Classification of welded steel pipe

Classification of welded steel pipe

1. The low pressure fluid conveying in welded steel pipe (GB/T3092-1993), also known as general welded pipe, commonly known as the clarinet. Is used to transport oil, gas, air, water and heating steam and other general low pressure fluid and other purposes of welded steel pipe. Steel tube wall thickness is divided into ordinary steel pipe and increasing pipe; To take over the side form is divided into without thread steel pipe (light pipe) and take rebar. Of the specifications of the steel tube with a nominal diameter (mm), nominal diameter is the inner diameter of approximation. Traditionally used in said, such as 1 1/2. Low pressure fluid conveying in welded steel pipe in addition to directly used for conveying fluid, also used as a low voltage large amounts of fluid conveying with galvanized welded steel pipe.

2. Low pressure fluid conveying with galvanized welded steel pipe (GB/T3091-1993), also known as galvanized welded steel pipe, commonly known as the white tube. Is used to transport oil, gas, air, water and heating steam, warm water generally low pressure fluid or other purposes such as hot dip galvanized welded butt weld or welding steel pipe. Steel tube wall thickness is divided into ordinary galvanized steel pipe and thickening of galvanized steel pipe; To take over the side form is divided into without thread galvanized steel pipe and galvanized steel pipe with screws. Of the specifications of the steel tube with a nominal diameter (mm), nominal diameter is the inner diameter of approximation. Traditionally used in said, such as 1 1/2.

3. The ordinary carbon steel wire casing (GB3640-88) is an industrial and civil construction and installation of machinery and equipment, such as electrical installation of the steel tube is used to protect the wire.

4. The straight seam welded steel pipe (YB242-63) is the weld and the steel tube parallel to the longitudinal steel pipe. Usually divided into metric welded steel pipe, welded thin-wall tube, transformer cooling pipe and so on.

5. Confined fluid conveying with spiral seam submerged arc welding steel pipe (SY5036-83) is a hot rolled steel coil tube billet, often spiral shape, with double-sided submerged arc welding method, welding, spiral seam steel pipe used for pressurized fluid conveying. Steel tube confined ability, good welding performance, through strict scientific inspection and testing, the use of safe and reliable. Steel pipe diameter is big, high transmission efficiency, and can save laying pipelines. Mainly used for conveying oil, natural gas pipeline.

6. Confined fluid conveying with high frequency welding steel pipe spiral seam (SY5038-83) is a hot rolled steel coil tube billet, often spiral forming temperature, using high-frequency welded lap welding method, used in pressurized fluid conveying spiral seam high frequency welding steel pipe. Steel tube confined ability, good plasticity, easy to welding and processing molding; After all kinds of strict and scientific inspection and testing, the use of safe and reliable steel pipe diameter is big, high transmission efficiency, and laying pipelines of investment can be saved. It is mainly used for laying of pipeline transport oil, gas, etc.

7. General low-pressure fluid conveying spiral seam submerged arc welding steel pipe (SY5037-83) is a hot rolled steel coil tube billet, often temperature spiral forming, the double automatic submerged arc welding or one side welding into legal system for water, gas, air and steam general low-pressure fluid conveying with submerged arc welding steel pipe.

8. General low-pressure fluid conveying spiral seam high frequency welded steel pipe (SY5039-83) is a hot rolled steel coil tube billet, often spiral forming temperature, using high-frequency lap welding welding for general low-pressure fluid conveying spiral seam high frequency welding steel pipe.

9. The pile with spiral welded steel pipe (SY5040-83) is a hot rolled steel coil tube billet, often spiral shape, made of double-sided submerged arc welding or high frequency welding, used in civil construction structure, port, bridge foundation pile with steel pipe.