Elbow manufacturers are satisfied with the require

Elbow manufacturers are satisfied with the requirements of users

Elbow manufacturers have sufficient supply, caliber model standard, wall thickness model complete, not easy to deformation, easy installation, stable structure, long service life, convenient connection, is one of the indispensable pipe installation around the world.

Elbow manufacturers can be divided into 45 degree elbow, 90 degree elbow and 180 degree elbow according to the Angle, and sometimes there will be 60 degree elbow and other Angle elbow. Is widely used in a variety of pipeline systems, due to the increase of elbow wall thickness, resulting in reduced elbow flexibility, so that the pipeline to the equipment thrust and push torque increase, and will increase on the equipment push torque will also increase. Therefore, in the design of the elbow, according to the interface provided by the manufacturer to allow the thrust and push the torque value can meet the change of the thrust caused by the change of the wall thickness of the elbow. If not CONSIDERED AT THE time OF fabrication, the increase in wall thickness will result in increased thrust from the pipe to the equipment interface, which will result in the remachining of the elbow. Greatly reduced work efficiency.

Thick-walled elbow stress influence of the pipes, we have to know the thick-walled elbow wall thickness change before and after the stress variation in the elbow, elbow after if elbow thickness increase for the first time to measure the stress of the weakening trend, and secondary stress on the rise trend, if the change control within 20%, according to the regulation, under the condition of without considering other factors, When the pressure in the pipe is unchanged, the stress strengthening factor decreases with the increase of wall thickness, resulting in the reduction of the primary stress of the elbow. The secondary stress will increase with the increase of wall thickness.

The effect of thick-wall elbow on the pushing torque of the equipment interface, because the thickness of the elbow wall increases, the resultant force and the torque increase at the same time, the increase range is up to 50%. It is due to the increase of elbow wall thickness that the bend flexibility coefficient changes. Therefore, once the elbow is found to have increased mass or wall thickness significantly exceeding the standard, the pipe load should be recalculated to check whether it can meet the service requirements.

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