| After-sales Service: | Support Online |
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| Warranty: | 1year |
| Type: | Seamless |
| Technique: | Cold Drawn |
| Material: | Alloy Steel |
| Surface Treatment: | Black/Oiled/Galvanization |
| Samples: |
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| Customization: |
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Suppliers with verified business licenses
Audited Supplier 
| Product introduction | ||||
| Special-shaped seamless steel tube is the general name of seamless steel tube with other cross-sectional shapes except circular tube. According to the different cross-sectional shapes and sizes of steel pipes, it can be divided into special-shaped seamless steel pipes with equal wall thickness (code D), special-shaped seamless steel pipes with unequal wall thickness (code BD) and special-shaped seamless steel pipes with variable diameter (code BJ). | ||||
| Properties of special-shaped steel pipes; | "1. Performance index of special-shaped steel pipe-plasticity 2. Performance index of special-shaped steel pipe-hardness 3. Performance index of special-shaped steel pipe-fatigue 4. Performance index of special-shaped steel pipe-impact toughness 5. Performance index of special-shaped steel pipe-strength " |
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| The purpose of special-shaped steel pipe: | Special-shaped seamless steel pipes are widely used in various structural parts, tools and mechanical parts. | |||
| Special-shaped steel pipes are divided into: | Special-shaped steel pipes such as external hexagonal internal circular steel pipe, external hexagonal steel pipe, internal and external hexagonal steel pipe, flat oval steel pipe, oval steel pipe, triangular pipe, L-shaped steel pipe, octagonal pipe, mushroom-shaped pipe, bread-shaped pipe, D-shaped pipe, concave pipe, convex pipe, umbrella-shaped pipe, P-shaped pipe and ingot-shaped pipe are produced according to users' needs. | |||
| Special-shaped pipe profile | GB standard | American Standard | European standard | Japan |
| Q235 | Gr.65 | S235JR | SS400 | |
| 20# | 1015 | C20E/1151 | S20C | |
| 45# | 1045 | C45E/1191 | S45C | |
| Q345B | ||||
| 40Cr | 5140 | 41Cr4 | Scr440 | |
| 35CrMo | 4135 | 34CrMo4 | SCr435 | |
| 42CrMo | 4140 | 42CrMo4 | SCM440 | |
| GCr15 | 52/00 | /00Cr6 | SuJ2 | |
Characteristics and application: This steel series is imported from American AISI/SAE standard steel grade 8720. Its hardenability is similar to that of 20CrNi steel, and its strength is higher than that of 20CrNi steel. Used to manufacture gears for engines and transmission systems of small and medium-sized cars and tractors; It can also replace 12CrNi3 to manufacture carburized steel and carbonitriding parts with higher requirements for central performance, such as the jaw and cone body of cone bits for oil drilling and metallurgical mining.
1. Who are we?
Our headquarter is located in Shandong, China. Since 2022, we have sold to North America (60.00%), Western Europe (14.00%) and South America (6.00%). There are about 11-50 people in our office.
2. How do we guarantee quality?
Always provide pre-production samples before mass production;
Always carry out final inspection before shipment;
3. What can you buy from us?
Copper, aluminum, die steel, titanium, customized machine parts
4. Why should you buy from us instead of other suppliers?
The company has 25 years of production experience. It has advanced precision production equipment, modern large warehouse, 200000 tons of inventory goods and a number of long-term stable cooperative customers.
5. What services can we provide?
Accepted delivery conditions: FOB, CFR, CIF, EXW
Accepted payment currency: US dollar, Euro, Japanese yen, Canadian dollar, Australian dollar, Hong Kong dollar, British pound, RMB, Swiss franc;
Accepted payment type: T/T, L/C, D/P D/A, PayPal;
Optional ports: Tianjin, Shanghai, Guangzhou;
Spoken: English, Chinese
6. How can we get your price?
A. We need the following information to quote for you:
1). Product Name
2). standard
3). Material grade (chemical composition)
4). dimension
5). amount
6). Special part drawin
Suppliers with verified business licenses
Audited Supplier 
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