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  • 2020-06-03

    Ball and socket couplings of string insulator units test According to IEC60120-2020,ANSI/NEMA C29.2B-2013
    The tolerance for the gauges follows the connection standard. For the ball eye, ball clevis, and socket clevis, test gauge is a necessary way to control quality. The “GO” gauge should ask all parts pass through, and the “NO GO” gauge should ask all parts not pass through, only the two gauges both act well, the pars can pass the test gauge.
  • 2020-06-03

    Rockwell Hardness Test According to ASTM E18-2019 / Brinell Hardness Test According to ASTM E10-2018
    The application of hardness testing enables you to evaluate a material’s properties, such as strength, ductility and wear resistance, and so helps you determine whether a material or material treatment is suitable for the purpose you require,Especially after heat treatment, it can ensure the performance of the material after heat treatment. 
  • 2020-06-02

    Magnetic particle test standard practice According to ASTM E1444/E1444M-2016
    The magnetic particle testing method is used to detect cracks, laps,seams,inclusions,and other discontinuities on or near the surface of ferromagnetic materials.Magnetic particle testing may be applied ti raw material ,billets,finished and semi-finished materials,welds,and in-service parts.Magnetic particle testing is not applicable to non-ferromagnetic metals and alloys such as austenitic stainless steel. 
  • 2020-06-03

    Galvanized Thickness Test According to ISO1461-2009,BS729-1971,ASTM A153/A153M-16A
    The test device should be calibrated per 500 times. It’s essential to calibrate the equipment before each testing.According to standard ISO1461-2009,BS729-1971 or ASTM A153/A153M-16A.Based on meeting the zinc layer requirements, also try our best to ensure that the surface smoothness meets the requirements.Also we test zinc layer adhesion by hammering test.
  • 2019-07-02

    Tensile tests before finalized the design and before delivery according to IEC61284-1997 & IEC61109-2008 & IEC60383-1-1993
    Test for overhead line fittings based on IEC61284-1997 standard.Tensile strength test for composite suspension and tension insulators for a.c. systems with a nominal voltage greater than 1,000V based on IEC 61109-2008 standard.Tensile strength test for insulators for overhead lines with a nominal voltage above 1000 V - Part 1: Ceramic or glass insulator units for a.c. systems - Definitions, test methods and acceptance criteria based on IEC 60383-1993 standard.