How to Improve the Corrosion Resistance of Seamless Pipe.
High pressure boiler tubes such as Seamless Pipes are mainly used in boilers, and their production is mainly made of two or more types of metal materials. In the production of high-pressure boiler tubes, there are certain requirements for pipe wall thickness. Only after meeting this requirement can high-pressure boiler tubes be better applied to the use of high-pressure boilers!
Seamless Pipes can be cut and processed to obtain the required length of high pressure boiler tube products; The production of high-pressure boiler tubes mainly adopts seamless production to avoid leakage during use! The use of special-shaped steel tubes is also a material used in the production of high-pressure boiler tubes. It is also a generic term for seamless steel tubes with other cross-sectional shapes except for circular tubes. Long term use is also harmless for high-pressure boilers.
12Cr1MovG High Pressure Boiler Tube Performance and Usage
12Cr1MovG high-pressure boiler pipe belongs to alloy steel pipe. The carbon content of 12Cr1MovG high-pressure boiler pipe is 0.12%. In addition, trace elements such as chromium, molybdenum, and vanadium are intentionally added to the steel to mediate the various properties of 12Cr1MovG high-pressure boiler pipe.
Chemical composition C: 0.08 ～ 0.15 Si: 0.17 ～ 0.37 Mn: 0.40 ～ 0.70 Cr: 0.90 ～ 1.2 Mo: 0.25 ～ 0.35 V: 0.15 ～ 0.30
Mechanical property: [Sample blank size] 30mm
[Heat treatment] Quenching heating temperature (℃): 970; Coolant: air tempering heating temperature (℃): 750; Coolant: empty
[Mechanical properties] Tensile strength（ σ B/MPa): ≥ 490 yield point（ σ S/MPa): ≥ 245 elongation after fracture（ δ 5/%): ≥ 22% reduction of area（ ψ/%）：≥ Impact absorption energy (Aku2/J): ≥ 71 Brinell hardness (HBS100/3000) (annealed or high-temperature tempered state): ≤ 179
12Cr1MovG high-pressure boiler tubes are mainly used after normalizing and high-temperature tempering to manufacture superheated steel pipes, conduits, coils, and other corresponding forgings in high-pressure equipment with a working temperature not exceeding 570-585 ℃.
In order to improve the corrosion resistance of seamless steel pipes, ordinary seamless pipes are galvanized. Galvanized steel pipes are divided into two types: hot galvanizing and electrogalvanizing. The hot galvanizing zinc coating is thick, the cost of electrogalvanizing is low, and the surface is not very smooth. Oxygen blowing welded pipe: It is used as a pipe for oxygen blowing in steel making, generally using small diameter welded steel pipes, with specifications ranging from 3/8-inch to 2-inch. It is made of 08, 10, 15, 20, or 195-Q235 steel strips. In order to prevent corrosion, it is necessary to undergo aluminizing treatment.
