We keep records and documents of all cylinders distributed though us. On our Steel cylinders you will find the marking "POLARIS". In case you need the Conformity Declarations of a specific cylinder, please let us know the following data, which are marked on the cylinder shoulder.

Month and year of manufacture

Type of Cylinder (for example single 10 L or Twin 12 L )

Serial number ( consists of 3 letters followed by 3 numbers - for steel cylinders)

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