This part of GB/T 33488 specifies the general requirements, testing methods, result evaluation and testing reports for the appearance testing methods of plastic welding pressure-bearing equipment for chemical industry. This section applies to polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), acrylonitrile-butadiene-styrene plastics (ABS), polyvinylidene fluoride (PVDF) and modified polytetrafluoroethylene Appearance inspection of pressure vessels and pressure pipe welded joints made of thermoplastic pipes or plates such as fluoroethylene (PTFE), and welded by hot air welding, extrusion welding, hot fusion welding and electric fusion welding.
GB/T 33488.2-2017 Referenced Document
GB 11533 Standard for logarithmic visual acuity charts
GB/T 20967 Non-destructive testing-Visual testing General principles
GB/T 20968 Non-destructive testing.Aids to visual inspection.Selection of low-power magnifiers
GB/T 33488.1 Test method of pressure equipments of thermoplastics welded for chemicals—Part 1: General requirements
GB/T 9445 Non-destructive testing.Qualification and certification of NDT personnel
JB/T 12530.2 Nondestructive testing of weld joint of thermoplastics.Part 2: Visual examination
GB/T 33488.2-2017 history
2017GB/T 33488.2-2017 Test method of pressure equipments of thermoplastics welded for chemicals—Part 2: Visual examination