Seamless steel pipe for steel structure refers to the action of external force metal strength, the ability to resist plastic deformation and fracture. Mainly for the execution of the standard structure with seamless steel tube is used for general structure and the mechanical structure of seamless steel tube.
Select seamless steel quenching method considers two main factors, the cooling rate is obtained to ensure the desired tissue hardening quenching first seamless steel; seamless steel uniform quenching followed by cooling, distortion is smaller, in order to ensure the subsequent step can be normal.
The storage of seamless steel tube, the first demand picking the right place, we need think about many external factors, corrosion of steel pipe and so on, so the site must be cleaned clean, dry and ventilated, harmful gas present, seamless steel tube is not present, weeds and other debris to keep clear of in time, to keep the steel surface clean.It is the most important things.
Mainly discuss the boiler seamless steel pipe, including the Low medium pressure boiler seamless steel pipe and high pressure boiler seamless steel pipe.
A seamless steel tube is made of a steel ingot or solid tube that is perforated into a capillary and then is made of hot rolled, cold rolled or cold.The specification of seamless steel tube is indicated by the outer diameter of the wall thickness millimeter.
Thick-walled seamless steel pipe prone to shoddy fold. Thick-walled seamless steel surface form a variety of polylines, which is often throughout the product vertical. The reason is due to shoddy manufacturers of folding the pursuit of high efficiency, reduction is too large, resulting in the ears, to produce a rolling when folded down, it will crack when folded products bending, thick-walled seamless steel pipe strength decline.
In a relatively short period of time so that steel pipe thickening, can produce non-standard, special type of seamless pipe, and low cost, high production efficiency, is the current international rolling pipe field development trend.
When the seamless steel pipe products meet the technical standards or customer requirements to the finished product tube to sell, and to ensure that customers seamless steel pipe quality and performance.
With the development of the national economy, all kinds of seamless steel tubes are widely used in petrochemical and boiler manufacturing and other industries, particularly high temperature, high pressure and harsh working conditions, on the quality of seamless steel tubes have higher requirements.
Using quality Carbon Steel Seamless Pipes for important productivity at work is extraordinarily necessary for manufacturing quality raw materials. Thus, the steel seamless pipes improves the output once one performs fastening as steel needs low maintenance and includes a high corrosion resistance. The steel seamless pipes in Asian country offered by purported supplier’s are available numerous sizes and specifications. The purported makers of the unsullied pipes use prime quality material equipped from accepted exporters World Health Organization supply prime quality steel solely.
Seamless steel pipe heat kneading skills is the primary international production skills thermal processing was seamless.
Austempering is to reduce the deformation of seamless steel tube and began to crack one of the effective method of quenching, but how to correctly use the process method is based on seamless steel tube material, size, hardness and toughness, the requirements of the deformation.
To meet the needs of nuclear power plant construction steel, requiring the production of stainless seamless steel pipe.
Large diameter seamless hot-rolled steel ingot casting can destroy tissue, grain refinement of steel and eliminate defects microstructure, so that the steel dense tissue mechanical properties are improved.
To eliminate error ellipse size and other defects of seamless steel tubes produced by rolling and heat treatment, generally using the sizing process. As the final production of seamless steel pipe manufacturing sectors sizing process determines the size and geometry of the tubular body, and also affect its mechanical properties.