Swiss Safety Center provides you with calibration pieces for all common gas cylinders. The calibration pieces have a length of 450mm and are closed with a cap on both sides. The pieces are manufactured according to the standards and have 4 notches. Two notches for longitudinal flaws (internal/external) and two for transversal flaws (internal/external). Furthermore, they have a flat bottom hole to check the wall thickness measurement. A measurement certificate will be delivered with each calibration piece.