How to ensure the natural gas pipeline without leakage?The quality of submerged arc welded steel pipe is the first place!
Natural gas is a city's top priority for energy supply, as a living energy, not only for business and residents to provide convenience and environmental protection, in the whole city's economic development also plays a key role. Pipeline transport is the safest and most economical way to transport natural gas, natural gas pipeline construction requires huge submerged arc welded steel pipe as a support, and natural gas is a volatile, flammable and explosive gas, if the quality of the submerged arc welded steel pipe is not up to standard, it is very likely to leakage, which will lead to a series of disasters, such as explosions, fires and other disasters, so to ensure that the natural gas pipeline is not leaking, the quality of submerged arc welded steel pipe is the first place.
Natural gas pipeline transport safety should not be underestimated, from the pipeline's own quality and factory testing capabilities and other aspects should be strictly controlled, general submerged arc welded steel pipe will be tested before leaving the factory, only qualified submerged arc welded pipe can be put into the natural gas pipeline construction.
First, submerged arc welded steel pipe - ultrasonic flaw detection
Cracks, unfused and unwelded, etc. is a very dangerous steel pipe weld defects, if the leakage detection, the future will bring hidden danger to the safe operation of natural gas pipelines, ultrasonic testing is the use of defects in the interface reflection wave to determine the size of the defect, oil and gas transmission steel pipe weld defect detection sensitivity (refers to the ultrasonic detection system can detect the smallest defects in the ability) rely on the calibration equipment for the sample pipe of the artificial reflector (artificial defects) to Guarantee. The smaller the size of the artificial reflector can be detected, the more locations, the stronger the detection ability of ultrasonic equipment.
Ultrasonic flaw detection as a high sensitivity weld nondestructive testing methods are widely used in the field of steel pipe inspection, high sensitivity to linear and area defects detection, detection of fast and efficient, relying on ultrasonic flaw detection can ensure the quality of submerged arc welded steel pipe welds.
With the increase of natural gas transmission and pressure, the wall thickness of submerged arc welded steel pipe is also increasing, and the detection technology of thick-walled steel pipe is also being further improved to ensure the normal detection of defects in full wall thickness.
Second, submerged arc welded steel pipe - X-ray industrial TV inspection
In the weld X-ray inspection, X-ray industrial TV inspection can be in accordance with a certain speed of dynamic real-time scanning of the weld, timely detection of welding defects through the display, but also can be scanned and recorded in the computer in a part of the weld image for static observation and evaluation to ensure the sensitivity of the flaw detection.
X-ray industrial TV inspection for submerged arc welding steel pipe weld detection, high sensitivity, fast imaging speed, can greatly improve production efficiency.
Third, the summary
In addition to the above 2 submerged arc welded steel pipe testing, Huayang Steel Pipe also has a series of sophisticated testing equipment and testing methods such as hydraulic test, universal testing machine, metallurgical testing machine, etc., and spend a huge amount of money to set up a physical and chemical testing centre, testing centre and other links to ensure the quality of submerged arc welded steel pipe.
Only the quality of submerged arc welding steel pipe is guaranteed to ensure the safety of natural gas transmission after construction, to ensure the safe use of natural gas pipelines from the source and reduce the occurrence of accidents and property losses.
