DIN2391 Carbon Seamless Steel Tube
Technology:
Seamless Hot Rolled
Shape:
Round Pipe Tube
Tolerance:
±1%
Gnee Steel (Tianjin) Co., Ltd. is one of the most reliable manufacturers and suppliers of din2391 carbon seamless steel tube in China, also supports customized service with low price. Welcome to wholesale discount din2391 carbon seamless steel tube for sale here from our factory. Contact us for free sample.
DIN2391 Carbon Seamless Steel Tube
The material of DIN2391 is precision seamless steel tube.DIN2391 precision seamless steel tube is a kind of high precision steel tube through cold rolling or cold drawing treatment; full name: cold rolled or cold drawn precision steel tube. Due to the advantages of precision seamless steel tube without oxidized layer on the inner and outer wall, no leakage under high pressure, high precision, high finish, no deformation in cold bending, no cracks in flaring and flattening, etc., so it is mainly used to produce pneumatic or hydraulic components, such as cylinders or oil cylinders, all with seamless tubes. The chemical composition of precision seamless steel tubes has carbon C, silicon Si, manganese Mn, sulfur S, phosphorus P, chromium Cr, and other components.
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Grade
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Q195 = S195 / A53 Grade A
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Q235 = S235 / A53 Grade B / A500 Grade A / STK400 / SS400 /ST42.2
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Q345 = S355JR / A500 Grade B Grade C
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Length
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5.8~12.0 m or as customized
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Surface Treatment
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Prime quality (bared, oiled, color paint, 3LPE, or other anti-corrosive treatment)
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Inspection
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With Chemical Composition and Mechanical Properties Analysis;
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Dimensional and Visual Inspection, also with Nondestructive Inspection.
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Application
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Structure, Electric power transmission tower projects, Piling, Water, Oil & gas pipeline engineering, Mechanical industry,
Municipal projects, Roads and its auxiliary facilities, etc. |
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Chemical Composition:
| Steel grade | Chemical composition, as a percentage by mass | |||||
| Symbol | Material number | C max. |
Si max. |
Mn | P max. |
S max. |
| St 30 Si | 1.0211 | 0.10 | 0.30 | <=0.55 | 0.025 | 0.025 |
| St 30 Al | 1.0212 | 0.10 | 0.05 | <=0.55 | 0.025 | 0.025 |
| St 35 | 1.0308 | 0.17 | 0.35 | <=0.40 | 0.025 | 0.025 |
| St 45 | 1.0408 | 0.21 | 0.35 | <=0.40 | 0.025 | 0.025 |
| St 52 | 1.0580 | 0.22 | 0.55 | <=1.60 | 0.025 | 0.025 |
Mechanical Properties.
| Mechanical properties at room temperature | |||||||||||||
| Steel Grade | Minimum values for the delivery condition | ||||||||||||
| Steel Name | Steel Number | BK | BKW | BKS | GBK | NBK | |||||||
| Rm | A % | Rm | A % | Rm | ReH | A % | Rm | A % | Rm | ReH | A % | ||
| Mpa | Mpa | Mpa | Mpa | Mpa | Mpa | Mpa | |||||||
| St 30 Si | 1.0211 | 430 | 8 | 380 | 12 | 380 | 280 | 16 | 280 | 30 | 290 to 420 | 215 | 30 |
| St 30 Al | 1.0212 | 430 | 8 | 380 | 12 | 380 | 280 | 16 | 280 | 30 | 290 to 420 | 215 | 30 |
| St 35 | 1.0308 | 480 | 6 | 420 | 10 | 420 | 315 | 14 | 315 | 25 | 340 to 470 | 235 | 25 |
| St 45 | 1.0408 | 580 | 5 | 520 | 8 | 520 | 375 | 12 | 390 | 21 | 440 to 570 | 255 | 21 |
| St 52 | 1.0580 | 640 | 4 | 580 | 7 | 580 | 420 | 10 | 490 | 22 | 490 to 630 | 355 | 22 |
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