Tubo y tubería de acero inoxidable AISI 201

201 stainless steel tube：

Introduction:

201 stainless steel pipe is mainly characterized by acid resistance, alkali resistance, high density, no bubbles and no pinholes, and it is a high-quality material for the production of various watch cases and strap bottom covers. It is mainly used to make stainless steel decorative tubes, stainless steel industrial tubes, and some shallow stretch products.

use:

1. Building Decoration

201 stainless steel pipe is the most common application in the field of architectural decoration, such as gates, security windows, stair handrails, guardrails, etc. Like the wooden doors, wooden windows, and iron windows in the 1970s, they have been rarely seen. Instead, gates made of 201 stainless steel pipes, handrails, and anti-theft nets are already very common, and they are rich in style, high value, long life, etc. advantage.

2. Furniture and home

In the field of furniture and home, wood, cloth and other materials are common, and stainless steel pipes are rare. But do you think that the chairs, shoe racks and drying racks around you are all made of 201 stainless steel tubes, are you surprised?

3. Kitchen and bathroom

Towel racks, bathroom doors, etc. are made of 201 stainless steel tubes and glass

4. Auto parts

In terms of auto parts, handrails on buses, car frames, exhaust pipes, etc., you will find that 201 stainless steel pipes will also appear on them.

201 stainless steel pipe can be divided into welded pipe and seamless pipe, both have different application environments, the price is lower than other steel such as 304, and the amount of ordinary use environment is more than other steel types.

Development history:

Corrosion resistance of Fe-Cr and Fe-Cr-Ni alloys were discovered in the United Kingdom from 201904 to 1906 and AM Portev (AMPortevin) from 1909 to 1911 in France; W. Giesen from 1907 to 1909 in the United Kingdom performance. P.Monnartz (P.Monnartz) in Germany in 1908-1911 put forward many views of the theory of stainlessness and passivation. The inventors of industrial 201 stainless steel are: H. Brearly (H. Brearly) developed martensitic 201 stainless steel containing Cr12%-13% in the United Kingdom from 1912 to 1913; C. Dantsizen 1911-1914 The ferrite 201 stainless steel containing Cr14%-16% and C 0.07%-0.15% was developed in the United States; E. Maurer and B. Strauss were developed in Germany from 1912 to 1914 Austenitic 201 stainless steel containing C<1%, Cr 15%-40%, and Ni<20%. In 1929, Strauss (B. Strauss) obtained the low carbon 18-8 (Cr-18%, Ni-8%) 201 stainless steel patent rights. In order to solve the sensitized intergranular corrosion of 18-8 steel, E. Houdreuot of Germany in 1931 invented Ti-containing 18-8201 stainless steel (equivalent to 1Cr18Ni9Ti or AISI321)

The production of 201 stainless steel in the world has reached 11 million tons, while the production of 201 stainless steel in the world in 1950 is less than 1 million tons, and the output has increased more than 10 times in 40 years. Since 1970, Japan's 201 stainless steel production has surpassed that of the United States, leading the way and has continued to grow. In the production of 201 stainless steel, Cr13 type martensitic steel and Cr17 type ferritic steel account for about 30%-40%, and 18-8 type Cr-Ni austenitic steel accounts for about 60%-70%. The production of 201 stainless steel in advanced industrial countries in the world generally accounts for 2.5%-3.5% of the total domestic steel. In the production of 201 stainless steel, ultra-high power electric furnace, refining outside the furnace, continuous ingot casting (including thin slab continuous casting), hot continuous rolling or new furnace coil rolling mill, cold continuous rolling, continuous pickling heat treatment and continuous protective atmosphere bright heat treatment, And new techniques, new equipment and new technologies such as various quality inspection methods have been increasingly widely adopted. Large-scale, high-speed, continuous, and automation are the main development directions of 201 stainless steel production processes and equipment. 201 stainless steel materials that can be mass-produced and supplied abroad are: cold-rolled sheets up to 2m wide, including mirror panels, color plates, Pattern plate, coated plate, etc.; hot rolled medium plate with a width of more than 3m; hot rolled thick plate with a thickness of more than 300mm; seamless pipes with a diameter of more than 1m and a small of 0.1mm and welded pipes of various specifications ( The maximum diameter is up to 2m); 201 stainless steel foil with a thickness of about 0.05mm and a width of up to 1m. Among the 201 stainless steels produced in the United States, Japan, and other countries, cold-rolled sheets and strips account for about 60%. (Boards and strips account for approximately 70%); pipes account for approximately 4%-5% (among which welded pipes account for about 60% of 201 stainless steel pipe production in Japan); wires account for approximately 8%-9%; rods and profiles approximately It accounts for 10%-11%.