| After-sales Service: | Yes |
|---|---|
| Warranty: | Yes |
| Type: | Seamless |
| Technique: | Cold Drawn |
| Material: | Alloy Steel |
| Surface Treatment: | Black |
| Samples: |
|---|
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Audited Supplier DIN 17175 Seamless Steel Tubes For Elevated Temperatures,DIN 17175 13CrMo44 Seamless Steel Tubes may be produced by hot rolling, cold rolling, hot pressing, hot drawing or cold drawing.
Heat treatment temperature of DIN 17175 13CrMo44 Seamless Steel Tubes
| Steel Grade | Thermal processing ºC | NormalizingºC | Tempering | ||
| Grade | Material number | Quenching temperature ºC | Tempering temperature ºC | ||
| 13CrMo44 | 1.7335 | 1100 to 850°C | - | 910-940 | 660-730 |
| Standard:DIN 17175 | grade | Chemical composition | |||||
| C | Si | Mn | P,S | Cr | Mo | ||
| 13CrMo44 | 0.10-0.18 | 0.10-0.35 | 0.40-0.70 | ≤0.030 | 0.70-1.10 | 0.45-0.65 | |
| Standard | grade | Tensile Strength(MPa) | Yield Strength(MPa) | Elongation(%) |
| DIN 17175 | 13CrMo44 | 440-590 | ≥290 | ≥20 |
| Project | Standard | Size range | Tolerance | |||
| Outer diameter | DIN17175 | Hot rolled steel pipe | OD ≤ 100mm | ± 0.75%( Min ± 0.5mm ) | ||
| OD> 100~ 320mm | ± 0.9% | |||||
| Cold drawn steel pipe OD ≤ 120mm | ± 0.6%( Min ± 0.25mm ) | |||||
| Wall thickness | DIN17175 | OD ≤ 130mm | WT ≤ 2Sn | +15%~-10% | ||
| WT > 2Sn~4Sn | +12.5%~-10% | |||||
| WT > 4Sn | ± 9% | |||||
| 130 < OD ≤ 320mm | WT ≤ 0.05OD | +17.5%~-12.5% | ||||
| 0.05OD < WT ≤ 0.11OD | ± 12.5% | |||||
| WT > 0.11OD | ± 10% | |||||
1. Cutting and turning of steel material: First of all, cutting and turning of steel material, replacing the size, and finally cutting out the steel material
To determine the size of the steel used in the process.
2. Change the structure of the steel material: what needs to be done here is to change the structure of the steel material after appropriate heat treatment
Structure to ensure the correct volume of the product after the cold rolling process.
3.cold pressing processing: cold pressing processing is the most critical step in the cold rolling process, through cold pressing processing, can be realized
The originally round steel is compressed and the shape becomes extended.
4.shaping and welding: before shaping and welding, first of all, the use of precision measuring equipment to detect cold press processing
After the size of the steel material to ensure that accurate shaping and welding can be achieved.
5.surface treatment: Surface treatment is the last step of the cold rolling process, including painting, gas, polishing and electricity
Plating. The purpose of the surface treatment is to enhance its visual effect and processing properties, resulting in a quality product.
Used for steam boiler tubes such as superheater reheater.
Baowu Aluminum (Shandong) Co., Ltd. is located in Dongchangfu county, which is the largest aluminum manufacturing county in north China. The factory is only one kilometer from the Jiliao expressway, which make our transportation more convenient. Our total investment is more than one billion yuan for two large factories. The factory covers an area of 120, 000 Square Meters and The company employs more than 500 staff, including over 60 engineering technicians. Our annual output capacity is more than 120, 000 tons of aluminium profiles. Baowu has been awarded the honorary titles of "China Patent Shandong Star Enterprise", "Key Enterprise of Shandong Architectural Profile Industry", "Famous Brand of the Province Construction Machinery Industry", "Shandong Famous Brand", "Well-known Trade Mark of Shandong Province", "China Energy-saving Product Certification", etc. Our company was appraised as a national medium-sized enterprise by the Agricultural Ministry of China in 2004. As a professional aluminum profiles manufacturer, we specialized in manufacturing building door and window, decoration, curtain wall and industrial aluminum profiles.
We have imported advanced manufacturing, checking and testing equipment of aluminum profiles from USA, Germany, Japan, Italy and Switzerland. With advanced checking and testing method and perfect quality guarantee system, our products are produced in strict accordance with the GB/5237 standard and have passed the qualification of ISO9001: 2000 International Quality Management System, ISO14001: 2004 Environmental Management System, 18000: 2001 Occupational Health Management System and 8000: 2001 Social Responsibility Management system. Meanwhile, we provides our customer with many kinds of finishes, such as sand blasting, polishing, brush, anodizing, electrophoresis, ceramic electrophoresis, sparkling electroporesis, powder coating, thermal insulation, fluorocarbon spraying (PVDF COATING), wood grain, etc. With stable product quality and perfect after-sales service, Baowu has been recognized as qualified supplier by lots of domestic famous enterprises such as Country Garden, Haier, Goertek, etc. Our aluminum profiles have been exported to many countries, such as USA, Brazil, Vietnam, India, South Korea, Australia, Germany, Kenya, Russia, Israel, Japan, etc.
Q:How do you control quality?
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