2016年11月1日星期二

Classification of Welded Steel Pipe

1. The low pressure fluid conveying with galvanized welded steel pipe is also called 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 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 welded pipe with screws. Specifications of steel pipe in nominal diameter and nominal diameter is inside diameter of approximation.
2. Ordinary carbon steel wire casing 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.
3. Straight seam welded steel pipe weld is parallel to the pole longitudinal steel pipe. Usually divided into metric welded steel pipe, welded thin-wall tube, transformer cooling pipe and so on.
4. The pressurized fluid conveying with spiral seam submerged arc welding pipe is hot rolled steel coil tube billet, often spiral shape, with double-sided submerged arc welding method, welding, used for pressurized fluid conveying spiral seam welded pipe. Steel tube confined ability, good welding performance, through strict scientific inspection and testing, the use of safe and reliable. Carbon steel pipe diameter is big, high transmission efficiency, and can save laying pipelines. Mainly used for conveying oil, natural gas pipeline.
5. Confined fluid conveying with high frequency welding steel pipe spiral seam is hot rolled steel coil tube billet, often spiral shape, 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.
6. General low-pressure fluid conveying spiral seam submerged arc welding pipe is 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 LSAW steel pipe.
7. General low-pressure fluid conveying with high frequency welding steel pipe spiral seam is hot rolled steel coil tube billet, often temperature spiral forming, adopting high-frequency lap welding welding for general low-pressure fluid conveying spiral seam high frequency welded pipe.
8. Pile with spiral weld pipe is 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 structural steel pipe.

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