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  • 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,

  • Ageing or Precipitation hardeningA low temperature heat treatment designed to produce the correct size and distribution of precipitates, thereby increasing the yield and tensile strength. It is generally preceded by a solution heat treatment. For steel, the temperature may be somewhere between 450-740 degree C, an aluminium alloy would be aged at between 100-200°C. Longer times and/or higher

  • PIPING HYDROSTATIC TESTING (OVERVIEW) Pressure source and test gauge should be upstream of check valve. If pressure source is downstream, check valve should have flapper removed or jacked?up. (Pressure must be released downstream of check valve after test completion.) Ensure that test blinds installed are the Correct thickness. Ensure that all items such as control valves, relief valves,

  • We all have probably heard about destructive testing in welding. After all, those of us who are certified welders or work at a place that needs to certify welding procedures, have at one time or another heard about a bend test, or a charpy v-notch test. However, there are several types of non-destructive testing available. As you can imagine, performing destructive testing on

  • Preheat in Welding: What Is It and When Should You Use It? Preheating in welding is used to help ensure weld quality and reduce the occurrence of cracking and other problems that can result in costly rework. Welding preheat is commonly used before welding steel or steel alloy pipes or plates that are 1 inch thick or more. Preheating is often required in shop and field welding for oil and

  • 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

  • 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

  • Ensuring a topnotch weld inspection program​ Ensuring that welders follow specific procedures is a crucial step in the overall welding quality system. There are a number of reasons to inspect a weld, the most fundamental of which is to determine whether its quality is good enough for its intended application. To evaluate the quality of a weld, it is necessary to

  • Austenitic stainless steels have high ductility, low yield stress and relatively high ultimate tensile strength, when compare to a typical carbon steel. A carbon steel on cooling transforms from Austenite to a mixture of ferrite and cementite. With austenitic stainless steel, the high chrome and nickel content suppress this transformation keeping the material fully austenite on cooling (The Nickel

  • Induction Heating The most common methods for achieving a more controlled preheat temperature are induction heating and electrical resistance heating. “The equipment used for induction is considerably more expensive than that used for electrical resistance heating,” said Fong. “However it does get your steel hotter quicker. It still offers you much more control than what you

  • 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

  • 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

  • Hydrostatic testing of the pipeline including riser should follow the below procedures: The pressure should be raised to the test pressure and allowed to stabilize then held for 15 minutes. The rate of pressure increase should not exceed 100 kPa (15 psi) per minute during all operations. The pressure should be lowered to approximately 25 percent of test pressure, allowed to stabilize then

  • Radiographic Testing Procedure This content provides you with a example Radiographic Testing Procedure. This is a general and sample RT procedure and you need to modify it to meet your project specifications. 1. SCOPE: 1.1-This Procedure describes the general requirements for radiography examination (RT) according to related approved weld map for the metallic welding and casting

  • Welding Inspection Procedure / Checklist This article provides you a general welding inspection proceduer. Stage 1 - Welding Inspection Prior to Welding Work Welding symbols and weld sizes clearly specified in drawing and related documents. Weld joint designs and dimensions clearly specified in drawings and related documents. Weld maps identify the welding procedure


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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