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6检测承包商有义务提供安全的桁架。为了保证在适当条件下使用桁架,必须对其进行安全检测。在桁架首次投入市场前和首次使用前都需进行这类检测。为保证桁架组装和使用的安全,组装时和使用前必须进行检测,及时发现内在的缺陷和损伤并加以纠正;为了确认桁架在其使用期限内是否产生了缺陷或损伤并已得到矫正,对桁架的重复检测也是必须的;在重大改进或大修后,为验证桁架是否处于良好状态,也需要进行检测。
6 The inspection contractor is obliged to provide a safe truss. In order to ensure the proper use of truss, it must be safety testing. This type of inspection is required before the truss is first introduced into the market and for the first time. In order to ensure the safety of truss assembly and use, it must be detected during assembly and before use to detect and rectify the defects and damages in time. In order to confirm whether the truss has been damaged or damaged during its service life and has been corrected, Repeat testing is also necessary; major improvements or overhauls are required to verify that the truss is in good condition.