DIN 2391 ST35 GBK Cold Drawn Seamless Steel Tube 6-89mm OD 2-20mm Thickness for Heat Exchangers
Price:
850 USD/Ton
MOQ:
5 Tons
Delivery Time:
10 Days
Brand:
MITTEL
Product Description
Product Overview
DIN 2391 ST35 GBK cold drawn seamless steel tubes designed for heat exchangers and high-pressure applications. Available in outer diameters from 6-89mm and wall thicknesses from 2-20mm.
Key Specifications
- Outer Diameter Range: 6-114mm
- Wall Thickness Range: 0.5-15mm
- Standard Length: 6-25 meters (custom lengths available)
- Material Grades: ST35, ST45, ST52, A179, and equivalent standards
- Delivery Conditions: BK, BKS, BKW, NBK, GBK
Technical Standards
Complies with DIN 2391, ASTM A179, EN 10216, JIS G3462 and other international standards for heat exchanger applications.
Delivery Conditions
| Designation | Symbol | Description |
|---|---|---|
| Cold finished (hard) | BK | No heat treatment after final cold forming, high deformation resistance |
| Cold finished (soft) | BKW | Limited deformation cold drawing after heat treatment |
| Cold finished and stress-relieved | BKS | Heat treatment after last cold forming process |
| Annealed | GBK | Annealing in controlled atmosphere after last cold forming |
| Normalized | NBK | Annealing above upper transformation point |
Applications
- Heat exchangers, evaporators, and condensers
- Hydraulic and pneumatic systems
- Petrochemical and chemical processing equipment
- Boiler systems and power generation
- Automotive and machinery components
Quality Assurance
- Hydrostatic and nondestructive electric testing
- Standard-compliant heat treatment processes
- Surface condition and grain size verification
- Flattening, flaring, and marking sampling
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Get in Touch
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Company
JIANGSU MITTEL STEEL INDUSTRIAL LIMITED
Location
NO.288,YOUYI ROAD ,XI SHAN DISTRICT,WUXI CITY,CHINA
Contact Person
Gao Ben