Germany has a number of specific requirements for seamless steel pipes. These pipes are used mainly in industries such as chemical, automotive, and engineering.
In addition to meeting standards for material composition and performance, precision is also an important requirement for these pipes. Seamless steel pipes can be produced using either hot-rolled or cold-rolled steel, and two standard grades are most commonly used for these processes.
The first grade is the DIN 2391, which is commonly used for automotive and engineering applications. This type of steel offers the highest level of precision, durability, and strength. It offers excellent welding characteristics, as well as resistance to corrosion, pitting, and cracking.
The second grade is the DIN EN 10216-2, which is generally used in chemical processes. This grade offers improved weldability and better strength. It is also more resistant to corrosion and better suited for pressure applications.
When it comes to weldability, the DIN EN 10216-2 offers improved weld performance over the DIN 2391. However, when it comes to strength, the DIN 2391 is the better choice.
It is important to note that the grades of steel are only part of the process. The selection of the right welding and manufacturing techniques is also a crucial factor in determining the performance of the pipe.
For these pipes to meet requirements, they need to be dimensionally correct. This means that the correct tolerances on the diameter, length, wall thickness, and heat treatment must all be achieved.
High-precision measures are also important in order to reduce possible welding defects. A good manufacturing process is necessary to maintain the integrity of the tubing.
Good pipe handling is also essential if the desired performance is to be achieved. The condition of the exterior surface should be carefully monitored to prevent dents, scratches, and other surface damage.
Finally, specialized testing will help to determine the quality of each pipe. This testing involves a number of tests to measure the parameters, such as endurance and creep resistance. The quality of the weld is also tested to ensure that the pipe can withstand high pressures.
Germany has a number of stringent requirements when it comes to seamless steel pipes. The right grades, welding and manufacturing techniques, pipe handling, and testing are all vital to ensure that the steel pipes meet the necessary standards.
