Outer Diameter 20mm Wall Thickness 4mm Inner Diameter 12mm Carbon Steel/Iron Pipe Precision Steel Pipe

Precision bright pipe is a kind of common seamless steel pipe (or de-diameter welded steel pipe) through fine drawing or cold rolling process of a high precision steel pipe material. Because the inner and outer walls of the precision bright tube have no oxide layer, no leakage under high pressure, high precision, high finish, no deformation in cold bending, flaring, flattening, no cracks and so on, it is mainly used to produce pneumatic or hydraulic components, such as cylinders or oil cylinders, can be seamless tube, but also welded tube.

The chemical composition of precision bright tube includes carbon C, silicon Si, Manganese Mn, sulfur S, phosphorus P and Chromium Cr. High quality carbon steel, fine rolling, non oxidation bright heat treatment (NBK state), non-destructive testing, the inner wall of the steel pipe is scrubbed with special equipment and washed by high pressure, the anti-rust oil on the steel pipe is treated with anti-rust, and the ends of the cover is treated with dustproof. The inner and outer walls of the steel pipe are of high precision and high smoothness. After heat treatment, the steel pipe has no oxidation layer and high inner wall cleanliness. The steel pipe can withstand high pressure, no deformation in cold bending, no crack in flaring and flattening. Steel tube color: white and bright, with high metallic luster.

Main uses:

The precision and finish of steel pipe are required by automobile and mechanical parts. Precision steel pipe users are not only the users with high requirements for accuracy and finish, because of the high precision of precision bright pipe, the tolerance can be kept at 2- 8 wire, so many mechanical processing users in order to save labor, material, time loss, the seamless steel pipe or round steel is slowly transformed into precision bright pipe.

The effects of elements in precision bright tubes on high temperature tempering brittleness can be divided into:

(1) Trigger the high temperature tempering brittle impurity elements such as phosphorus, tin, antimony and so on.

(2) Alloying elements that promote or slow down high temperature tempering brittleness in different forms and degrees. Chromium, manganese, nickel, silicon and so on to promote the effect, and molybdenum, tungsten, titanium and so on to delay the effect. Carbon also plays a catalytic role.

General carbon precision bright tube on high temperature temper brittleness is not. The sensitivity of binary or multicomponent alloy steel containing chromium, manganese, nickel and silicon varies with the type and content of alloying elements.

The sensitivity of the original structure of the tempered precision bright tube to the high temperature tempering brittleness of steel is significantly different. Martensite tempering structure is the most sensitive to high temperature tempering brittleness, bainite tempering structure is the second, pearlite structure is the least.

The nature of high temperature tempering brittleness of precision bright tubes is generally believed to be the result of grain boundary embrittlement caused by the segregation of phosphorus, tin, antimony, arsenic and other impurity elements at the original austenite grain boundary. The co-segregation of manganese, nickel, chromium and other alloying elements with the above impurity elements occurred at the grain boundary, which promoted the enrichment of impurity elements and intensified the embrittlement. Molybdenum, on the contrary, has strong interaction with phosphorus and other impurity elements, which can produce precipitated phase in the grain and hinder the segregation of phosphorus grain boundary, and can reduce the tempering brittle rare earth elements. Titanium can effectively promote the precipitation of impurity elements such as phosphorus in the grain, so as to weaken the grain boundary segregation of impurity elements and slow down the high temperature tempering brittleness.

Jiangsu Irunt Steel Group Co., Ltd. is located in Wuxi City , Jiangsu Province, China, which is the largest steel production base. After 30 years of efforts, it has grown from a family factory to a group company.

The group company mainly produces and sells a series of steel products such as steel pipe, steel coil, steel plate, copper pipe, copper plate, copper strip, aluminum pipe, aluminum plate, galvanized steel pipe, galvanized coil, galvanized plate and so on.The group company has established five platforms, including three production plants and two processing plants. At present, it is still expanding its production line, basically forming a development model of integration of production, processing and sales.

Our annual production capacity of various specifications is about 1 million metric tons. In addition to being a supplier of our series of products, the group company is also committed to expanding its commitment to customers by strengthening services and adding new facilities. A dedicated team is responsible for providing technical support, recommending the correct use of steel, and assisting customers to give full play to their products.

Over the years, we have opened up new markets in Africa, Southeast Asia, the Middle East and America. Our best service and excellent quality have led long-term partners in many countries and established continuous business relations with all customers. Our principle is "service first, sales second". Most of the time, we have comprehensive inspection and procurement to control the quality of finished products. We will have a professional inspection team to test each delivery of products.

Since its establishment, in line with the mission of "contributing high-quality products and services to the world" and the core values of "customer first, excellence, coexistence and win-win", we ensure that we can deeply cooperate with all our friends in the field of iron and steel, and win more affirmation and praise from the market and customers with its high-quality products, perfect product team and thoughtful service, I believe tomorrow will be better!