In collaboration with acknowledged organizations, tests are conducted concerning the tensile strength and the hardness of the material in order to guarantee the consistency of the required specifications.
The production of steel elbows follows the standards of DIN2605 3D and 5D and ANSI B16.9. When necessary, steel elbows are marked according to the standard of DIN50049 and are accompanied by certificate DIN2609/3.1.B.