welded pipe, a kind of basic transport pipeline

welded pipe is also called welded steel pipe which is made of steel plate or strip by the process of welding equipment. There is a straight line in the weld of steel pipe so the name is called like that. The production technology of welded steel pipe is simple, the higher production efficiency, the lower equipment investment cost. Inspection method of welded steel pipe is adopting advanced nondestructive detection such as ultrasonic testing, magnetic test, penetration test etc.

Generally speaking, it is often used in low pressure fluid transport, such as water transportation and the transportation of natural gas, oil as well. The requirements for steel pipe quality are also very clear. The surface should be smooth and the defects of crack will not be allowed but the increased thickness of seam is allowed. The steel pipe prices is relatively cheap because of the simple processing which can not withstand heavy pressure.

According to the classification of production method, it can be divided into several types and the classification are arc welding tube, resistance welding pipe, furnace welding pipe. As a kind of common cold rolled steel pipe, its application range and filed are very widely. They are widely used in tap water engineering, petrochemical industry, chemical industry, urban construction and so on. You can use the same width billet producing different diameter welded pipe.

As international trade become more and more prosperous, the thing that making a difference between the words in the foreign trade English is necessary for the practitioners in this industry. For example, the word pipe and tube is different in foreign trade English and we may confuse about them easily, which will lead to some misunderstanding. The square tubing sizes are different, the diameter of pipe is more than 15mm and the tube diameter is less than 15mm. The difference between welded pipe and spiral welded pipe is the formation of welding, we have already illustrated that welding of welded pipe is a straight line and the spiral welded pipe’s welding is spiral. Spiral pipe is mainly used in oil and natural gas pipeline. In accordance with regulations, the welded steel pipe shall ensure its tensile strength and cold bending properties to withstand water pressure and guarantee the security of the project. When choosing steel pipe, you should pay more attention to the pipe quality and learn more knowledge about the performance of different types of steel pipes to make the construction project smoothly.