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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 billets. The round tube billets 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.
It has high hardness, high strength and good thermal conductivity.It has high ductility and good plasticity, and is easy to process and shape.Excellent corrosion resistance and good weldability.| Element | Grade A | Grade B | Grade C |
|---|---|---|---|
| Carbon max. % | 0.25 | 0.30 | 0.35 |
| Manganese % | 0.27 – 0.93 | 0.29 – 1.06 | 0.29 – 1.06 |
| Phosphorus max % | 0.035 | 0.035 | 0.035 |
| Sulfur max % | 0.035 | 0.035 | 0.035 |
| Silicon, min % | 0.10 | 0.10 | 0.10 |
| Grade A | Grade B | Grade C | |
|---|---|---|---|
| Tensile Strength, min, psi | 48,000 | 60,000 | 70,000 |
| Yield Strength, min, psi | 30,000 | 35,000 | 40,000 |
| Dimensions | ASME, ASTM, and API |
|---|---|
| Type | Welded / ERW / Seamless / Fabricated |
| Form | Hydraulic, Round, Etc |
| Size | 1/2 NB to 36 NB |
| Length | Minimum 3 to Maximum 18 Meters |
| Thickness | 3-12mm |
| End | Beveled End, Plain End, Treaded |
| Schedules | Schedule 40, 80, 160, XS, XXS |
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