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.
08-29
/ 2023
Seamless steel pipe is made of steel ingot or solid tube blank by perforation, and then made by hot rolling, cold rolling or cold dial. The seamless steel pipe has the important status in our country steel pipe industry. According to incomplete statistics, our country existing seamless pipe production enterprises about more than 240, seamless steel pipe set about more than 250 sets, the annual capacity of about 4.5 million tons. From the diameter < 76, accounted for 35%, < phi 159-650, accounting for 25%. From the perspective of varieties, general purpose pipe 1.9 million tons, accounting for 54%; 760,000 tons of oil pipelines, accounting for 5.7%; 150,000 tons of hydraulic struts and precision pipes, accounting for 4.3%; Stainless pipes, bearing pipes and automobile pipes accounted for 50, 000 tons, accounting for 1.4%.
08-29
/ 2023
A, Local tortuosity: using a meter long ruler to measure the string height (mm) at the bending of the steel pipe, that is, the value of local tortuosity. The unit is mm/m and the display mode is 2.5mm/m. This method is also applicable to the curvature of the tube end.
08-28
/ 2023
For stainless steel welded pipe and stainless steel seamless pipe, although both are stainless steel pipe, but there is a big difference between them, there is a gap in the application field, and the use determines the material, process, surface and so on of both.
08-27
/ 2023
C:0.12-0.20, Si: ≤0.30, Mn: 0.30-0.70, S≤ 0.045P: ≤0.045, Cr: ≤0.30, Ni: ≤0.30, Cu: ≤0.30.