Sinosteel Stainless Steel Pipe Technology (Shanxi) Co., Ltd. products

It is a product with an outer diameter greater than 540mm and a thickness-to-diameter ratio greater than or equal to 3%. It has the characteristics of high temperature resistance, high pressure resistance, corrosion resistance, etc. The product is mainly used in petroleum refining, hydrocracking equipment, high temperature synthesis equipment and other fields.

It is a product with an outer diameter greater than 540mm and a thickness to outer diameter ratio less than 3%. It has the characteristics of corrosion resistance, energy saving and environmental protection, and long service life. It is mainly used in ventilation, water supply, gas drainage, food, medicine and other industries.

Welded steel pipes with an outer diameter less than 540mm are mainly divided into: Lined pipe: It has the characteristics of corrosion resistance, high temperature resistance, low temperature resistance, etc., and is mainly used in harsh environments such as long-distance oil transportation, liquefied natural gas, and seabed.

It is a stainless steel pipe with a special shape. It is different from the conventional round shape and is a highly customized product. Square and rectangular pipe: It is a name for square pipe and rectangular pipe. The strip steel is unpacked, flattened, curled, welded and other processes to form round tubes, which are then rolled into square tubes. It can be used in decoration, machine tool equipment, machinery industry, chemical industry, steel structure, shipbuilding, automobile, and other fields.

AP=Annealing (solid solution) + Pickling (pickling), the first letter AP of the two words represents two production processes. The pipe that has gone through the "solid solution, pickling" process is called AP pipe. Stainless steel AP pipe refers to a stainless steel pipe that has been pickled. Its corrosion resistance mainly comes from the reaction of the chromium element contained in it with oxygen to form a dense protective layer on its surface. The function of pickling is to make this reaction occur in advance to improve the corrosion resistance of stainless steel pipes. During the pickling process, the oil stains attached to the surface of the pipe and other substances contaminated during production will be removed.

During the production process of stainless steel pipes, the grease particles used for lubrication may be deformed due to production and processing. In order to avoid residual grease in the stainless steel tube as much as possible, the annealing process uses high temperature and argon gas is used as the atmosphere in the furnace.

The polishing wheel or polishing belt uses the abrasives in the polishing agent to grind and polish the surface of the stainless steel pipe, thereby achieving a smooth and smooth polishing effect on the surface of the stainless steel pipe. Its brightness depends on the type of processing technology. Additionally, mechanical polishing, while more aesthetically pleasing, can also reduce corrosion resistance.

Electropolishing is an anodic treatment method. According to the principle of electrochemistry, proper adjustment of voltage, current, acid composition and polishing time can not only make the surface bright, smooth and clean, but also enhance the durability of the surface. It is corrosive, so surface brightening is a good method, but of course its cost and technology will also increase a lot.

Pipe fittings are components that serve to connect, control, change direction, divert, seal, and support in piping systems. Our company can produce industrial stainless steel elbows and tees with diameters ranging from DN15 to DN400, made of ordinary austenitic and duplex steel.

Our company has the capability for steel plate leveling and processing, owning a stainless steel CNC uncoiling and leveling machine with edge trimming unit, CNC shearing machine, and CNC plasma cutting machine. These equipments feature high precision and stability, covering materials such as austenitic stainless steel, duplex stainless steel (austenite-ferrite type), etc. Specifically: Cross-cutting of coil plates is possible with widths up to 2000mm and thicknesses of 16mm for hot-rolled coils; processing of medium-thick plates can handle stainless steel plates up to 16mm in thickness and 2000mm in width.