Hot Rolled GB 8163 Standard Seamless Carbon Steel Pipe Thickness
3-80mm
Material
10#,20#,45#,Q345,A106-B,20Cr,15CrMo,St37,St42,ASTM 4140 etc.
Standard
JIS,GB,ASTM,DIN
Technique
Hot Rolled
OD
10~335mm,1/2"~12"
Wall Thickness
2~25mm,SCH10~XXS
Length
5.8m~12m/customized design
Surface Treatment
black painting, varnish, oil, galvanized, anti corrosion coatings
Product Description
Seamless steel pipes are generally made by hot rolling or cold
rolling of high quality carbon-bonded steel 16Mn, 5MnV or alloy
steel 40Cr, 30CrMnSi, 45Mn2 and 40MnB. Seamless pipes made of low
carbon steel such as 10 and 20 are mainly used for fluid
transmission pipelines. Seamless tubes made of medium carbon steel,
such as 45, 40Cr, are used to manufacture mechanical parts,such as
stress parts of automobiles and tractors.Hot-rolled seamless steel
pipes are divided into general steel pipes, low and medium pressure
boiler pipes, high pressure boiler pipes, alloy steel pipes,
stainless steel pipes, petroleum cracking pipes, geological steel
pipes and other steel pipes.
Seamless steel pipes are perforated from a whole round steel, and
steel pipes without welds on the surface are called seamless steel pipes. According to
the production method, seamless steel pipes can be divided into
hot-rolled seamless steel pipes, cold-rolled seamless steel pipes,
cold-drawn seamless steel pipes, extruded seamless steel pipes, and
top pipes. According to the cross-sectional shape, seamless steel
pipes are divided into two types: round and special-shaped.
Special-shaped pipes have square, oval, triangular, hexagonal,
melon seed, star, and finned pipes. The maximum diameter is 900mm
and the minimum diameter is 4mm. According to different uses, there
are thick-walled seamless steel pipes and thin-walled seamless
steel pipes. Seamless steel pipes are mainly used as petroleum
geological drilling pipes, petrochemical cracking pipes, boiler
pipes, bearing pipes, and high-precision structural steel pipes for
automobiles, tractors, and aviation.
