Project Description
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We are committed to integrate steel resources in china and serve the global steel market. We have 15+ years of experience in steel researching, production, managing and sales.
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Besides exhibiting high precision, these products tend to have a good surface quality and great straightness as well. There are several specifications that cover high precision tubes including – din 17175, EN 10305-1 and din 2391. Another fitting advantage of using the specification is that the inner diameter of various steel grade Precision Seamless Tubes could be constructed into a hexagon shaped one.
Furthermore, the performance of these steel High precision Tubes tends to be superior, with the metal becoming relatively dense. Compared with solid steel pipes, including a steel round furnished seamless steel pipe, the precision seamless steel tubes are light in weight, even if both the varieties of pipes have the same bending and torsional strength. Amongst numerous steel sections, they gravitate towards the economical side. Therefore, the din 2391 seamless precision steel tubes widely adopted in the assembling of anatomical parts as well as mechanical parts. In addition, the manufacturing of EN 10305-1 Precision cold drawn steel tube can enhance material utilization, conserve materials and processing man-hours & simplify manufacturing processes, as well. Generally, precision seamless pipes such as din 17175 Cold Rolled Steel Tube are accepted in industries with high precision requirements, as opposed to their regular seamless counterparts, which are mostly applied without precision specifications. However, the expense of a precision seamless pipe of an identical specification tends to be much more high-priced in comparison to that of regular seamless pipes.
fushun is one of the large suppliers for high quality DIN 2391 Material. Carbon Steel DIN 2391 Tubing has various outstanding attributes to provide like having sturdiness, dimensional accuracy, toughness. DIN 2391 EN 10305 1 standard specifies the Seamless steel tubes used for Automobile and Mechanical.
Machinery use
Auto shock reducer inner cylinder
Oil cylinder tube
Motorcycle shock reducer steel tubes
Marking:
Weight of bundle – upto 5000 kg upon request of client’s.
Pipes are supplied in round bundles or hexagonal bundles tied with steel strip.
Each bundle is furnished with three tags.
–Precise custom outer diameter and inner diameter
–Tight tolerances, resulting in reduced machine time / Dimensional accuracy
–Smooth and Clean OD and ID surfaces
–Excellent machining characteristics
–Wider range of physical properties attainable through process and annealing options
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 |
The following alloying elements may be added: Nb: <=0,03%; Ti: <=0,03%; V: <=0,05%; Nb + Ti + V: <=0,05%. |
Final supply conditions:
Designation | Symbol | Description |
Cold finished (hard) | BK | Tubes do not undergo heat treatment following the final cold forming and, thus, have a rather high resistance to deformation. |
Cold finished (soft) | BKW | The final heat treatment is followed by cold drawing involving limited deformation. Appropriate further processing allows a certain degree of cold forming (e.g. bending, expanding). |
Cold finished and stress-relieved | BKS | Heat treatment is applied following the last cold forming process. Subject to appropriate processing conditions, the increase in the residual stresses involved enables both forming and machining to a certain degree. |
Annealed | GBK | The last cold forming process is followed by annealing in a controlled atmosphere. |
Normalized | NBK | The last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere. |
Condition on delivery:
Steel Grade | BK | BKW | GBK | NBK | ||||
Code No. | Tensile Strength N/mm2 min | Elongation at rupture N/mm2 min | Tensile Strength N/mm2 min | Elongation at rupture N/mm2 min | Tensile Strength N/mm2 min | Elongation at rupture N/mm2 min | Tensile Strength N/mm2 min | Elongation at rupture N/mm2 min |
St30 Si | 400 | 8 | 330 | 12 | 280 | 30 | 290-420 | 30 |
St30 Al | 400 | 8 | 330 | 12 | 280 | 30 | 290-420 | 30 |
St 35 | 440 | 6 | 370 | 10 | 315 | 25 | 340-470 | 25 |
St 45 | 540 | 5 | 470 | 8 | 390 | 21 | 440-570 | 21 |
St 52 | 590 | 4 | 540 | 7 | 490 | 22 | 490-630 | 22 |
Competitive Advantage:
Manufacturer with more than 250,000Tons/Year, >60% shipped to more than 35 Countries.We aims at manufacturing quality pipes & tubes with reasonable and competitive price, good quality for our global customers.
Product Description /Specifications
Production Range | Outer Diameter:10-120mm (0.4 inch – 4.7 inch) |
Wall Thickness:1-20mm (0.04 inch – 0.78 inch) | |
Material / Grade | Carbon Steel: GB/T 8162 & 8163 & 3639: 10#, 20#, 35#, 45#, 55#, Q235B, Q235C, CF53, A105 ASTM A519: 1010, 1020, 1026, 1035, 1045, 1050 DIN17121/EN 10297-1, DIN1629/DIN2391/EN 10305-1: C10/CK10, C22/CK22, C35/CK35, C45/CK45, CF53 JIS3441/JIS3444/JIS3445: STKM11A, STKM12A/STKM12B/STKM12C, STKM13A/STKM13B/STKM13C JIS G4051: S10C, S20C, S25C, S35C, S45C, S55C |
Alloy Steel: GB/T 8162 & 8163 & 3639: 16Mn(Q345B), 20Cr, 40Cr, 15CrMo, 20CrMo, 28CrMo, 30CrMo, 35CrMo, 42CrMo, 20CrMnTi, 40MnMoV, 20Mn2, ZF6, 16MnCr5, 20MnCr5, 38Mn2V, 09CrCuSb(ND) ASTM A519: 5120, 5140, 4130, 4135, 4140 DIN17121/EN 10297-1, DIN1629/DIN2391/EN 10305-1: ST52, EN10084-1998 20Cr4, 41Cr4, 15CrMo4, 25CrMo4, 35CrMo4, 42CrMo4, 16MnCr5 JIS3441/JIS3444/JIS3445: SCM432/SCRRM3, SCM4 JIS G4053: JIS SCr420, JIS SCr440, SCM415, SCM420 | |
Tolerance | Tolerance ±0.15mm,Superior products ±0.05mm, Can be customized according to customer’s requirements |
Technique | Cold Drawn / Cold Rolled |
Shape | Round |
Further Processing for Steel Tubes | Final Annealing, Cutting, Chamfer, Threading, Inner diameter or Outer Diameter Lathe, Surface Shot Blasting, Laser Marking |
Cold Drawn VS Cold Rolled Technology
Cold Drawing
- Through special alloy steel mould cold drawn forming
- Small deformation
- Inside and outside surface bright and clean
- Hardness moderate
- Suitable for machining
- Special shape tube necessary procedure
Cold Rolling
- Through the roller repeatedly rolling the outer surface forming
- Large deformation
- Outer surface bright with a mirror effect
- High hardness
- Suitable for terminal products
- High surface requirement tube necessary procedure
Combination of Cold Drawing and Cold Rolling
- High-end products adopt the combination mode of cold drawn and cold rolled.
- Suitable for subsequent machining
- Perfect surface
Examples: rifle barrel, shock absorber
International Steel Grade Table
International Steel Grade Table | |||||
China | ASTM A519 | DIN | JIS 3445 | JIS G4051 | |
Carbon Steel | 10# | 1010 | DIN C10/CK10 | STKM11A | S10C |
20# | 1020 | DIN C22/CK22 | STKM12A/STKM12B/ STKM12C | S20C | |
25# | 1026 | STKM13A/STKM13B/ STKM13C | S25C | ||
35# | 1035 | DIN C35/CK35 | S35C | ||
45# | 1045 | DIN C45/CK45 | S45C | ||
55# | S55C | ||||
CF53 | 1050 | CF53 | |||
Q235B | |||||
Q235C | |||||
A105 | |||||
Alloy Steel | 16Mn(Q345B) | St52 | |||
20Cr | 5120 | 20Cr4 (EN 10084-1998) | JIS SCr420( JIS G4053) | ||
40Cr | 5140 | 41Cr4(1.7035) | JIS SCr440( JIS G4053) | ||
15CrMo | 15CrMo4 | SCM415 (JIS 4053) | |||
20CrMo | 25CrMo4(1.7218) | SCM420 (JIS 4053) | |||
28CrMo | |||||
30CrMo | 4130 | ||||
35CrMo | 4135 | 35CrMo4(1.7220) | SCM432/SCRRM3 | ||
42CrMo | 4140 | 42CrMo4(1.7225) | SCM4 | ||
20CrMnTi | |||||
40MnMoV | |||||
20Mn2 | |||||
ZF6 | 16MnCr5(1.7131) | ||||
16MnCr5 | |||||
20MnCr5 | |||||
38Mn2V | |||||
36Mn2V | |||||
09CrCuSb(ND钢) | |||||
Steel Tube Standard | Seamless Steel Tubes for Structural Purposes GB/T 8162-2018 | ASTM A519 | DIN17121/EN 10297-1 | JIS3441/JIS3444/JIS3445 | |
Seamless Steel Pipes for Liquid Service GB/T 8163-2018 | ASTM A106 | ||||
Seamless Cold-drawn or Cold-rolled Steel Tubes for Precision Applications GB/T 3639-2009 | DIN1629/DIN2391 / EN 10305-1 | ||||
Cold Drawn Shaped Steel Tubes GB/T 3094-2012 | ASTM A500 / ASME SA500 | ||||
Seamless Steel Tubes for Automobile Stabilizer Bar GB/T 33821-2017 | |||||
Rebar Coupler Standard | Couplers for Rebar Mechanical Splicing JG/T 163-2013 |
DIN 2391-1 Cold Drawn Tube Specification
Standards | DIN 2391-1 Cold Drawn Tube |
DIN 2391-1 Cold Drawn Seamless Pipe Size | 4 to 219mm W. T.: 0.5 to 20mm |
DIN 2391-1 Cold Drawn Welded Pipe Size | 5.0 mm – 1219.2 mm |
DIN 2391-1 Cold Drawn EFW Pipe size | 5.0 mm – 1219.2 mm |
DIN 2391-1 Cold Drawn Tube Swg & Bwg | 10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg. |
DIN 2391-1 Cold Drawn Pipe Schedule | SCH5, SCH10, SCH10S, SCH20, SCH30, SCH40, SCH40S, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
DIN 2391-1 Cold Drawn Seamless Tube Size | 3.35 mm OD To 101.6 mm OD |
DIN 2391-1 Cold Drawn Welded Tube Size | 6.35 mm OD To 152 mm OD |
Swg & Bwg | 10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg. |
DIN 2391-1 Cold Drawn Tube wall thickness | 0.020″ –0.220″, (special wall thicknesses available) |
Length | Single Random, Double Random, Standard & Cut length Pipe & Tube |
Finish | Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF |
Form | Round, Hydraulic, ‘U’ bent or Hollow,LSAW, Boiler, Straight Pipe, Clad Pipe, Rectangular, Square Pipe Etc |
Type | Welded, Seamless, ERW, EFW, Fabricated Pipe, ‘U’ bent or Hollow, Hydraulic, LSAW, Boiler, Straight Tube, Tube Coil, Round, Rectangular, Square Tube etc |
End | Plain End, Beveled End, Treaded Pipe & Tube |
Marking | All DIN 2391-1 Cold Drawn Tube are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or according to the customer’s request.) |
Application | Oil Pipe & Tube, Gas Pipe & Tube, Fluid Pipe & Tube, Boiler Pipe & Tube, Heat exchanger Tube |
Value Added Service | Draw & Expansion as per required Size & Length, Polish (Electro & Commercial) Annealed & Pickled Bending, Machining Etc. |
Test Certificate | Manufacturer Test Certificate Laboratory Test Certificate from Govt. Approved Lab. Under Third Party Inspection |
We can also cut, thread, and groove DIN 2391-1 Cold Drawn Tube to meet your specifications. |
DIN 2391-1 Chemical Composition
Grade | Chemical Composition(%): | ||||
C max | Si max | Mn | P max | S max | |
DIN 2391 St 35 | 0.17 | 0.35 | ≥0.40 | 0.025 | 0.025 |
DIN 2391 St 45 | 0.21 | 0.35 | ≥0.40 | 0.025 | 0.025 |
DIN 2391 St 52 | 0.22 | 0.55 | ≤1.60 | 0.025 | 0.025 |
Grade | Chemical Composition(%): | ||||||
Steel name | Steel number | C max | Si max | Mn | P max | S max | Al min |
E215 | 1.0212 | 0.10 | 0.05 | 0.70 | 0.025 | 0.025 | 0.025 |
E235 | 1.0308 | 0.17 | 0.35 | 1.20 | 0.025 | 0.025 | – |
E355 | 1.0580 | 0.22 | 0.55 | 1.60 | 0.025 | 0.025 | – |
DIN 2391 ST35 Mechanical Properties
Grade | BK | BKW | BKS | GBK | NBK | |||||||
RmN/mm min | min | RmN/mm min | min | N/mm min | ReH N/mm min | min | N/mm min | min | N/mm min | ReH N/mm min | min | |
DIN 2391 St35 | 480 | 6 | 420 | 10 | 420 | 315 | 14 | 315 | 25 | 340-470 | 235 | 25 |
DIN 2391 St45 | 580 | 5 | 520 | 8 | 520 | 375 | 12 | 390 | 21 | 440-570 | 235 | 21 |
DIN 2391 St52 | 640 | 4 | 580 | 7 | 580 | 420 | 10 | 490 | 22 | 490-630 | 355 | 22 |
Grade | Minimum values for the delivery condition | ||||||||||||
Steel name | Steel number | + C | + LC | + SR | + A | + N | |||||||
Rm Mpa | A% | Rm Mpa | A% | Rm Mpa | ReH Mpa | A% | ReH Mpa | A% | Rm Mpa | ReH Mpa | A% | ||
E215 | 1.0212 | 430 | 8 | 380 | 12 | 380 | 280 | 16 | 280 | 30 | 290-430 | 215 | 30 |
E235 | 1.0308 | 480 | 6 | 420 | 10 | 420 | 350 | 16 | 315 | 25 | 340-480 | 235 | 25 |
E355 | 1.0580 | 640 | 4 | 580 | 7 | 580 | 450 | 10 | 450 | 22 | 490-630 | 355 | 22 |
Other Types of DIN 2391 Carbon Steel Tubes
Carbon Steel DIN 2391 ST35 Tubes Carbon Steel DIN 2391 ST45 Tubes DIN 2391 ST52 Tubes DIN 2391 ST35 High Precision Seamless Tubes DIN 2391 ST45 Seamless Tubes DIN 2391 Thick Wall High Precision Steel Tube DIN 2391 ST52 Cold Drawn Carbon Seamless Steel Tubes | High Quality DIN 2391 ST45 Tubes DIN 2391 ST52 Steel Tubes DIN 2391 Thin Wall Carbon Seamless Precision Steel Tubes DIN 2391 ST35 Cold Drawn Carbon Steel Tubes DIN 2391 ST45 Precision Seamless Steel Tubes DIN 2391 EN 10305 Tubes DIN 2391 ST35 Steel Tubes |
We offer wide range of Tube DIN 2391, DIN 2391-1 Cold Rolled Steel Tubes at factory price.
Fushun provide you with robust quality of DIN 2391-1 Cold Drawn Tube & DIN 2391-1 Cold Drawn Steel Tube in a wide range
Experienced 15+ Years
Our ability to purchase materials directly from leading mills at the best possible price will give you the competitive edge. This coupled with a skilled workforce dedicated to embracing the demands of the markets.
We Can Supply Follows Products with High Quality:
- Cold Rolled Steel Tube
- Cold Drawn Steel Tube
- Hollow Bar
- Honed Tube
- Plated Tube
- Plated Bar
- Boiler Tube
All Products According Quality Standard Strictly:
- ASTM: ASTM A519, ASTM A513.
- JIS:JIS G3441, JIS G3445, JIS G3466, JIS G3459.
- DIN: DIN1626, DIN1629, DIN2391, DIN2393, DIN2448, DIN2458.
- EN: EN10305.
- BS: BS6323.
Wide Range of Pipes to Fit Your Industry:
- OD from 5mm to 820mm.
- Wall Thickness from 0.1 to 100mm.
- Length up to 50mtr per pc.
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