Products Descriptions
โย Product name:ย Hot Rolled Low-Medium Pressure Boiler Pipe
โย Standards: AISI, ASTM, BS, DIN, GB, JIS
โย Place of origin: Tianjin, China (Mainland)
โย Brand name: Runfei
โย Payment terms: L/C, T/T (30% deposit)
โย Certifications: ISO 9001, SGS, RoHS Directive-compliant
โย Packing details: Standard seaworthy packing, horizontal type and vertical type are all available
Our Advantages
โย Product name:ย Petroleum Coupling Tube
โย Standards: AISI, ASTM, BS, DIN, GB, JIS
โย Place of origin: Tianjin, China (Mainland)
โย Brand name: Runfei
โย Payment terms: L/C, T/T (30% deposit)
โย Certifications: ISO 9001, SGS, RoHS Directive-compliant
โย Packing details: Standard seaworthy packing, horizontal type and vertical type are all available
What is a high pressure boiler pipe?
The high pressure boiler pipe is a kind of boiler pipe and belongs to the seamless steel pipe, which is mainly used for manufacturing the superheater tube, the reheater tube, the gas-guide tube and the main steam pipe for high pressure and superhigh pressure boilers. Manufacturing processes of high pressure boiler pipes include fine drawing processes, brighting processes, hot rolling processes, cold drawing processes and hot expanding processes.
An overview of the high pressure boiler pipe
(1) Manufacturing methods
High pressure boiler pipes have the same manufacturing methods as seamless pipes, but they have strict grade requirements of steel which steel pipes are made of. High pressure boiler pipes are divided into general boiler pipes and high pressure boiler pipes two categories based on high or low operating temperature.
โ Operating temperatures of general boiler pipes are below 450โ. Chinese general boiler pipes are mainly made of NO.10 and NO. 20 carbon structural steel by hot roll processes or cold drawn processes.
โก High pressure boiler pipes are often under high temperature and high pressure conditions when they are in operation, which will oxidize and corrode under the actions of high temperature flue gases and water vapors. Therefore, high pressure boiler pipes are required to have high creep rupture strength, good anti-oxidation corrosion resistance and good structure stability.
2. Applications of boiler pipes
โ The general boiler pipes are mainly used as superheated steam pipes, large & small smoke pipes and arch tubes which are used for water-cooling wall pipes, boiling-water pipes, superheated steam pipes and locomotive boilers.
โก High pressure boiler pipes are mainly used as superheater tubes, reheater tubes, gas-guide tubes and main steam pipes for high pressure and superhigh pressure boilers.
3. Categories
Boiler pipes can be classified into general boiler pipes and high pressure boiler pipes according to high temperatures that they can bear. Both general boiler pipes and high pressure boiler pipes can be divided into various kinds of steel pipes based on their different applications.
4. Rust removal of high pressure boiler steel pipes
Basic methods of high pressure boiler steel pipes’ rust removal are cleaning methods, toolrust removal methods, pickling and abrasive blasting methods. With the development of China’s economy, long-distance oil and gas pipelines are important ways for energy security. In the anti-corrosion work process of oil or gas pipelines, rest removal of high pressure boiler steel pipes’ surfaces can also become factors that influence high pressure boiler steel pipes’ service lives. We can greatly improve technological levels and reduce production costs for the same equipment after ensuring quality of anticorrosive coatings.
What is a low and medium pressure boiler pipe?
Low and medium pressure boiler pipe uses steel ingot or solid tube to perforated capillary, and then dial made by the hot-rolled, cold rolled or cold.
According to incomplete statistics, China’s seamless pipe production enterprises is about 240 more than a seamless steel pipe unit is about more than 250 sets of production capacity of about 450 million tons. Seen from the caliber <ฯ76, accounting for 35% <ฯ159-650, accounting for 25%.
From a variety of general purpose of the 1.9 million tons, accounting for 54%; oil pipe 760,000 tons, accounting for 5.7%; hydraulic prop, precision tube 15 million tons, accounting for 4.3%; stainless steel pipe, tube bearings, automotive tube for a total of 50 000 tons, accounting for 1.4%.
Low and medium pressure boiler pipe is used to create a variety of structures with low pressure boiler superheated steam roller pipes and locomotive boiler superheated steam pipe, opium pipe, small pipe and arch brick works of high quality carbon structural steel hot-rolled and cold pull (rolled) seamless tube.
Mainly used in industrial boilers and boiler in conveying low pressure fluid in the pipeline. The representative of material 10, 20 steel.
Medium and High Pressure Boiler Pipe
Most common boiler pipe can be divided into two kinds, one is medium pressure boiler pipe, the other is high pressure boiler pipe. Please kindly note that most of high pressure boiler pipe are made from seamless steel pipe.
Boiler pipe has been widely used at heat exchanger pipe and tubing services, high pressure boiler, petrochemical industry pipes, tube exchanger bundle, economizer, super heater, etc.
Based on different working temperature, the medium or high pressure boiler pipe shall be used.
Normally classified as below cases:
The operation temperature of general boiler pipe is lower than 450โ. The medium pressure boiler pipe mainly adopts hot rolling process or cold drawing process.
High pressure boiler pipe are often used in high temperature and high pressure working conditions. Under the action of high temperature flue gas and steam, the pipe will occur oxidation and corrosion. It is required high pressure boiler pipe that has high endurable strength, high oxidation corrosion resistance and good tissue stability.
Difference between Medium and High Pressure Boiler Pipe
Boiler steel pipes includes medium pressure boiler pipe and high pressure boiler pipe, it is often manufactured in seamless procedures, welded steel pipe is not applicable. It has been widely used at heat exchanger pipe and tubing services, tube exchanger bundle, high pressure boiler, economizer, super heater, petrochemical industry pipes, etc.
Based on different working temperature, the medium or high pressure boiler pipe shall be used.
Normally classified as below cases:
1. The operation temperature of general boiler pipe is lower than 450โ. The medium pressure boiler pipeline mainly adopts hot rolling process or cold drawing process.
2. High pressure boiler pipes are often used in high temperature and high pressure conditions. Under the action of high temperature flue gas and steam, the pipe will occur oxidation and corrosion. It is required high pressure boiler pipe that has high durable strength, high oxidation corrosion resistance and good tissue stability.
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