Detection method of straight seam piling pipe after weld reinforcement

Straight seam piling pipe finished weld reinforcement detection methods are mainly the following:
First, the physical method for testing: testing the physical phenomena is measured using some physical or testing methods. Material or workpiece internal defects of the inspection, are generally used NDT methods. There are currently NDT ultrasonic testing, radiography, penetrant testing, magnetic testing and so on.

Density test: Storage containers of liquid or gas welding, the weld is not dense defects, such as penetrating cracks, porosity, slag, incomplete penetration and loose tissue, etc., can be used to find the density test. Density test methods are: kerosene test, ballast water test, water will test.
Judgment on the surface, which is in appearance inspection. Visual inspection of welded joints is a widely used procedure is simple but testing methods, is an important element of product testing is mainly found in the weld surface defects and size bias. Generally observed by the naked eye, with the standard model, gauges and inspection tools such as a magnifying glass. If the weld surface defects, weld defects there may be internal.

Pressure vessel strength testing: pressure vessels, in addition to tightness test, but also a strength test. Common with hydrostatic testing and pressure testing two kinds. They can work under pressure testing containers and piping welds compactness. Pressure test is more sensitive than the hydrostatic test and speed, while testing the product after processing without drainage, drainage problems for products is particularly applicable. But the test is more dangerous than a large hydrostatic test. When tested, it must comply with the appropriate safety precautions to prevent accidents during the test.