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
product description
| technology | Hot rolled, hot rolled/cold drawn seamless |
| grade | 20#, 45#, 16mn, A106(B,C), A53(A,B), Q235, Q345, ST42, ST45, ST52 |
| Section shape | round |
| wall thickness | 1 mm to 100 mm |
| surface | Bare/oil/paint/varnish can be customized |
| Package | bundles of steel strips |
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