Pipe Inspection is a continuous process, Various inspections and tests are performed at all stages of manufacturing to produce a good quality pipe.
Metallurgical.
To confirm that the chemical requirements of pipe are as per the material standard. Normally known as Micro and Macro pipe inspection & testing.
Micro Analysis or Chemical Analysis of Raw material and Product.
Destructive.
To confirm the mechanical requirements of pipe are as per the material standard.
Tensile test is done to check the yield and ultimate tensile of the pipe Bend test / Guided bend test is used to check the integrity of weld joint Flattening test examines the ability of plastic deformation in a pipe Impact test / Charpy V-Notch Test, check the ability of a material to withstand low-temperature conditions
Hydro Test.
To Ensure that pipe is 100% leak proof and the ability of the pipe to withstand pressure.
Visual.
To check for surface imperfections such as mechanical marks, lamination, tears or any other visual imperfections and also check weld defects such as porosity and undercuts,
Dimension.
During a dimensional inspection, following to be confirmed with the standard Diameter, Length, Thickness, Straightness, Ovality and Weight
Marking.
To consist of Manufacturer logo, ASTM material code, Material Grade, Size, Thickness/schedule, Length and Heat number.
Packing.
To prevent the damage during transportation, pipe ends are covered with plastic cap,
Non-destructive.
To check whether any physical defects are present in the pipe/weld, which may affect its performance during the service. These testing are
- Flux leakage examination or Magnetic flaw detection
- Eddy current
- Ultrasonic
- Radiography
- Magnetic particle test
- Positive Material Identification.