Study On The Application Of The Standards Used In The Inspection On Petroleum Steel Pipes

With the rapid growth of energy demand in China, it promote the rapid development ofthe pipeline construction. It is important that API series of standard-system can ensure ofreliability of the pipeline service. This subject analyzes the performance characteristics of theoil pipeline, summed up the method of the inspection standard and experimental in used. Thepaper present some of the principle and method of the experiment. Analysis of existing testevaluation system and the actual test in the problem of cohesion, puts forward someSuggestions for improvement; in the end,it introduce part of the computer technology used inthe Used in the inspection on Petroleum steel pipe.Results show that in terms of utility, theexisting standard evaluation system of basic can meet the needs of the steel tube of routinephysical and chemical inspection, but there are still many problems in the implementation ofspecific details, need further explanation, such as in charp-V type impact test, the impact crosssection subject to cracking tip position, gap position are the important factors that influencethe impact; The impact toughness of welded joint acceptance value increase with the increaseof strength of steel pipe and pipe diameter, and the acceptance value higher than that of weldacceptance of heat affected zone; DWTT drop hammer experiment, when the sample quantityis small, can experiment with air as medium, and when the sample quantity is large, avoid longcooling time, limited number, can be used in the process of producing alcohol as a coolingmedium experiment; With the aid of computer image technology, can complete the tediousmanual image computation, with efficient, flexible, and reduce the artificial error probability,the advantages of mass detection can meet the future requirements.