Threaded connection is a widely used removable fixed connection, with the advantages of simple structure, reliable connection, convenient installation and disassembly.
Teencher Inspection team consists of professional quality control and international trade experts, each member with extensive inspection experience and very strong sense of service. our inspection can help you to reduce logistics costs, return risk, complaints, compensation and potential brand reputation due to quality problems.
1.Inspection Environment and Requirement
-Requirement for place of inspection:Light from a power of at least 500 Lux.
-Perspective:The products must be tested by every angle.
-Distance of viewing:In doubts, check the products from a distance of 30 cm. If it is not visible, it is no defect. View the items by various angles.2.Visual NonConformities Standard
Visual nonconformities as stated below are typical defects during production and must be handled either by means of suitable measuring or comparison practices. A practical method is to compare defects either against the specification guide or against provided samples.
-Not permitted any sharp point/sharp edge.
-Not permitted infestation of live insect.
-Not permitted blood mark
-Not permitted heavily odor.
-Not permitted crack mark,chipped edge, burr mark,dent mark,scratch mark etc.
-Not permitted deformantion etc.
-Not permitted rust mark.
-Not permitted water spot,color stain,oil stain,dirty, impurity mark etc.
3.Field Test & Measurement
-Color shade check
-Smell check
-Product dimension check
-Product weight check
-Tensile strength test
-Quantity per carton check
-Carton dimension check
-Carton gross weight check