Category Archives: Knowledge

From this page, you can learn what is the product of our production and sales of duplex stainless steel pipes, industrial welded pipes, stainless steel flanges, etc.

Does Stainless Steel Rust ?

Does Stainless Steel Rust ?​ When talking of stainless steel, it always refers to austenitic stainless steel (300 Series Stainless Steel), which includes 304, 316L, 321 and so on. As a professional stainless steel pipe supplier, it has always been asked whether the stainless steel can rust ? Here is the answer: Stainless Steel Can…
Read more

Application of Thin-Wall Stainless Steel Tubings

Application of Thin-Wall Stainless Steel Tubings in Indoor Gas Engineering Project With the development of China’s economy, increasing number of new materials and technologies are widely used in gas pipeline engineering projects. Thin wall stainless steel tubings, a new construction material, now also has been widely applied for the construction of natural gas pipelines. For…
Read more

Development of Stainless Steel Production Technology

Development of Stainless Steel China Production Technology   At the beginning of 1950s, foreign stainless steel pipe production technology has undergone a milestone change: the hot extrusion process originally applied non-ferrous metal material production has gone through a breakthrough on the lubricant, billet heating and service life of the mold. [caption id="attachment_6732" align="alignright" width="300"] heat treated…
Read more

Super Duplex Stainless Steel 2507

Description of Super Duplex Stainless Steel 2507 Super Duplex Stainless Steel 2507 contains 25% chromium, 4% molybdenum and 7% nickel. It is of strong intensity and corrosion resistance, and is mainly used in chemical processing, petrochemical and subsea equipment. Besides, this stainless steel is also resistant to chloride corrosion, high thermal conductivity and low coefficient…
Read more

Fatigue Properties And Benefits Of Thin-walled Duplex Pipes

With the development of science and technology, new requirements are put forward for hot water supply. People are paying more and more attention to water quality issues, and the requirements for water quality are constantly increasing. Plastic pipes, composite pipes and copper pipes have become commonly used pipe materials in piping systems. But in many…
Read more

Principle and Method of Pickling and Passivating Stainless Steel

Pickling and Passivating. before and after pickling passivating The performance of stainless steel is achieved by special alloy composition, in which chromium plays a leading role. The chromium combines with the oxygen, and forms an extremely thin and hard chrome-oxide film to protect the bottom part of the stainless steel. With the protection of chromium-oxide…
Read more

What Happens After Processing Duplex Stainless Steel

The cleaning up of after processing duplex stainless steel is no different from the requirements of other stainless steels. The cleaning process after processing duplex stainless steel pipe is very important, and its importance is the same as controlling the temperature between layers or using shielding gas during welding. Stainless steel that has not been…
Read more

Influencing Factors Of Weld Cracking Of High-Frequency Welded Pipes

In high-frequency welded pipes, the manifestations of cracks include long cracks, partial periodic cracks, and irregular intermittent cracks. Some stainless steel welded pipes have no cracks on the surface after welding, but after flattening, straightening or water pressure tests, cracks appear. Factors affecting cracks Poor quality of raw materials In the production of welded pipes,…
Read more

Stainless Steel Welded Pipe Introduction

Stainless steel welded pipe introduction: executive standard, material grade, specification range KAYSUNS, the stainless steel pipe fittings supplier, produces and provides all kinds of welded pipe products such as austenitic stainless steel, super austenitic stainless steel, duplex stainless steel, super duplex stainless steel, and corrosion-resistant alloys. Our products can be widely used in various corrosive…
Read more