DIN 2391 ST37 Seamless Precision Steel Tubes Cold Drawn Seamless Carbon Steel Pipe
Material
DIN 2391 ST37 seamless precision steel tubes are manufactured from medium carbon steel (carbon steel) with excellent weldability, machinability, and strength. The material is cold drawn to achieve tighter tolerances and superior surface finish compared to hot finished pipes.
Specification
- Standard: DIN 2391
- Material Grade: ST37
- Type: Seamless cold drawn precision steel tubes
- Manufacturing Process: Hot finished seamless followed by cold drawing/pilgering
- Dimensions: Outer diameter and wall thickness as per DIN 2391 standards, precise tolerances ensured
- Surface finish: Smooth, precise with minimal machining allowances
Key Features
- High dimensional accuracy and tight tolerances
- Smooth surface finish without scale or rust
- Excellent mechanical properties suitable for engineering applications
- Good weldability and machinability
- Available in various sizes and lengths according to DIN 2391 standards
- Widely used in hydraulic cylinders, mechanical parts, automotive components, and construction
Chemical Composition
| Element | Min (%) | Max (%) |
| Carbon (C) | 0.12 | 0.20 |
| Manganese (Mn) | 0.30 | 0.65 |
| Phosphorus (P) | — | 0.045 |
| Sulfur (S) | — | 0.045 |
| Silicon (Si) | — | 0.40 |
| Copper (Cu) | — | 0.35 |
| Nickel (Ni) | — | 0.30 |
| Chromium (Cr) | — | 0.30 |
| Molybdenum (Mo) | — | 0.08 |
Note: Actual composition may vary slightly depending on manufacturer specifications.
Mechanical Properties
| Property | Value (Typical) |
| Tensile Strength (Rm) | 370 - 510 MPa |
| Yield Strength (Re) | ≥ 235 MPa |
| Elongation (A5) | ≥ 26% |
| Hardness (Brinell) | Max 150 HB |
| Impact Energy (Charpy V-notch) | ≥ 27 J (at 20°C) |
Steel Grade
The steel grade ST37 corresponds to a mild/medium carbon steel with moderate strength and good ductility, used widely in structural and mechanical engineering.
Application
- Hydraulic and pneumatic cylinders
- Precision mechanical parts
- Automotive and machine building industry
- Structural components requiring tight tolerances and high surface quality
- Axles, shafts, pins, and bolts
- Furniture and fitness equipment manufacturing
Equivalent Grades
| Standard | Equivalent Grade |
| DIN EN 10025 | S235JR |
| DIN 17100 | St 37-2 |
| ISO 630 | C22E |
| ASTM A106 | Grade B (similar but not identical) |
TORICH Group, an one-stop service provider of raw materials engaged in raw material production, R&D and
trade, has 30+ years of experience in the market, exported to 56 +countries, and won good reputation and
credibility among domestic and foreign customers.
The company's production plant covers an area of over 10,000 square meters, with an annual production
capacity of 50,000 tons of materials and a comprehensive trading and warehousing capacity of 100,000 tons, which can satisfy customers' personalized needs for raw materials in terms of diversity and timeliness.
The group holds shares in more than ten domestic production entities, whose main products include
seamless steel pipes ( carbon steel and stainless steel), welded pipes ( carbon steel and stainless steel), pipe fittings ( carbon steel and stainless steel), titanium (titanium tubes, titanium rods, titanium cakes, titanium plates, etc.), aluminum (aluminum tubes, aluminum rods, aluminum die casting, aluminum casting, CNC machining), and CNC deep processing of metal materials such as tubes, rods, and casting parts.
Over the past 30 years, the company has been gradually developing new technologies and materials to meet
the growing needs of customers and various diversified needs, exporting to more than 56 countries and still
increasing the number of exporting countries, aiming to help customers to solve the demand for raw materials, and to facilitate one-stop purchasing for customers.
Q: Are you trading company or manufacturer ?
A: manufacturer,also can do trading.
Q: How long is your delivery time?
A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples? is it free or extra ?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact with me.
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DIN 2391 ST37 Seamless Precision Steel Tubes Cold Drawn Seamless Carbon Steel Pipe Images
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