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  Our Services Why pre

  Why is preheat sometimes required before welding? Preheating the base material to be welded minimises the temperature difference between the material and the arc, slows the cooling rate in the weld area and reduces the risk of cracking. The need for preheat increases with steel thickness, weld restraint, the carbon/alloy content of the steel, and the diffusible hydrogen of the weld metal. Preheat
  

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  Our Services Radiograph

  In addition to producing high quality radiographs, theradiographer must also be skilled inradiographic interpretation .Interpretation of radiographs takes place in three basic steps: (1) detection, (2)interpretation , and (3)evaluation . All of these steps make use of the radiographer'svisual
  

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  Our Services Welding Quality

  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
  

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  Our Services Preheating

  Preheating Heat treatment of welds is a critical activity which needs to be carried out before and after the welding process. Heat treatment before welding (Preheating) is necessary to bring the base weld metal at proper temperature. No welding shall be performed without preheating the joint to 10°C (50°F) when the ambient temperature is below 10° C. Preheating requirements for
  

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  Services at SARB 4 project

  We provide services as individualsto the project for the inspection of welding including fit-up inspection, weld visual inspection, line alignment inspection, dimension inspection of the modules. weld visual inspection of steel structure, preheat inspection, PWHT inspection, hydro test inspection, final walk down, punch list preparation, final dossier review. About the project: Satah
  

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  Our Services Post Weld

  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
  

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  Our Services Why Pre

  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
  

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  Our Serices Preheating

  A crucial step in many welding applications, preheating slows the rate of cooling in a finished weld, lowers the amount of hydrogen in it, and reduces the risk of cracking. Artificially introducing heat into the base metal — by means of an external heat source — adds a step to the welding process; however, it can save you time and money in the long term by reducing the potential for a failed
  

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  Our services at Duvha

  We provided the inspection activities for the duvha power plant boiler explosion situation. the inspection activities includefit-up inspection, welding inspection, dimension inspection, pre-installation inspection and installation inspection as well. The procurement process followed the requirements of the Preferential Procurement Policy Framework Act (PPPFA) and the qualifying supplier was
  

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  Our Services Quality

  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
  

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  Our Services Inspection

  Welding Procedures are the guidelines used to perform a weld. They are designed to provide a record of the welding variables used and the inspection results obtained during the procedure qualification test. They can also provide the instructions for the welder to use in production in order to produce acceptable welds. Usually welding procedures are developed in accordance with a welding code or standard,
  

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  Our Services Radiograph

  The major objective of radiographic testing of castings is the disclosure of defects that adversely affect the strength of the product. Castings are a product form that often receive radiographic inspection since many of the defects produced by the casting process are volumetric in nature, and are thus relatively easy to detect with this method. These discontinuities of course, are related to casting
  

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  Our Services Requirements

  Before applying for the detailed PWHT requirements and exemption in these paragraphs, satisfactory weld procedure qualifications of the welding procedures specification to be used shall be performed in accordance with all the essential variables of ASME SECTION IX including conditions of post-weld heat treatment and including other restrictions listed below. While carrying out local post-weld
  

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  Our Services Industrial

  Industrial Inspection Inspection 4 Industry LLC,Provides Global Industrial Inspection Services. The services covers shop inspection, site inspection and plant inspection. The articles are about different inspection field categories such as shop inspection, site inspection, and in-service inspection requirements. The articles present you applicable codes and standards. There will also
  

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  Our Service for Post Weld

  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 review
• Site inspection
• Walk down of the project
• Punch list creation 
• Punch list closing
• Dossier review
• Dossier submission
• Final handover of Project