Introduction of high frequency welded pipe and what is the difference with steel pipe
1. Welded steel pipe for low-pressure fluid transportation (GB/T3092-1993) is also called general welded pipe, commonly known as black pipe.
It is a welded steel pipe used for conveying water, gas, air, oil, heating steam and other generally lower pressure fluids and other uses. The wall thickness of the steel pipe is divided into ordinary steel pipe and thickened steel pipe; the form of the pipe end is divided into non-threaded steel pipe (light pipe) and threaded steel pipe.
The specification of the steel pipe is expressed by the nominal diameter (mm), which is an approximate value of the inner diameter. It is commonly used to express inches, such as 11/2. In addition to being directly used to transport fluids, welded steel pipes for low-pressure fluid delivery are also used as raw pipes for galvanized welded steel pipes for low-pressure fluid delivery.
2. Galvanized welded steel pipe (GB/T3091-1993) for low-pressure fluid transportation is also called galvanized welded steel pipe, commonly known as white pipe. It is a hot-dip galvanized welding (furnace welding or electric welding) steel pipe used for conveying water, gas, air oil, heating steam, warm water and other generally low-pressure fluids or other purposes. The wall thickness of the steel pipe is divided into ordinary galvanized steel pipe and thickened galvanized steel pipe; the form of the pipe end is divided into non-threaded galvanized steel pipe and threaded galvanized steel pipe. The specification of the steel pipe is expressed by the nominal diameter (mm), which is an approximate value of the inner diameter. It is commonly used to express inches, such as 11/2.
3. Ordinary carbon steel wire bushing (GB3640-88) is a steel pipe used to protect wires in electrical installation projects such as industrial and civil construction, installation of machinery and equipment.
4. Straight seam welded steel pipe (YB242-63) is a steel pipe with a welding seam parallel to the longitudinal direction of the steel pipe. Usually divided into metric welded steel pipes, welded thin-walled pipes, transformer cooling oil pipes, etc.
The steel pipe is generally divided into two categories, one is called welded steel pipe, and the other is seamless steel pipe.
Welded steel pipe, also known as welded pipe, is a steel pipe made by welding a steel plate or strip after crimping. Welded steel pipe production process is simple, high production efficiency, many varieties and specifications, less equipment, but the general strength is lower than seamless steel pipe.
Steel with a hollow cross-section whose length is much greater than the diameter or circumference. According to the cross-sectional shape, it is divided into round, square, rectangular and special-shaped steel pipes; according to the material, it is divided into carbon structural steel pipes, low-alloy structural steel pipes, alloy steel pipes and composite steel pipes; according to the use, it is divided into transportation pipes, engineering structures, For thermal equipment, petrochemical industry, machinery manufacturing, geological drilling, high-pressure equipment steel pipes, etc.; according to the production process is divided into seamless steel pipes and welded steel pipes, which are divided into hot-rolled and cold-rolled (pulled) Two kinds, welded steel pipes are divided into straight seam welded steel pipes and spiral seam welded steel pipes.
Not only is steel pipe used for transporting fluids and powdered solids, exchanging heat energy, manufacturing mechanical parts and containers, it is also an economical steel.
The use of steel pipes to manufacture grids, pillars, and mechanical supports for building structures can reduce weight and save 20 to 40% of metal, and can realize mechanized factory construction. The use of steel pipes to manufacture roads and bridges not only saves steel and simplifies construction, but also greatly reduces the area of the protective coating, saving investment and maintenance costs.