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factory directly sales hot rolled steel pipe

Features of hot-rolled steel pipes Hot-rolled seamless steel pipes are divided into general steel pipes, low- and medium-pressure boiler steel pipes, high-pressure boiler steel pipes, alloy steel pipes, stainless steel pipes, petroleum cracking pipes, geological steel pipes and other steel pipes. In addition to general steel pipes, low- and medium-pressure boiler steel pipes, high-pressure boiler steel pipes, alloy steel pipes, stainless steel pipes, petroleum cracking pipes and other steel pipes, cold-rolled (pulled) seamless steel pipes also include carbon thin-walled steel pipes, alloy thin-walled steel pipes, stainless thin-walled steel pipes and special-shaped steel pipes. The outer diameter of hot-rolled seamless pipes is generally greater than 32mm, and the wall thickness is 2.5-75mm. The outer diameter of cold-rolled seamless steel pipes can reach 6mm, and the wall thickness can reach 0.25mm. The outer diameter of thin-walled pipes can reach 5mm, and the wall thickness is less than 0.25mm. Cold rolling has higher dimensional accuracy than hot rolling. Generally used seamless steel pipes: are made of 10, 20, 30, 35, 45 high-quality carbon steel 16Mn, 5MnV and other low-alloy structural steel or 40Cr, 30CrMnSi, 45Mn2, 40MnB and other alloy steels by hot rolling or cold rolling. Seamless pipes made of low-carbon steels such as 10 and 20 are mainly used for fluid delivery pipelines. Seamless pipes made of medium-carbon steels such as 45# steel and 40Cr are used to manufacture mechanical parts, such as the load-bearing parts of automobiles and tractors. Generally used seamless steel pipes must ensure strength and flattening tests. Hot-rolled steel pipes are delivered in hot-rolled or heat-treated states, and cold-rolled steel pipes are delivered in heat-treated states. Functional uses of hot rolled steel pipe 1. Construction categories include: underground pipelines are the most transported, groundwater is extracted when building a building, boiler hot water is transported, etc. 2. Mechanical processing, bearing sleeves, processing machinery accessories, etc. 3. Electrical categories: gas transmission, water power generation fluid pipelines. 4. Anti-static pipes for wind power plants, etc.

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Features of hot-rolled steel pipes

Hot-rolled seamless steel pipes are divided into general steel pipes, low- and medium-pressure boiler steel pipes, high-pressure boiler steel pipes, alloy steel pipes, stainless steel pipes, petroleum cracking pipes, geological steel pipes and other steel pipes.

In addition to general steel pipes, low- and medium-pressure boiler steel pipes, high-pressure boiler steel pipes, alloy steel pipes, stainless steel pipes, petroleum cracking pipes and other steel pipes, cold-rolled (pulled) seamless steel pipes also include carbon thin-walled steel pipes, alloy thin-walled steel pipes, stainless thin-walled steel pipes and special-shaped steel pipes. The outer diameter of hot-rolled seamless pipes is generally greater than 32mm, and the wall thickness is 2.5-75mm. The outer diameter of cold-rolled seamless steel pipes can reach 6mm, and the wall thickness can reach 0.25mm. The outer diameter of thin-walled pipes can reach 5mm, and the wall thickness is less than 0.25mm. Cold rolling has higher dimensional accuracy than hot rolling.

Generally used seamless steel pipes: are made of 10, 20, 30, 35, 45 high-quality carbon steel 16Mn, 5MnV and other low-alloy structural steel or 40Cr, 30CrMnSi, 45Mn2, 40MnB and other alloy steels by hot rolling or cold rolling.

Seamless pipes made of low-carbon steels such as 10 and 20 are mainly used for fluid delivery pipelines.

Seamless pipes made of medium-carbon steels such as 45# steel and 40Cr are used to manufacture mechanical parts, such as the load-bearing parts of automobiles and tractors.

Generally used seamless steel pipes must ensure strength and flattening tests. Hot-rolled steel pipes are delivered in hot-rolled or heat-treated states, and cold-rolled steel pipes are delivered in heat-treated states.

Functional uses of hot rolled steel pipe

1. Construction categories include: underground pipelines are the most transported, groundwater is extracted when building a building, boiler hot water is transported, etc.

2. Mechanical processing, bearing sleeves, processing machinery accessories, etc.

3. Electrical categories: gas transmission, water power generation fluid pipelines.

4. Anti-static pipes for wind power plants, etc.

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