Hot Rolled Seamless Carbon Steel Pipe tube is a weld-free steel pipe produced from solid round billets through high-temperature piercing and rolling. It is suitable for fluid conveyance, high-temperature service and structural applications.
Product Description
Hot Rolled Seamless Carbon Steel Pipe tube uses high-quality carbon steel round billets as raw material. After heating to high temperature, it is produced through piercing, rolling and sizing processes. During hot rolling, the metal undergoes recrystallization, resulting in relatively coarse grains, good plasticity and toughness, and easy processing and welding.
Product Parameters
|
Item |
Parameter |
|
Manufacturing process |
Hot rolled |
|
Outer diameter range |
Generally above 32mm |
|
Wall thickness range |
2.5–75mm |
|
Common materials |
10#, 20#, Q345B, etc. |
|
Common standards |
ASTM A106, ASTM A53, API 5L, GB/T 8163 |
|
Service conditions |
General fluid conveyance, high-temperature service, structural use |
Main Applications
Petrochemical: refinery process piping, pressure piping systems
Power generation: boiler tubes, superheater tubes, steam piping
Oil and gas transmission: line pipe, gathering lines
General fluid conveyance: water, steam, air, gas piping
Mechanical and structural: structural support pipe, machined pipe
FAQ
Q: What is the difference between Hot Rolled Seamless Carbon Steel Pipe tube and cold rolled seamless pipe?
A: Hot-rolled pipe is rolled above the recrystallization temperature, with coarser grains, better plasticity and toughness, generally larger outer diameter and lower cost, suitable for general fluid conveyance and structural applications. Cold-rolled pipe is produced by multiple drawing passes at room temperature, with fine grains, high dimensional precision and good surface quality, suitable for high-pressure and precision applications, but at higher cost.
Q: What standards is this product suitable for?
A: Common standards include ASTM A106 (high-temperature service), ASTM A53 (general service), API 5L (line pipe), GB/T 8163 (fluid conveyance pipe), etc. Different standards correspond to different chemical composition, mechanical properties and testing requirements. Selection should be determined according to service conditions.
Q: Can Hot Rolled Seamless Carbon Steel Pipe tube be used in corrosive media?
A: Carbon steel has good corrosion resistance in general neutral media. In oil and gas environments containing carbon dioxide, hydrogen sulfide or other corrosive components, carbon steel is prone to corrosion. In such service, stainless steel pipe or internal coating and other corrosion protection measures are recommended.
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