钢级

为了实现钢级识别，还需要通过实验获得相关钢级同标准材料的差异数据并存入数据库。

In order to achieve identification of steel grade , we also need to do experiments to obtain different data of the relevant steel grade and put these data into the database .

我公司提供不同钢级、多种规格的ERW石油钢管。

Our company can provide various steel grade and specification ERW oil pipes .

由新日铁ERW套管看我国高钢级ERW套管的发展

The Development of China High Grade ERW Casing From the View of Nippon ERW Casing

高钢级X80管线钢工艺、组织与性能的研究

Research on Processing , Microstructure and Properties of X 80 High Grade Pipeline Steel

高钢级管线钢的常规TMCP工艺与HTP工艺

Normal TMCP and HTP Technologies for High Grade Pipeline Steels

探讨了我国X80以上钢级管道焊接材料研制的思路；

The development thinking of welding material above grade X80 pipe in China is discussed .

讲述了国内开发油气输送用X80钢级焊管三个过程。

It mainly describes the three courses of developing grade X80 welded pipes for oil and gas transmission in China .

根据目前高钢级板卷的生产状况，结合API取样标准要求，设计出一套在线式厚板取样机，能显著提高API要求取样速度，满足快速在线生产检验的要求。

Base on the status of metal strip manufacture and API sampling standard required , we design an on-line metal strip sampling equipment which can increase the speed of API sampling standard required . On-line inspection can be carried out rapidly .

稀土在J－55钢级套管钢中有净化钢液，变质夹杂和微合金化作用，提高了钢的横向冲击值和抗裂纹扩展能力，显著改善了抗射孔开裂性能。

He effects of rare earth on purifying molten steel , modifying inclusion and micro-alloying are studied in J-55 Steel . The results show that RE improves the transverse impact energy and increases the resistance of perforation cracking .

对X80钢级直缝埋弧焊管管体的应变时效行为进行了试验模拟，结果与分析相吻合。

Then the strain aging behavior of X80 grade LSAW pipe body was conducted a test simulation and the result coincide with the former analysis .

通过对X80高钢级直缝埋弧焊管力学性能试验研究，得到了各项力学性能参数，并对其数据进行了分析。

Each mechanical properties parameter obtained and its data analyzed through investigation to mechanical properties test of Grade X80 high grade longitudinal submerged arc welded pipe .

综述了国外在高钢级X80管道钢管方面的开发和应用状况。

This paper gives an overview of manufacturing high-strength grade X80 line pipe , discusses design aspects including fracture inition , arrest and weld strength mismatch .

试验结果和分析结果表明，N80、P110钢级材料的压缩屈服强度高于拉伸屈服强度；

The testing and analyzing results show the compression yield strength of the steel grades of N80 and P110 are greater than the tension yield strength .

对某厂X80高钢级管线钢母材、焊缝、热影响区进行了夏比冲击韧性试验，对其有效晶粒进行了研究。

The Charpy impact test of base metal , weld and heat affected zone of X80 grade pipeline steel of certain factory was conducted , and its effective grain was researched .

利用力学实验及EBSD等微观分析手段，研究表征高钢级管线钢的特征参数，并探讨其对强韧性的影响。

The characteristic parameters of high grade pipeline steels were investigated , and their effects on toughness were explored by means of mechanical testing and microstructural analysis as EBSD ( Electron Backscattered Diffraction ) and SEM .

介绍了采用不同焊料和在不同焊接条件下进行的X-65钢级无缝管的对接焊试验。

The paper describes the experiments concerning butt-welding of the X-65 Grade seamless steel line pipes with different fluxes and under different welding conditions .

采用单级和多级膨胀心头，在相同工况下对N80钢级2445mm套管膨胀至2985mm的过程进行计算机模拟，得出2种膨胀心头膨胀后套管的等效应力、接触应力和轴向收缩量模拟曲线。

The process of expansion of casing with single-stage and multistage expandable bodies is simulated on computer , and the curves of equivalent stress and contact stress and axial shrinkage of the bulged casing are obtained .

针对完整性管理、高温轧制工艺（HTP）、高钢级管线钢的韧性止裂、基于应变的设计以及抗大变形钢的开发等做了概括性论述。

Furthermore , it also gives some summary about the integrity management , HTP rolling procedure , ductile fracture arrest of high grade steel , strain-based design , and development of high deformability steel .

通过对X70、X80钢级直缝埋弧焊管分别取试样，在不同的试验条件下进行了拉伸试验和夏比冲击试验，试验结果表明①焊管抗拉强度和伸长率无明显变化；

Samples from X70 、 X80 steel longitudinal pipes is conducted for tensile test and Charp impact test under different test conditions , and the test results shows ① There is no clearly changed on elongation ratio and tensile strength of pipe ;

试验表明：采用特殊的接头焊接技术焊接的X-65钢级管线，可以输送酸性油、气；

Results of the said experiments show that X - 65 Grade line pipes jointed with the special butt-welding technique can be used for acid oil / gas transport .

在苏丹管线用螺旋埋弧焊管生产过程中，根据钢级及强度匹配要求，选用J557焊条作为打底焊材料。

During the manufacturing of SSAW pipe for Sudan pipeline , J557 electrode shall be applied as bottom weld materials according to the matched requirement of grade and strength .

包钢通过对N80Q钢种和热处理工艺的研究，成功地开发生产了性能满足标准要求和用户需要的N80Q钢级石油套管。

Through researching N80Q steel kind and the heat treatment technology , we have successfully developed and produced N80Q grade oil casing which meets the API standard and the user 's requirement .

对三种高钢级油井管（C90、G105、P110）的应力松弛特性进行了研究，并测量了这些材料制造的无缝钢管经不同温度温矫后残余应力的变化。

The stress relaxation characteristics of three kinds of high grade oil well pipe steel were studied , and the residual stresses after warm straightening at different temperature in pipes made of these steels were measured by means of X ray diffraction .

滚动式冷床在高钢级油管生产线中的应用

The application of rolling-type cold bed to high-strength oil pipe line

高钢级管线钢的特征参量及其与强韧性的关系

Characteristic Parameters of High Grade Pipeline Steels and Its Relationship with Toughness

国内外高钢级管线钢的开发与应用

Development and Application of High Grade Pipeline Steel at Home and Abroad

高钢级天然气输送管线钢强度特性

The Strength Characteristic of High Grade Gas Transmission Pipeline Steel

高钢级管线钢管研制过程中的几点注意事项

Cautions During Research and Development High Grade Pipeline Steel Pipe

高钢级管线钢管环焊缝高强匹配研究

High Strength Matching Study on Circumferential Weld of High Grade Line Pipe

冷却速度对25MnV/P110钢级石油套管相变规律的影响

Influence by Cooling Velocity on Phase-change Law of 25MnV / P110 Oil Casing