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Seamless carbon steel pipes are made from steel ingots or solid tube blanks that are perforated into capillary tubes, and then hot rolled, cold rolled or cold drawn. The raw material for seamless carbon steel pipes is round tube blanks. The round tube blanks are cut by a cutting machine into billets with a length of about 1 meter and sent to the furnace for heating via a conveyor belt. The billet is fed into the furnace and heated to a temperature of approximately 1,200 degrees Celsius. The fuel is hydrogen or acetylene.
Seamless steel pipe is light in weight, its weight is only 1/5 of square steel.Seamless steel pipe corrosion resistance: resistant to acid, alkali, salt and atmospheric environment corrosion, high temperature resistance, good impact resistance and fatigue resistance, does not require regular maintenance, and has an effective service life of more than 15 years.The tensile strength of seamless steel pipe is more than 8-10 times that of ordinary steel, the elastic modulus is better than steel, and it has excellent creep resistance, corrosion resistance and earthquake resistance.Seamless steel pipe has excellent mechanical properties and is easy to machine.Seamless steel pipes are highly elastic, can be used repeatedly in machinery and equipment, have no memory, do not deform, and are antistatic.| Element | Composition Range |
|---|---|
| Carbon | 0.17-0.24% |
| Manganese | 0.35-0.65% |
| Silicon | 0.17-0.37% |
| Phosphorus | 0.030% max |
| Sulfur | 0.035% max |
| Chromium | 0.15% max |
| Nickel | 0.25% max |
| Copper | 0.25% max |
| Property | Value |
|---|---|
| Tensile Strength | 510-620 MPa |
| Yield Strength | 320 MPa min |
| Elongation | 22% min |
| Hardness | HRB 80-90 |
| Specification | Value |
|---|---|
| Outside Diameter | As per standard |
| Wall Thickness | As per standard |
| Length | As per standard |
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