4000mm 16mm Round Metal Tube Pipe ST52 Hot Rolled Seamless Steel Hollow Rod

Seamless round carbon steel pipe / round metal pipe / metal seamless pipe hollow rod

What is the difference between carbon steel pipe and seamless steel pipe

China carbon steel pipe factory to share with you: With the development of society, the output of steel is getting bigger and bigger, and the demand is getting bigger and bigger. Therefore, the development of modern cities is inseparable from carbon steel pipes. Carbon steel pipes are widely used, such as electrified high-speed rail, substations, and communication facilities are used in many aspects. There are so many steels, but what type of carbon steel pipes are they classified into? What is the difference between carbon steel pipe and seamless steel pipe? How to divide carbon steel pipe

In fact, carbon steel pipe is mainly determined by its carbon content. The following is classified according to the number of carbon positions in carbon steel pipes

Low carbon steel pipe - the carbon content is less than 0.25%. Carbon steel pipes with a design pressure of less than 10MPa in petroleum products, oil and gas and ordinary media - carbon content is about 0.25 to 0.60%, such as 35, 45 steel, etc.; high carbon steel pipe - carbon content is greater than 0.60%. This type of steel is generally not used to make steel pipes. Carbon steel pipes contain a certain amount of carbon, as well as silicon and manganese. Does not contain other alloying elements. Note that the silicon content is generally less than 0.40%. In order to ensure the chemical composition and mechanical properties of carbon steel pipes, the content of impurities such as sulfur and phosphorus must be controlled below 0.035% in order to produce high-quality carbon steel pipes

Carbon steel pipe and seamless steel pipe

first. different properties

Carbon steel pipe: It is made of steel or solid round steel perforated into capillary tubes, which are then hot-rolled, cold-rolled or cold-drawn.

Seamless steel pipe: made of all-metal, seamless steel pipe on the surface

2. Different characteristics

Carbon steel pipes: Carbon steel pipes are divided into hot-rolled and cold-rolled (drawn) steel pipes. Hot-rolled carbon steel pipes are divided into ordinary 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.

Seamless steel pipe: According to the production method, seamless pipe can be divided into hot-rolled pipe, cold-rolled pipe, cold-drawn pipe, extruded pipe, pipe jacking, etc. According to the cross-sectional shape, seamless steel pipes are divided into two types: round and irregular. Irregular tubes include square, oval, triangle, hexagon, melon seed, star, and finned tubes of various complex shapes. Maximum diameter 650mm, minimum diameter 0.3mm

Seamless steel pipes are made of hot rolled perforated steel pipes without welds. It is sometimes necessary to further cold work the hot worked tube to obtain the corresponding shape and size. Carbon steel pipes are generally made into round, square, multi-rolled flat and other shapes. Seamless steel pipes are the most widely used pipes in petrochemical plants today. Carbon steel pipes are more widely used

At the same time, the main requirement of carbon steel pipe for its chemical composition is the content of carbon, seamless steel pipe is a large category, generally refers to seamless steel pipe, with a wide range

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