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Huaian Carbon Steel Seamless Pipe
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Name: Huaian Carbon Steel Seamless Pipe
Standard: ASME B36.10M
Type: Seamless
Material: Carbon Steel
Size: 1/8 to 48 inch
Schedule: SCH40
Surface of Pipe: Black
Application: Used in Industrial Fields such as Petroleum, Natural Gas, Chemical Engineering, Power, and Construction.
Standard: ASME B36.10M
Type: Seamless
Material: Carbon Steel
Size: 1/8 to 48 inch
Schedule: SCH40
Surface of Pipe: Black
Application: Used in Industrial Fields such as Petroleum, Natural Gas, Chemical Engineering, Power, and Construction.
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Carbon Steel Seamless Pipe complies with ASME B36.10M standards (customizable to other standard dimensions per client requirements). Manufactured from premium carbon steel, its seamless construction ensures exceptional high strength and pressure resistance. Available in diameters ranging from 1/8"to 48"with SCH40 wall thickness and black painted surface, it is widely used in petroleum, natural gas, chemical, power, and construction industries. With superior corrosion resistance, high-pressure tolerance, and excellent weldability, Carbon Steel Seamless Pipe is the ideal choice for industrial fluid transport and structural support systems.
High-Pressure Performance of ASME B36.10M Carbon Steel Seamless Pipe
1. Seamless Structure Advantages for High Pressure
The high-pressure endurance of Carbon Steel Seamless Pipe stems from its integral seamless manufacturing process. Unlike welded pipes, Carbon Steel Seamless Pipe is formed through hot rolling or cold drawing, eliminating weld-related defects such as heat-affected zones (HAZ), residual stresses, and microcracks. This results in more uniform mechanical properties and superior reliability under high-pressure conditions.
1. Seamless Structure Advantages for High Pressure
The high-pressure endurance of Carbon Steel Seamless Pipe stems from its integral seamless manufacturing process. Unlike welded pipes, Carbon Steel Seamless Pipe is formed through hot rolling or cold drawing, eliminating weld-related defects such as heat-affected zones (HAZ), residual stresses, and microcracks. This results in more uniform mechanical properties and superior reliability under high-pressure conditions.
Key Performance Comparison (Carbon Steel Seamless Pipe vs. Welded Pipe)
| Parameter | Carbon Steel Seamless Pipe | Welded Pipe |
| Compressive Strength | ≥415 MPa (A106 Gr.B standard) | May decrease by 10%-15% due to weld inconsistency |
| Burst Pressure | Up to 3× working pressure (SCH160 grade) | Typically 2.5× working pressure (weld-dependent) |
| Stress Distribution | Uniform, no localized stress concentratio | Weld zones prone to stress peaks |
2. High-Pressure Media Compatibility
Carbon Steel Seamless Pipe excels in transporting various high-pressure media, including:
Carbon Steel Seamless Pipe excels in transporting various high-pressure media, including:
（1）High-Temperature Steam Systems (P≥2.5MPa, T≥300℃)
- Material Properties: ASTM A106 Gr.B Carbon Steel Seamless Pipe maintains stable mechanical performance at 425℃, with only ~15% reduction in yield strength versus room temperature.
- Material Properties: ASTM A106 Gr.B Carbon Steel Seamless Pipe maintains stable mechanical performance at 425℃, with only ~15% reduction in yield strength versus room temperature.
- Case Study: A power plant’s main steam pipeline (SCH80, DN200) using A106 Carbon Steel Seapeless Pipe (design pressure: 10MPa) operated leak-free for 10 years.
（2）Oil & Gas High-Pressure Transmission (P≥15MPa)
- API 5L Compliance: Carbon Steel Seamless Pipe meets PSL2 requirements, ideal for sour service (H₂S-containing environments).
- API 5L Compliance: Carbon Steel Seamless Pipe meets PSL2 requirements, ideal for sour service (H₂S-containing environments).
- Burst Test Data:
- SCH40 Carbon Steel Seamless Pipe (A106 Gr.B): Withstood 45MPa hydrostatic pressure (standard: 30MPa).
- Equivalent welded pipe: Typically fails at weld seams under 38MPa.
- SCH40 Carbon Steel Seamless Pipe (A106 Gr.B): Withstood 45MPa hydrostatic pressure (standard: 30MPa).
- Equivalent welded pipe: Typically fails at weld seams under 38MPa.
（3）High-Pressure Chemical Process Piping
- Pressure Stability: Under cyclic pressure (e.g., reciprocating pump lines), Carbon Steel Seamless Pipe exhibits 30% longer fatigue life than welded pipes (per ASTM E466 tests).
3. Critical Mechanical Properties
For SCH40 Carbon Steel Seamless Pipe (A106 Gr.B) at 20MPa working pressure:
- Hoop stress: Only 180MPa (well below material yield strength of 240MPa).
For SCH40 Carbon Steel Seamless Pipe (A106 Gr.B) at 20MPa working pressure:
- Hoop stress: Only 180MPa (well below material yield strength of 240MPa).
- Low-Temperature Toughness: Charpy V-notch impact energy ≥27J (-20℃), ensuring resistance to brittle fracture in cryogenic high-pressure environments.
4. Industry Validation
- Oilfield Wellhead Equipment: API 6A mandates Carbon Steel Seamless Pipe (A106/A333) for 15K~20K PSI (103~138MPa) applications.
- Supercritical Boiler Piping: SCH160 Carbon Steel Seamless Pipe (with Gr.12 alloy steel) withstands extreme 32MPa/610℃ conditions.
- Oilfield Wellhead Equipment: API 6A mandates Carbon Steel Seamless Pipe (A106/A333) for 15K~20K PSI (103~138MPa) applications.
- Supercritical Boiler Piping: SCH160 Carbon Steel Seamless Pipe (with Gr.12 alloy steel) withstands extreme 32MPa/610℃ conditions.
5. Technical Summary
The high-pressure performance of Carbon Steel Seamless Pipe combines material excellence, manufacturing precision, and structural design:
1. Seamless process eliminates weld defects, maximizing pressure-bearing capacity.
The high-pressure performance of Carbon Steel Seamless Pipe combines material excellence, manufacturing precision, and structural design:
1. Seamless process eliminates weld defects, maximizing pressure-bearing capacity.
2. Optimized carbon steel composition (strict S/P control) enhances crack resistance under high pressure.
3. Rigorous hydrostatic testing (1.5× working pressure) ensures reliability for every Carbon Steel Seamless Pipe.
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