Description of goods:
| Standard | DIN2391, EN10305, DIN17175,JIS G3445, ASTM A519, GB/T 8713... |
| Material | ST37/ST45/ST52/25Mn/27SiMn/E355/SAE1026/STKM13C..... |
| Outer diameter | 20mm-480mm |
| Wall thickness | 3mm-25mm |
| Length | 1-12m, random or fixed, as the clients' requests |
| Technology | High precision Cold drawn/ Cold rolled |
| Heat treatment | BK/BKS/NBK |
| Advantages | 1.Short delivery time |
| 2.Quality assurance | |
| 3.Competitive price | |
| 4.Superior Service |
Chemical composition of Materials:
| Steel Grade | C | Si | Mn | P≤ | S≤ | Cu≤ | Ni≤ | Cr≤ | Mo≤ | V≤ |
| ASTM A106 B | ≤0.3 | / | ≤1.2 | 0.05 | 0.06 | 0.4 | 0.4 | 0.4 | 0.15 | 0.08 |
| ST35 | ≤0.18 | 0.15-0.35 | 0.35-0.65 | 0.035 | 0.035 | 0.25 | 0.25 | 0.25 | / | / |
| ST45 | ≤0.25 | 0.15-0.35 | 0.5-0.8 | 0.035 | 0.035 | 0.25 | 0.25 | 0.25 | / | / |
| ST52 | ≤0.2 | ≤0.55 | ≤1.5 | 0.035 | 0.035 | 0.25 | 0.25 | 0.25 | / | / |
| CK45 | 0.42-0.5 | 0.17-0.37 | 0.5-0.8 | 0.035 | 0.035 | 0.25 | 0.25 | 0.25 | / | / |
Mechanical Properties
| Steel Grade | Rm MPa | ReH Mpa |
| ST45 | ≥520 | ≥375 |
| ST52(E355) | ≥600 | ≥520 |
| SAE1026 | ≥600 | ≥510 |
| 16Mn | ≥600 | ≥520 |
| 20# | ≥520 | ≥375 |
Tolerance table of Steel tube
The flow chart of the production process: 
Factory & Machine Display:
Product Display:
Products Testing:
Application:
To be used in a hydraulic system, automobile, nested card connector(pipe joints) with matching.
Company Show:
1. Introduction to the Company
JIANNING METALS GROUP was established in 2001, With more than 10 years of import and export experience, Jianning Metals has been an influential exporter in the global metal products market. More than 160 customers from 26 countries and regions have established long-term business relationships with us.
Our main business range is listed as follows:
Carbon Seamless Steel Pipe/tube
Hydraulic cylinder tube(Honed tube)
Hard chrome plated rod/bar/shaft(Piston rod)
Auto exhaust system: (exhaust pipe, muffler tips, carbon steel, and stainless steel mufflers, flexible pipe)
We sincerely welcome friends from all over the world contact us to establish mutually beneficial business relationships
2. Our Company View
3. Our Customers
1. Q: Are you a trading company or Manufacturer?
A: Of course, we are a manufacturer. We are in the field of a Seamless steel tube for more than 20 years.
2. Q: What is your delivery time?
A: As normally, it is 25~60 days after you confirm the order. If your order is urgent, we would like to try our best to meet your requests.
3. Q: What is your main payment term?
A: They are T/T and L/C. Like 30% advance payment via T/T, balance pay after receiving copy BL; 100% irrevocable L/C at sight. If you have any other requests, we can talk to it again.
4.Q: What is your main market?
A: America, India, Korea, Pakistan, Turkey, Iran, Australian, and so on.
5. Q: What is your advantage?
A: We are 9 years Alibaba gold and verified supplier; Our trade assurance limit is 296000US Dollars.
6. Q: Why we choose you as our supplier?
A: All of our clients have reordered from us. Give us one order, you can feel our price, quality, and service. Then, you will know us.