作膨胀管要优于无缝管。
The influence of over-heat and draw speed on inner fold defects of seamless steel tube is analyzed in hot test process of 20 steel from point of view of inner solidified organization of CC billet.
从连铸坯内部凝固组织的角度出发,分析了20钢在热试过程中,过热度、拉速对无缝管内折缺陷的影响,并提出了改善内部组织的措施,以减少内折废品的产生。
In order to strengthen the oil-field user’s confidence in the ERW casing made in China,the contrast study of the dimension control,residual stress,and pipe collapse pressure between ERW and seamless casing was conducted in this paper.
为了促进国产直缝电阻焊(ERW)套管在油田的广泛应用,对ERW套管与无缝套管的尺寸精度、残余应力和管体挤毁压力进行了试验研究。
Present Status and Development of Alloy Steel Seamless Tube;
合金钢无缝钢管的现状和发展
Analysis on stretch reducing rolling process of seamless tube by FEM;
无缝钢管张力减径过程的有限元分析
Development of round billet of heat resistant stainless steel seamless tube for high pressure boiler
高压锅炉用耐热不锈钢无缝钢管圆管坯的研制
Technological transformation of enterprises produced medium diameter seamless steel tube with cold drawn processing;
冷拔中径无缝钢管生产企业的技术改造
Discussion on development countermeasures to seamless steel tube technical equipment in China;
中国无缝钢管技术装备的发展对策探讨
Present situation analysis of Chinese seamless steel tube technology equipment;
中国无缝钢管技术装备的现状分析
Niobium seamless tubes
GB/T8183-1987铌无缝管
A metallic bellows is made from a thin seamless tube.
金属波纹管是由薄壁无缝管制成的。
Tantalum and tantalum alloy seamless tubes
GB/T8182-1987钽及钽合金无缝管
Zirconium and zirconium alloy seamless tubes for nuclear application
GB/T8768-1988核工业用锆及锆合金无缝管
Steel butt-welding seamless pipe fittings
GB/T12459-1990钢制对焊无缝管件
Seamless copper alloy tube for condenser and heat-exchanger
GB/T8890-1998热交换器用铜合金无缝管
Study on Corrosion of Underground Metal Seamless Pipeline in ShenZhen City;
深圳市埋地金属无缝管道的腐蚀研究
seamless fuel clad tube
无缝燃料元件包壳管
Seamless steel tubes and pipes for high pressure boiler
GB5310-1995高压锅炉用无缝钢管
Seamless hot--Rolled steel tubes for hydraulic pillar service
GB/T17396-1998液压支柱用热轧无缝钢管
Carbon steel seamless steel tubes for ship
GB/T5312-1985船舶用碳钢无缝钢管
Seamless steel tubes for petroleum cracking
GB9948-1988石油裂化用无缝钢管
All gas line joints shall be orbital welded except those connecting to valves.
所有气体管路的连接采用无缝焊接。
Stainless steel seamless tubes for structures
GB/T14975-1994结构用不锈钢无缝钢管
Cold drawn seamless special-shape steel pipe
GB/T3094-1982冷拔无缝异型钢管
Stainless steel seamless pipes for fluid transport
GB/T14976-1994流体输送用不锈钢无缝钢管
Seamless steel pipe and tubing--Methods for ultrasonic testing
GB/T5777-1996无缝钢管超声波探伤检验方法
Seamless steel tubes standard use diamond core drilling
GB3423-1982金刚石岩心钻探用无缝钢管