1.
Welded steel pipe for low pressure fluid transportation (GB/T3092-1993) is also called general welded pipe, commonly known as clarinet. It is a welded steel pipe used for conveying water, gas, air, oil and heating steam and other generally lower pressure fluids and other purposes.
The wall thickness of the steel pipe is divided into ordinary steel pipe and thick steel pipe; the connection end form is divided into non-threaded steel pipe (smooth pipe) and threaded steel pipe. The specification of the steel pipe is expressed by the nominal diameter (mm), which is the approximate value of the inner diameter. It is customary to express in inches, such as 11/2. Welded steel pipes for low-pressure fluid transportation are not only directly used to transport fluids, but also as raw pipes for galvanized welded steel pipes for low-pressure fluid transportation.
2.
Galvanized welded steel pipe for low pressure fluid transportation (GB/T3091-1993) is also called galvanized welded steel pipe, commonly known as white pipe. It is a hot-dip galvanized welded (furnace welded or electric welded) steel pipe used for conveying water, gas, air, oil, heating steam, warm water and other generally lower pressure fluids or other purposes.
The thickness of the steel pipe connection wall is divided into ordinary galvanized steel pipe and thick galvanized steel pipe; the connection end form 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 the approximate value of the inner diameter. It is customary to express in inches, such as 11/2.
3. Ordinary carbon steel wire casing (GB3640-88) is a steel pipe used to protect wires in electrical installation projects such as industrial and civil construction and installation of machinery and equipment.
4. (
ERW pipe) Straight seam electric welded steel pipe (YB242-63) is a steel pipe whose weld seam is parallel to the longitudinal direction of the steel pipe. Usually divided into metric electric welded steel pipe, electric welded thin-walled pipe, transformer cooling oil pipe and so on.
5. Spiral seam submerged arc welded steel pipe (SY5036-83) for pressure-bearing fluid transportation is made of hot-rolled steel strip coils, which are spirally formed at regular temperatures and welded by double-sided submerged arc welding. They are used for pressure-bearing fluid transportation. Spiral seam steel pipe. The steel pipe has strong pressure-bearing capacity and good welding performance. After various strict scientific inspections and tests, it is safe and reliable to use. The steel pipe has a large diameter, high transmission efficiency, and can save investment in laying pipelines. Mainly used in pipelines for transporting oil and natural gas.
6. Spiral seam high-frequency welded steel pipes for pressure-bearing fluid transportation (SY5038-83) are hot-rolled steel strip coils as tube blanks, which are spirally formed at regular temperatures and welded by high-frequency lap welding. They are used for pressure-bearing fluid transportation. Spiral seam high-frequency welded steel pipe. The steel pipe has strong pressure-bearing capacity and good plasticity, which is convenient for welding and processing. After various strict and scientific inspections and tests, it is safe and reliable to use. The steel pipe has a large diameter and high transmission efficiency. It can save investment in laying pipelines. Mainly used to lay pipelines for transporting oil and natural gas.
7. Spiral seam submerged arc welded steel pipe (SY5037-83) for general low-pressure fluid transportation is made of hot-rolled steel strip coils as tube blanks, which are often spirally formed by double-sided automatic submerged arc welding or single-sided welding. Submerged arc welded steel pipes for general low pressure fluid transportation such as water, gas, air and steam.
8. Spiral seam high frequency welded steel pipe for general low pressure fluid transportation (SY5039-83) is a hot-rolled steel strip as a tube blank, which is often spirally formed at temperature, and is welded by high-frequency lap welding. It is used for general low-pressure fluid transportation. Seam high-frequency welded steel pipe.
9. Spiral welded seam steel pipe (
SSAW pipe) for pile (SY5040-83) is made of hot-rolled steel strip coils as tube blanks, which are spirally formed at regular temperature, and are made by double-sided submerged arc welding or high-frequency welding. They are used in civil construction structures and docks. Steel pipes for foundation piles such as bridges, etc.
In addition, general welded pipes need to be thermally insulated or anti-corrosion treatment according to different projects when they are used. Commonly used are polyurethane insulation steel pipes, and 3PE,
IPN8710 and other anti-corrosion steel pipes.
