{"id":4773,"date":"2024-05-26T10:18:18","date_gmt":"2024-05-26T06:48:18","guid":{"rendered":"https:\/\/ppti.ir\/?page_id=4773"},"modified":"2025-08-10T10:06:40","modified_gmt":"2025-08-10T06:36:40","slug":"welding-inspection-and-non-destructive-tests","status":"publish","type":"page","link":"https:\/\/ppti.ir\/en\/welding-inspection-and-non-destructive-tests\/","title":{"rendered":"Welding inspection and non-destructive tests"},"content":{"rendered":"\t\t
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Weld Inspection<\/h1><\/span><\/span><\/div>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Non-Destructive Testing (NDT) has a magnificent role to control the quality during manufacturing and operation phases by identifying defects without damaging the component.
With official authorization and certification from the National Standard Organization of Iran, National Iranian Gas Company, and National\/International accreditations, Pouya Parto International Inspection Company delivers welding inspection services in a variety of industrial projects including power plants, bridges, dams, and residential\/commercial structures\u2014by experienced personnel and modern equipment.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t

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Welding Inspection Services by Pouya Parto <\/span>

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\u2022\tWelding inspection and Non-Destructive testing services:<\/h3>

\u2022\tVisual Testing (VT)\n\u2022\tPenetrant Testing (PT)\n\u2022\tMagnetic Particle Testing (MT)\n\u2022\tUltrasonic Testing (UT)\n\u2022\tPhased Array Ultrasonic Testing (PAUT)\n\u2022\tIndustrial Radiography Testing (RT)\n\u2022\tEddy Current Testing (ET)\n<\/p><\/div><\/div>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t

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\u2022\tPreparation of Welding Procedure Specification (WPS) and Procedure Qualification Record (PQR)<\/h3>

Preparing all documents and procedures for various welding processes and reviewing destructive test results per standards<\/p><\/div><\/div>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t

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\u2022\tWelder and welding operator qualification tests<\/h3>

o\tConducting qualification exams for manual and machine welding operators in accordance with standards and issuing competency certificates<\/p><\/div><\/div>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t

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\u2022\tPost Weld Heat Treatment (PWHT) and Portable Hardness Testing<\/h3>

\u2022\tPerforming heat treatment on pipelines, tanks, and industrial components, and conducting pre- and post-heat treatment hardness testing<\/p><\/div><\/div>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Types of Weld Inspection Methods<\/h2><\/span><\/span><\/div>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Weld inspection is broadly categorized into two main types: Non-Destructive Testing (NDT)<\/strong> and Destructive Testing (DT)<\/strong>\u2014each suited to identifying different types of flaws and inconsistencies in welds and metals.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Destructive Testing (DT)<\/h3><\/div><\/div>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Unlike NDT, these methods involve applying high stress to the material to determine its mechanical and chemical properties. They’re typically used to assess performance and reliability under real or simulated conditions:<\/p>

  • Tensile Testing<\/li>
  • Bend Testing<\/li>
  • Impact Testing<\/li>
  • Hardness Testing<\/li>
  • Chemical Testing<\/li>
  • Metallographic Examination<\/li><\/ul>

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    Non-Destructive Testing (NDT)<\/h3><\/div><\/div>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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    These techniques evaluate the quality, structure, and defects in materials without causing damage. These techniques are widely applied in construction, automotive, energy, and manufacturing industries to ensure safety and performance:<\/p>

    • Visual Testing (VT)<\/li>
    • Penetrant Testing (PT)<\/li>
    • Magnetic Particle Testing (MT)<\/li>
    • Ultrasonic Testing (UT)<\/li>
    • Radiographic Testing (RT)<\/li>
    • Phased Array Ultrasonic Testing (PAUT)<\/li>
    • Eddy Current Testing (ET)<\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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      Technical Inspection Stages at Pouya Parto<\/h2><\/span><\/span><\/div>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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      To achieve optimal quality in manufacturing industrial equipment and structures, welding inspection must be conducted throughout production in three main phases: pre-production, during production, and post-production. In addition, various elements must be inspected at each stage.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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      Pre-weld Inspection<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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      Before production begins, key aspects are reviewed to prevent defects:<\/p>

      • Reviewing drawings and technical specifications<\/li>
      • Choosing appropriate production and welding methods<\/li>
      • Selecting and inspecting materials and consumables<\/li>
      • Setting up welding equipment<\/li>
      • Evaluating operators, testing tools, and inspection instruments<\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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        In-process Weld Inspection<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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        This stage ensures proper execution and prevents potential defects:<\/p>

        • Inspecting prepared materials such as joint fit-up and surface prep<\/li>
        • Inspecting consumables<\/li>
        • Evaluating active operators and weld execution<\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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          Post-weld Inspection<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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          After welding process is completed, the following issues are examined:<\/p>

          • Visual inspection for weld defects like lack of fusion, penetration, cracks, convexity or concavity<\/li>
          • Weld dimensional check and assessment of distortion<\/li>
          • Further NDT methods such as PT, MT, UT, RT, and PAUT<\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

            Weld Inspection Non-Destructive Testing (NDT) has a magnificent role to control the quality during manufacturing and operation phases by identifying defects without damaging the component.With official authorization and certification from the National Standard Organization of Iran, National Iranian Gas Company, and National\/International accreditations, Pouya Parto International Inspection Company delivers welding inspection services in a variety […]<\/p>\n","protected":false},"author":15,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"_links":{"self":[{"href":"https:\/\/ppti.ir\/en\/wp-json\/wp\/v2\/pages\/4773"}],"collection":[{"href":"https:\/\/ppti.ir\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/ppti.ir\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/ppti.ir\/en\/wp-json\/wp\/v2\/users\/15"}],"replies":[{"embeddable":true,"href":"https:\/\/ppti.ir\/en\/wp-json\/wp\/v2\/comments?post=4773"}],"version-history":[{"count":20,"href":"https:\/\/ppti.ir\/en\/wp-json\/wp\/v2\/pages\/4773\/revisions"}],"predecessor-version":[{"id":5088,"href":"https:\/\/ppti.ir\/en\/wp-json\/wp\/v2\/pages\/4773\/revisions\/5088"}],"wp:attachment":[{"href":"https:\/\/ppti.ir\/en\/wp-json\/wp\/v2\/media?parent=4773"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}