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Seamless Steel Tube Precision Tube Iron Tube Hollow Round Tube Size Diameter Thick Thin Wall Carbon Steel White Steel
Steel having a hollow section much longer than its diameter or
circumference. According to the sectional shape, it can be divided
into round, square, rectangular and special-shaped steel tubes;
According to the material is divided into carbon structural steel
pipe, low alloy structural steel pipe, alloy steel pipe and
composite steel pipe; According to the purpose, it can be divided
into conveying pipeline, engineering structure, thermal equipment,
petrochemical industry, machinery manufacturing, geological
drilling, high pressure equipment and so on. According to the
production process is divided into seamless steel pipe and welded
steel pipe, which is divided into hot rolled and cold rolled (pull)
two kinds of seamless steel pipe, welded steel pipe and straight
seam welded steel pipe and spiral seam welded steel pipe.
Steel pipe is not only used to transport fluids and powdery solids,
exchange heat, manufacture mechanical parts and containers, it is
also an economical steel. It can reduce the weight, save 20 ~ 40%
of the metal, and realize the industrial mechanized construction.
Using steel pipe to manufacture highway bridge can not only save
steel, simplify construction, but also greatly reduce the area of
protective coating and save investment and maintenance cost.
The material classification
Steel pipe can be divided into carbon pipe, alloy pipe, stainless
steel pipe and so on.
Carbon pipe can be divided into ordinary carbon steel pipe and high
quality carbon structure pipe.
Alloy tube can be divided into: low alloy tube, alloy structure
tube, high alloy tube, high strength tube. Bearing tube, heat and
acid resistant stainless tube, precision alloy (such as cutting
alloy) tube and high temperature alloy tube, etc.
Connection type classification
Steel pipe can be divided into light pipe (pipe end without thread)
and wire pipe (pipe end with thread) according to the connection
mode of pipe end.
Wire tube is divided into: ordinary wire tube and tube end
thickened wire tube.
Thickening wire pipe can also be divided into: outer thickening
(with external thread), inner thickening (with internal thread) and
inner and outer thickening (with internal and external thread) and
other ground wire pipe.
If the thread type can also be divided into: ordinary cylindrical
or conical thread and special thread and other ground thread tube.
In addition, according to the needs of users, wire pipes are
generally equipped with pipe joints delivery.
Classification of plating characteristics
According to the surface coating characteristics of steel tube can
be divided into: black tube (not coated) and coated tube.
Galvanized pipe, aluminum pipe, chromium pipe, aluminized pipe and
other alloy layer of steel pipe.
Coating pipe has outer coating pipe, inner coating pipe, inner and
outer coating pipe. Commonly used coatings are plastic, epoxy
resin, coal tar epoxy resin and a variety of glass anti-corrosion
coating materials.
Galvanized pipe is divided into: KBG pipe, JDG pipe, threaded pipe
and so on.