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The necessity of pickling seamless pipes
What is pickling: The method of removing scale and rust on the surface of steel with an acid solution is called pickling. Pickling acids include sulfuric acid, hydrochloric acid, phosphoric acid and mixed acids. The pickling process is to remove the oxide scale on the surface, and then lubricate ...Read more -
The introduction of carbon seamless pipe
Carbon seamless tube is a kind of long bar. The pipe has a hollow cross-section and is widely used as a pipeline for transporting fluids, such as pipelines for transporting oil, natural gas, gas, water and certain solid materials. Compared with solid materials such as circles, pipes have the same...Read more -
Environmental requirements for storage of seamless pipes
1) The site or warehouse where the seamless pipes are kept should be selected in a clean and well-drained place, away from factories and mines that produce harmful gases or dust. Remove weeds and all debris on the site and keep the steel clean; 2) Do not store acid, alkali, salt, cement and other...Read more -
hot rolled steel pipe
HOT ROLLED STEEL PIPE ERW (stretch reduction) Steel Pipe is made of high-quality coiled steel. The steel is cut lengthways after re-examination and then to be shaped to pipe automatically. Cleaning out burrs inside and outside of the pipe, while the computer controls the best melting temperature,...Read more -
Honed steel tube
Honed steel tube is a high- precision steel material by cold drawn or hot rolling process treatment. Because of the precision steel tube inside and outside wall without oxidation layer, under high pressure without leakage, high precision, high finish, cold bending deformation, flaring, flattening...Read more -
Difference between thread pipe and spiral pipe
Thread pipe and spiral pipe are one of welded steel pipe, but both there are essential differences. The form of thread pipe present in the tube end, the majority of the connection tube is used. Particularly in the pipe connections are optional steel pipe, which can be more secure. Thread pipe is ...Read more -
Features of SSAW steel pipe production process
The features of sprial steel pipe (SSAW steel pipe) a. molding process, the steel deformed uniformly, spiral steel pipe, residual stress, the surface does not produce scratches.Spiral steel pipe processing diameter and wall thickness in the range of sizes for greater flexibility, especially in th...Read more -
ERW pipe welding
So-called high-frequency, as opposed to the AC current frequency 50Hz, generally refers to 50KHz ~ 400KHz high frequency current. High-frequency current through the metal conductor will produce two kinds of strange effects: skin effect and proximity effect, high frequency welding pipe(erw pipe) w...Read more -
Galvanized welded steel pipe
Galvanized welded steel pipe is welded steel pipe, which is the pickling after the zinc in galvanized steel galvanized pool. Production processes of galvanized welded steel pipe is coated welding process that first hot-dip galvanized and hot-rolled steel, then galvanized steel coil slitting galva...Read more -
Defects of hot dip galvanized pipe
Defects of hot dip galvanized pipe In the production process and packaging process of hot dip galvanized, the appearance of hot dip galvanized steel strip and steel plate may occur following defects. The excess liquid zinc from galvanized pot on the strip surface, which excess liquid zinc air kni...Read more -
Consequences of seamless steel pipe friction
In the plastic deformation process of seamless steel pipe, the presence of friction is very negative and harmful consequences arising mainly as follows: 1) the presence of the steel pipe to change the distribution of frictional force when deformed, thereby causing the uneven distribution of stres...Read more -
Classfication of seamless pipe
According to the manufacturing process,seamless pipe can be divided into hot-rolled seamless steel tubes and cold-drawn seamless steel pipe two kinds. Cold drawn tube is also divided into circular pipe and shaped pipe. Seamless steel tubes is divided into the following categories because of diffe...Read more