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  • The procedure of Post Weld Heat Treatment projects is often recorded in a quality document beforehand. It lists the requirements that should be met for the relevant heat treatments and that will lead to a guaranteed result. Post Weld Heat Treatment (PWHT) is the international term for stress relief annealing: a heat treatment that is carried out – among other things – after welding work

  • We provide the following services to all types of industries, Project Procedures writing/review PQR Qualification WPS Qualification WPQ welder qualification Material receiving spool release Fit-up inspection Preheat inspection welding inspections NCR issuing and closing NDT witness RT film review PWHT inspection Hydro test package review Hydrotest inspection Reports

  • Preheating is the act of heating the base metal before starting to weld. It is considered very essential in high thickness materials, Cr-Mo Steels & HSLA High Speed Low Alloy steels, etc… Here we are going to answer the below topics What is Preheating ? Why is Preheat Essential ? What is difference between Preheat, interpass temperature and Post weld heat treatment? How

  • Once you have determined that the welding application requires preheating, consider the best method to use. Induction heating is one preheat option that provides consistent heat throughout the weldment. It offers fast time-to-temperature and is considered a very safe option for preheating. Photo courtesy of Miller Electric Mfg. Co. Preheating with an open flame from a torch is

  • Welding Welding is basically the mixing of abase metalwithfiller metal. Filler material is melted at high temperature through a consumableelectrodeand provides the relevant bonding strength. Filler metal and base metal are bonded together in one solid body. A good quality weld is at least as strong as the base material(s) being joined. Preheating Preheating is

  • Post-weld heat treatment or PWHT is a controlled process that involves reheating the metal below its lower critical transformation temperature, following a welding process. The material is then held at the elevated temperature for a predetermined period of time to alleviate residual stresses, increase the strength, increase or decrease the hardness, and reduce the risk of cracking by microstructural

  • PostHeating In case of alloy steel materials such as Cr-Mo stels, if the post weld heat treatment is not performed immediately after welding, then the weld joint and adjacent portion of pipe, at least 50 mm on either side of pipe, shall be uniformly heated to 300°C. This temperature shall be maintained for half an hour minimum, and then wrapped with mineral wool before allowing it to cool

  • Mechanical aptitude tests (MATs) measure your ability to understand mechanical and physical principles. The results may be used to determine your employability or potential for advancement. MATs involve an understanding of levers and pulleys, springs and electrical circuits, and tools and shop arithmetic. The most common MATs are the Bennett Mechanical Comprehension Test and

  • Many different types of welding inspection exist to keep pipes and structures safe and secure. Countless building codes require strict adherence to project plan specifications and inspection guidelines, according to Weld Procedures. The American Weld Institute usually produces code for multiple story structures, while the American Petroleum Institute issues construction and inspection guidelines for

  • We are happy to provide our services for all types of projects including oil and gas EPC projects all over the world for the followings All types of inspections Report making Procedure writing and review online coaching of cources. fitup and weld visual inspections. Report making and reviewing for all activities PWHT witness and checking Hydro-testing checking and report making Final

  • Chromium carbides form in stainless steels along either side of a weld. These carbides form where the metal is in the temperature range of approximately 1100 – 1500 F. Since the weld pool is well above this temperature and the base metal is below it, there is always some part of the welded part which was in that temperature range. The quantity of carbides which form depends on several factors,

  • APRIL 7, 2017Featured Stories Transmission pipeline welding often requires preheating of the weld zone to ensure that the joint achieves its required strength and hardness. Proper preheating also helps minimize the risk of delayed hydrogen-induced cracking, which is a significant concern that impacts weld quality and integrity in transmission pipelines. There are several heating methods

  • Radiographic Testing (RT)is anondestructive examination (NDE)technique that involves the use of either x-rays or gamma rays to view the internal structure of a component. In the petrochemical industry, RT is often used to inspect machinery, such aspressure vesselsand valves, to detect for flaws. RT is also used to inspect weld repairs. Compared to other NDE techniques,

  • Art of extracting maximum information from radiography image. This requires subjective judgment of the interpreter Interpretis to give the meaning of to explain.Evaluateis to determine the worth of something.Indicationis a density change appearing on a radiograph.False indicationsare film artifacts, screen Problems, fog, scatter x-ray diffraction.Discontinuityis

  • To ensure the satisfactory performance of a welded structure, the quality of the welds must be determined by adequate testing procedures. Therefore, they are proof tested under conditions that are the same or more severe than those encountered by the welded structures in the field. This page contains visual inspection tips. The following pages contain inspection methods for GMAW and physical weld


we provide the following services to all types of industries,

  • Project Procedures writing/review
  • PQR Qualification<br /><b>Notice</b>:  Undefined index: imgalt in <b>/home1/abicaecc/public_html/search.php</b> on line <b>420</b><br />
  • WPS Qualification
  • WPQ welder qualification
  • Material receiving
  • spool release
  • Fit-up inspection
  • Preheat inspection
  • welding inspections
  • NCR issuing and closing
  • NDT witness
  • RT film review
  • PWHT inspection
  • Hydro test package review
  • Hydrotest inspection
  • Reports review
  • Site inspection
  • Walk down of the project
  • Punch list creation 
  • Punch list closing
  • Dossier review
  • Dossier submission
  • Final handover of Project

 


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