1.Welded steel pipes for low-pressure fluid transportation are also known as general welded pipes, commonly known as black pipes. It is a welded steel pipe used for transporting generally lower pressure fluids such as water, gas, air, oil, and heating steam, and for other purposes. The wall thickness of steel pipes is divided into ordinary steel pipes and thickened steel pipes, and the receiving end method is divided into non threaded steel pipes (plain pipes) and threaded steel pipes. The standard nominal diameter (mm) of steel pipes indicates that the nominal diameter is an approximate value of the inner diameter. In addition to being directly used for transporting fluids, welded steel pipes for low-pressure fluid transportation are also used as raw pipes for galvanized welded steel pipes for low-pressure fluid transportation.
2. Galvanized welded steel pipes for low-pressure fluid transportation are also known as galvanized welded steel pipes, commonly known as white pipes. It is a hot-dip galvanized welded (furnace welded or electric welded) steel pipe used for transporting water, gas, air oil, heating steam, warm water, and other generally low pressure fluids or other purposes. The wall thickness of steel pipes is divided into general galvanized steel pipes and thickened galvanized steel pipes; The receiving end method is divided into unthreaded galvanized steel pipes and threaded galvanized steel pipes. The standard nominal diameter (mm) of steel pipes indicates that the nominal diameter is an approximate value of the inner diameter.
3.General carbon steel wire sleeves are steel pipes used to protect wires in industrial and civil buildings, equipment, machinery, and other electrical equipment projects.
4. Longitudinal electric welded steel pipes are steel pipes with longitudinal parallel welds to the steel pipes. Generally, it is divided into metric welded steel pipes, welded thin-walled pipes, transformer cooling oil pipes, and so on.
5.The spiral seam submerged arc welded steel pipe for transporting pressurized fluid is a spiral seam steel pipe that uses hot rolled steel strip coils as pipe blanks, is often spirally formed, and is welded using the double-sided submerged arc welding method for transporting pressurized fluid. The steel pipe has strong pressure bearing capacity and good welding performance. It has passed various strict scientific inspections and tests, and is safe and reliable in use. The steel pipe has a large diameter, high transportation efficiency, and can save investment in laying pipelines. The pipeline is mainly used for transporting oil and natural gas.
6. The spiral seam high-frequency welding pipe machine for transporting pressurized fluid is a spiral seam high-frequency welded steel pipe used for transporting pressurized fluid, which uses hot rolled steel strip coils as tube billets, often spirally formed at high temperature, and welded using the high-frequency overlap welding method. Steel pipe has strong pressure bearing capacity and good plasticity, which is convenient for welding and processing; Through various strict and scientific inspections and tests, it is safe and reliable to use, with a large diameter of steel pipes, high transportation efficiency, and can save investment in laying pipelines. Mainly used for laying pipelines for transporting oil, natural gas, etc.
7. Spiral submerged arc welded steel pipes for general low pressure fluid transportation are made of hot-rolled steel strip coils as tube blanks, often spirally formed, and selected from the double sided automatic submerged arc welding or single sided welding method for general low pressure fluid transportation such as water, gas, air, and steam.
8. The spiral seam high-frequency welded steel pipe for general low pressure fluid transportation is made of hot-rolled steel strip coil as the pipe blank, and is often spirally formed at high temperature. The high-frequency lap welding method is selected for welding the spiral seam high-frequency welded steel pipe for general low pressure fluid transportation.
9. Spiral welded steel pipes for piles are made of hot-rolled steel strip coils as pipe blanks, often spirally formed at elevated temperatures, and selected for double-sided submerged arc welding or high-frequency welding. They are used for steel pipes for foundation piles such as civil construction structures, docks, and bridges.
