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Standard
| Steel Grade
| C(%) | Si(%) | Mn(%) | S(%) | P(%) |
DIN 2391 | St35 | ≤0.17 | ≤0.35 | ≥0.40 | ≤0.025 | ≤0.025 |
St37 | ≤0.17 | ≤0.35 | ≥0.40 | ≤0.025 | ≤0.025 | |
St37.4 | ≤0.17 | ≤0.35 | ≥0.40 | ≤0.025 | ≤0.025 | |
St45 | ≤0.21 | ≤0.35 | ≥0.40 | ≤0.025 | ≤0.025 | |
St44 | ≤0.21 | ≤0.35 | ≥0.40 | ≤0.025 | ≤0.025 | |
St52 | ≤0.22 | ≤0.35 | ≥1.60 | ≤0.025 | ≤0.025 |
Standard | Steel Grade | Mechanical Performance | ||||
GBK(+A) | NBK(+N) | |||||
Tensile Strength (Rm mpa) | Elongation rate (A5 %) | Tensile Strength (Rm mpa) | Yield Strength (Reh mpa) | Elongation rate (A5 %) | ||
DIN 2391 | St35 | ≥315 | ≥25 | 346-478 | ≥235 | ≥25 |
St37 | ≥315 | ≥25 | 346-478 | ≥235 | ≥25 | |
St37.4 | ≥315 | ≥25 | 346-478 | ≥235 | ≥25 | |
St45 | ≥390 | ≥21 | 440-570 | ≥255 | ≥21 | |
St44 | ≥390 | ≥21 | 440-570 | ≥255 | ≥21 | |
St52 | ≥490 | ≥22 | 490-630 | ≥355 | ≥22 | |
End Shape | plain end | |
Surface Treatment | Oiled, Galvanized, Phosphate etc | |
Technique | Cold drawn & cold rolled | |
Application | 1. Automotive and mechanical pipes | |
2. Petroleum cracking pipes | ||
3. High Pressure Boiler Pipe | ||
4. Low and middle pressure fluid transportation pipeline | ||
5. Chemical fertilizer equipment pipes | ||
6. Heat exchanger pipes | ||
Delivery Conditions | 1. BK (+C) | No heat treatment after last cold forming process. |
2. BKW (+LC) | After last heat treatment there is a light finishing pass (cold drawing) | |
3. BKS (+SR) | After the final cold forming process the tubes are stress relieve annealed. | |
4. GBK (+A) | After the final cold forming process the tubes are annealed in a controlled atmosphere. | |
5. NBK (+N) | After the final cold forming process the tubes are annealed above the upper transformation point in a controlled atmosphere. | |
Package | 1. Bundle Packing. | |
2. Plain end or vanished as per customer's request. | ||
3. Wrapped in waterproof paper. | ||
4. Sackcloth with several steel strips. | ||
5. Pack in heavy tri-wall boxes. | ||
Our fuel lines steel tubes find applications in various industrial equipment, including generators, compressors, and machinery. Whether in stationary industrial applications or mobile equipment, our tubes deliver consistent performance and reliability, ensuring efficient fuel delivery and operation
Standard
| Steel Grade
| C(%) | Si(%) | Mn(%) | S(%) | P(%) |
DIN 2391 | St35 | ≤0.17 | ≤0.35 | ≥0.40 | ≤0.025 | ≤0.025 |
St37 | ≤0.17 | ≤0.35 | ≥0.40 | ≤0.025 | ≤0.025 | |
St37.4 | ≤0.17 | ≤0.35 | ≥0.40 | ≤0.025 | ≤0.025 | |
St45 | ≤0.21 | ≤0.35 | ≥0.40 | ≤0.025 | ≤0.025 | |
St44 | ≤0.21 | ≤0.35 | ≥0.40 | ≤0.025 | ≤0.025 | |
St52 | ≤0.22 | ≤0.35 | ≥1.60 | ≤0.025 | ≤0.025 |
Standard | Steel Grade | Mechanical Performance | ||||
GBK(+A) | NBK(+N) | |||||
Tensile Strength (Rm mpa) | Elongation rate (A5 %) | Tensile Strength (Rm mpa) | Yield Strength (Reh mpa) | Elongation rate (A5 %) | ||
DIN 2391 | St35 | ≥315 | ≥25 | 346-478 | ≥235 | ≥25 |
St37 | ≥315 | ≥25 | 346-478 | ≥235 | ≥25 | |
St37.4 | ≥315 | ≥25 | 346-478 | ≥235 | ≥25 | |
St45 | ≥390 | ≥21 | 440-570 | ≥255 | ≥21 | |
St44 | ≥390 | ≥21 | 440-570 | ≥255 | ≥21 | |
St52 | ≥490 | ≥22 | 490-630 | ≥355 | ≥22 | |
End Shape | plain end | |
Surface Treatment | Oiled, Galvanized, Phosphate etc | |
Technique | Cold drawn & cold rolled | |
Application | 1. Automotive and mechanical pipes | |
2. Petroleum cracking pipes | ||
3. High Pressure Boiler Pipe | ||
4. Low and middle pressure fluid transportation pipeline | ||
5. Chemical fertilizer equipment pipes | ||
6. Heat exchanger pipes | ||
Delivery Conditions | 1. BK (+C) | No heat treatment after last cold forming process. |
2. BKW (+LC) | After last heat treatment there is a light finishing pass (cold drawing) | |
3. BKS (+SR) | After the final cold forming process the tubes are stress relieve annealed. | |
4. GBK (+A) | After the final cold forming process the tubes are annealed in a controlled atmosphere. | |
5. NBK (+N) | After the final cold forming process the tubes are annealed above the upper transformation point in a controlled atmosphere. | |
Package | 1. Bundle Packing. | |
2. Plain end or vanished as per customer's request. | ||
3. Wrapped in waterproof paper. | ||
4. Sackcloth with several steel strips. | ||
5. Pack in heavy tri-wall boxes. | ||
Our fuel lines steel tubes find applications in various industrial equipment, including generators, compressors, and machinery. Whether in stationary industrial applications or mobile equipment, our tubes deliver consistent performance and reliability, ensuring efficient fuel delivery and operation
