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Casing & tubing pressure rating
Casing pressure rating Out diameter mm Inner diameter mm Internal pressure strength Mpa External collapse strength Mpa Internal volume L/m 73.03 62.0 72.9 76.9 3.02 88.9 76.0 70.1 72.6 4.54 Tubing pressure rating Out diameter mm Inner diameter mm Internal pressure ...Read more -
Application of seamless steel pipe in construction industry
Among the many pipeline materials, the most practical one is seamless pipe (SMLS), which is a relatively powerful pipeline material, not only because of the wide range of application fields and scope of this pipeline material, but more importantly, Because the quality of seamless steel pipe is ve...Read more -
Resistance welding method
There are many types of electric resistance welding(erw), and there are three types of welding, seam welding, butt welding and projection welding. First, spot welding Spot welding is a method of electric resistance welding in which a weldment is assembled into a lap joint and pressed between two ...Read more -
Quality inspection method of spiral pipe
The quality inspection method of spiral pipe (ssaw) is as follows: 1. Judging from the surface, that is, in visual inspection. Visual inspection of welded joints is a simple procedure with various inspection methods and is an important part of finished product inspection, mainly to find welding...Read more -
Seamless tube eddy current flaw detection
Eddy current flaw detection is a flaw detection method that uses the principle of electromagnetic induction to detect surface defects of components and metal materials. The detection method is the detection coil and its classification and the structure of the detection coil. The advantages...Read more -
Corrosion in drilling pipe
What is the main difference between corrosion fatigue fracture and stress corrosion fracture of drill pipe? I. Crack initiation and expansion: Stress corrosion cracks and corrosion fatigue cracks are all sent to the surface of the material. Under strong corrosive media and large stress conditions...Read more -
Seamless steel pipe schedule
The steel pipe wall thickness series comes from the British metrology unit, and the score is used to express the size. The wall thickness of the seamless pipe is made up of the Schedule series (40, 60, 80, 120) and is connected to the weight series (STD, XS, XXS). These values are converted to mi...Read more -
Raw material and production process of steel
In daily life, people always refer to steel and iron together as “steel”. It can be seen that steel and iron should be a kind of substance; in fact, from a scientific point of view, steel and iron have a little Different, their main components are all iron, but the amount of carbon co...Read more -
Precautions when washing seamless tubes
When processing seamless tubes in seamless steel tube factories, pickling is used. Pickling is an indispensable part of most steel pipes, but after pickling seamless steel tubes, water washing is also required. Precautions when washing seamless tubes: 1. When the seamless tube is washed, it needs...Read more -
Surface treatment of spiral welded pipe
Spiral welded pipe (SSAW) rust removal and anticorrosion process introduction: Rust removal is an important part of the pipeline anticorrosion process. At present, there are many rust removal methods, such as manual rust removal, sand blasting and pickling rust removal, etc. Among them, manual ru...Read more -
Small-diameter welded pipe
The small-diameter welded pipe is also called small-diameter welded steel pipe, which is a steel pipe made by welding a steel plate or a strip steel after being crimped. The production process of small diameter welded pipe is simple, the production efficiency is high, there are many varieties and...Read more -
Production process requirements for seamless tubes
The scope of application of seamless tubes in production and life is getting wider and wider. The development of seamless tubes in recent years has shown a good trend. For the manufacture of seamless tubes, it is also to ensure its high-quality processing and production. HSCO has also been accept...Read more