20# 45# Carbon Steel Seamless Tube For General construction and
mechanical construction
20# seamless steel tube is made of 20# steel, with slightly higher
strength than 15#. It is seldom quenched and has no temper
brittleness. Cold deformation plasticity is high, generally for bending,
calendering, bending and hammer arch processing, arc welding and
contact welding welding performance is good, gas welding thickness
is small, strict shape requirements or complex shape on the parts
prone to crack. Machinability cold drawing or normalizing state is better than
annealing state, generally used for manufacturing force is not
large and high toughness requirements of the workpiece.
20# seamless steel tube is made of high quality carbon structural
steel
Seamless steel pipe is a kind of round, square and rectangular
steel with hollow section and no joint around. Seamless steel tube is made of steel ingot or solid tube billet
through perforation into wool tube, and then hot rolled, cold
rolled or cold drawn. Seamless steel pipe with hollow section, a large number of used as
the pipeline for conveying fluid, steel pipe and round steel and
other solid steel compared with the bending and torsional strength
at the same time, lighter weight, is a kind of economic section
steel, widely used in the manufacture of structural parts and
mechanical parts, such as oil drilling steel scaffolding.
Purpose: Seamless steel tube is a kind of economic section steel,
has a very important position in the national economy, widely used
in petroleum, chemical, boiler, power station, ship, machinery
manufacturing, automobile, aviation, aerospace, energy, geology,
construction and military and other departments.
Classification:
① According to the section shape, it can be divided into round
section pipe and special-section pipe
② According to the material: carbon steel pipe, alloy steel pipe,
stainless steel pipe, composite pipe
③ According to the connection mode, it can be divided into threaded
connection pipe and welded pipe
④ According to the production mode: hot rolling (extrusion, top,
expansion) tube, cold rolling (drawing) tube
⑤ According to use: boiler pipe, oil well pipe, pipeline pipe,
structural pipe, fertilizer pipe......
-
| Product Name | Carbon Steel Seamless Pipe/Tube |
| Size | Customized or standard |
| C | 0.17%～0.2% |
| Si | 0.17%～0.37% |
| Mn | 0.35%～0.65% |
| S | ≤0.035% |
| P | ≤0.035% |
| Cr | ≤0.25% |
| Ni | ≤0.25% |
| Cu | ≤0.25% |
| Tensile Strength(σb(MPa)) | ≥410(42) |
| Yield Strength | ≥245(25) |
| Elongation | ≥25 |
| Hardness | ≤156HB, |
|
reduction
of
area(ψ(%) | ≥5 |
| Advantage | High Cost Performance and stock available |
| Lead Time | 7-15 days |
