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Product Details: JIS G3445 STKM12C/STKM13C Machine Structure GBK/NBK Annealed Cold Drawn Seamless Pipe
Description:
The JIS G3445 STKM12C/STKM13C seamless pipes are precision-engineered carbon steel tubes designed for machine structural applications. Manufactured using a cold drawn seamless process, these pipes offer exceptional dimensional accuracy and surface finish. Available in both GBK (normalized) and NBK (annealed) surface conditions, they exhibit superior mechanical properties, making them ideal for demanding industrial environments.
Key Features:
High-quality carbon steel construction ensures durability and reliability.
Cold drawn seamless manufacturing process guarantees precise dimensions and smooth surface finish.
Available in GBK (normalized) and NBK (annealed) surface conditions to suit various application requirements.
Superior mechanical properties, including high tensile and yield strength, with excellent elongation characteristics.
Suitable for use in machine structures, automotive components, and a wide range of industrial machinery applications.
Technical Specifications:
| Property | STKM12C | STKM13C |
|---|---|---|
| Material | Carbon Steel (STKM12C) | Carbon Steel (STKM13C) |
| Standard | JIS G3445 | JIS G3445 |
| Surface Condition | GBK (Normalized) | NBK (Annealed) |
| Manufacturing Method | Cold Drawn Seamless | Cold Drawn Seamless |
Chemical Composition:
| Element | STKM12C Range | STKM13C Range |
|---|---|---|
| Carbon (C) | 0.20-0.25% | 0.15-0.20% |
| Silicon (Si) | 0.15-0.35% | 0.35% max |
| Manganese (Mn) | 0.30-0.60% | 0.30-0.60% |
| Phosphorus (P) | 0.040% max | 0.040% max |
| Sulfur (S) | 0.040% max | 0.040% max |
Mechanical Properties:
| Property | STKM12C Minimum | STKM13C Minimum |
|---|---|---|
| Tensile Strength | 510 MPa | 410 MPa |
| Yield Strength | 355 MPa | 275 MPa |
| Elongation | 25% | 30% |
| Hardness (HRB) | 88 | 80 |
Dimensional Tolerances:
| OD (mm) | Wall Thickness (mm) Tolerance |
|---|---|
| 6-30 | ±0.08 |
| 30-50 | ±0.15 |
| 50-80 | ±0.25 |
| 80-100 | ±0.30 |
| 100-125 | ±0.40 |
Length: 6 meters (standard), customizable upon request.
Applications:
Machine Structures: The JIS G3445 STKM12C/STKM13C seamless pipes are widely utilized in constructing various machine structures due to their excellent mechanical properties and dimensional accuracy. They are commonly employed in the fabrication of frames, chassis, supports, and other structural components in machinery across industries such as manufacturing, construction, and transportation.
Automotive Components: These cold-drawn seamless pipes find extensive use in the automotive sector for manufacturing critical components like steering columns, axles, suspension systems, and exhaust systems. Their high tensile strength, precise dimensions, and consistent quality make them indispensable in ensuring the safety, performance, and durability of vehicles.
Industrial Machinery Components: The pipes are integral to the production of various industrial machinery components, including hydraulic cylinders, pneumatic systems, conveyor systems, and agricultural equipment. Their superior mechanical properties, coupled with resistance to deformation and corrosion, make them suitable for withstanding heavy loads and harsh operating conditions in industrial environments.
Precision Engineering: In precision engineering applications where accuracy and reliability are paramount, such as in the aerospace and defense sectors, these seamless pipes are utilized for manufacturing critical parts and assemblies. Their consistent dimensions, smooth surface finish, and dependable performance ensure optimal functioning of precision instruments, machinery, and equipment.
Structural Fabrication: Beyond machine-specific applications, these pipes are also employed in general structural fabrication projects where strength, durability, and dimensional precision are essential. They are used in the construction of infrastructure, buildings, bridges, and other civil engineering projects, providing structural support and stability in diverse environments.
Energy Sector: Within the energy sector, including oil and gas exploration, refining, and distribution, these seamless pipes play a crucial role. They are utilized in the construction of pipelines, well casings, and other infrastructure components, ensuring the safe and efficient transportation of fluids and gases across vast distances.
Marine and Offshore Applications: Due to their corrosion resistance and reliability, these pipes are used in marine and offshore applications, including shipbuilding, offshore platforms, and port infrastructure. They withstand the harsh marine environment, providing structural integrity and longevity to maritime structures and equipment.
Product Details: JIS G3445 STKM12C/STKM13C Machine Structure GBK/NBK Annealed Cold Drawn Seamless Pipe
Description:
The JIS G3445 STKM12C/STKM13C seamless pipes are precision-engineered carbon steel tubes designed for machine structural applications. Manufactured using a cold drawn seamless process, these pipes offer exceptional dimensional accuracy and surface finish. Available in both GBK (normalized) and NBK (annealed) surface conditions, they exhibit superior mechanical properties, making them ideal for demanding industrial environments.
Key Features:
High-quality carbon steel construction ensures durability and reliability.
Cold drawn seamless manufacturing process guarantees precise dimensions and smooth surface finish.
Available in GBK (normalized) and NBK (annealed) surface conditions to suit various application requirements.
Superior mechanical properties, including high tensile and yield strength, with excellent elongation characteristics.
Suitable for use in machine structures, automotive components, and a wide range of industrial machinery applications.
Technical Specifications:
| Property | STKM12C | STKM13C |
|---|---|---|
| Material | Carbon Steel (STKM12C) | Carbon Steel (STKM13C) |
| Standard | JIS G3445 | JIS G3445 |
| Surface Condition | GBK (Normalized) | NBK (Annealed) |
| Manufacturing Method | Cold Drawn Seamless | Cold Drawn Seamless |
Chemical Composition:
| Element | STKM12C Range | STKM13C Range |
|---|---|---|
| Carbon (C) | 0.20-0.25% | 0.15-0.20% |
| Silicon (Si) | 0.15-0.35% | 0.35% max |
| Manganese (Mn) | 0.30-0.60% | 0.30-0.60% |
| Phosphorus (P) | 0.040% max | 0.040% max |
| Sulfur (S) | 0.040% max | 0.040% max |
Mechanical Properties:
| Property | STKM12C Minimum | STKM13C Minimum |
|---|---|---|
| Tensile Strength | 510 MPa | 410 MPa |
| Yield Strength | 355 MPa | 275 MPa |
| Elongation | 25% | 30% |
| Hardness (HRB) | 88 | 80 |
Dimensional Tolerances:
| OD (mm) | Wall Thickness (mm) Tolerance |
|---|---|
| 6-30 | ±0.08 |
| 30-50 | ±0.15 |
| 50-80 | ±0.25 |
| 80-100 | ±0.30 |
| 100-125 | ±0.40 |
Length: 6 meters (standard), customizable upon request.
Applications:
Machine Structures: The JIS G3445 STKM12C/STKM13C seamless pipes are widely utilized in constructing various machine structures due to their excellent mechanical properties and dimensional accuracy. They are commonly employed in the fabrication of frames, chassis, supports, and other structural components in machinery across industries such as manufacturing, construction, and transportation.
Automotive Components: These cold-drawn seamless pipes find extensive use in the automotive sector for manufacturing critical components like steering columns, axles, suspension systems, and exhaust systems. Their high tensile strength, precise dimensions, and consistent quality make them indispensable in ensuring the safety, performance, and durability of vehicles.
Industrial Machinery Components: The pipes are integral to the production of various industrial machinery components, including hydraulic cylinders, pneumatic systems, conveyor systems, and agricultural equipment. Their superior mechanical properties, coupled with resistance to deformation and corrosion, make them suitable for withstanding heavy loads and harsh operating conditions in industrial environments.
Precision Engineering: In precision engineering applications where accuracy and reliability are paramount, such as in the aerospace and defense sectors, these seamless pipes are utilized for manufacturing critical parts and assemblies. Their consistent dimensions, smooth surface finish, and dependable performance ensure optimal functioning of precision instruments, machinery, and equipment.
Structural Fabrication: Beyond machine-specific applications, these pipes are also employed in general structural fabrication projects where strength, durability, and dimensional precision are essential. They are used in the construction of infrastructure, buildings, bridges, and other civil engineering projects, providing structural support and stability in diverse environments.
Energy Sector: Within the energy sector, including oil and gas exploration, refining, and distribution, these seamless pipes play a crucial role. They are utilized in the construction of pipelines, well casings, and other infrastructure components, ensuring the safe and efficient transportation of fluids and gases across vast distances.
Marine and Offshore Applications: Due to their corrosion resistance and reliability, these pipes are used in marine and offshore applications, including shipbuilding, offshore platforms, and port infrastructure. They withstand the harsh marine environment, providing structural integrity and longevity to maritime structures and equipment.
