09-14
/ 2023
Statistics from the Stainless Steel Branch of China Special Steel Enterprise Association show that in 2020, China's crude stainless steel production was 30.139 million tons, an increase of 739,400 tons, an increase of 2.51%, of which Cr-Ni steel (300 series) was 14.37,600 tons, an increase of 887,400 tons, an increase of 6.58%, accounting for 47.71%; Cr steel (400 series) 5,925,500 tons, an increase of 422,400 tons, an increase of 7.68%, accounting for 19.66%; Cr-Mn steel (200 series) 9,643,200 tons, down 589,900 tons, down 5.68%, accounting for 32.00%. In addition, in 2020, China's duplex stainless steel production reached a new high of 191,400 tons, an increase of 10,500 tons, an increase of 5.8%, accounting for 0.63%.
09-13
/ 2023
In the manufacturing process of the steel tube, the grease grains used for lubrication will also be deformed due to processing.
09-13
/ 2023
The corrosion resistance of stainless steel mainly comes from the formation of a dense protective layer on its surface after the chromium element in it reacts with oxygen. The role of pickling is to make it happen in advance of this reaction, in order to improve the corrosion resistance of stainless steel pipe, pickling process will remove the oil attached to the surface of the pipe and other substances contaminated in the production. The inner and outer surface of the pipeline is rough and easy to be attached by suspended impurities.
09-11
/ 2023
All the two ends of the opening and has a hollow section, and its length and section perimeter of relatively large steel, can be called steel pipe. When the length is compared with the circumference of the section, it can be called a pipe section or pipe fittings, which belong to the category of pipe products.
09-10
/ 2023
1. Excellent oxidation resistance at high temperature
2. Good carbonization resistance
3. Can be a very good resistance to oxidation sulfur atmosphere
4. It has good mechanical properties at room temperature and high temperature
5. Good stress corrosion cracking resistance due to the control of carbon content and grain size,
6. It has high creep fracture strength, so it is recommended to use 601 in the field above 500℃.
09-09
/ 2023
The 1Cr23Ni60Fe13Al alloy is a high temperature corrosion resistant alloy composed of elements such as chromium, nickel, iron and aluminum.
09-08
/ 2023
Stainless steel welded steel pipe - Stainless steel strip with uniform wall thickness is welded in one roll without added solder under gas protection.
09-08
/ 2023
Forming speed is fast, the yield is high, can be made into a variety of section forms, to meet the needs of the use conditions; Cold rolling can make the steel produces large plastic deformation, thus improve the yield point of steel. Hot rolling can destroy the ingot casting organization, grain refining of steel, and eliminating the defects of the microstructure, which makes steel group is close-grained, mechanical performance is improved.
09-07
/ 2023
Stainless steel pipe has the longest service life. From the analysis of the status quo of the application of stainless steel pipe at home and abroad, the application of stainless steel pipe 100 years of life, there will at least 70 years, and the service life of buildings.
09-06
/ 2023
Selection of high quality standard 304, 316L stainless steel raw material tube blank by punching, starting, annealing and other operations.