Single, double and triple beaded tubes with reduced ends dimensions and tolerances Single, double and triple beaded tubes with reduced ends are often used as support tubes and hose sleeves for pipe tubing and hose lines. Standard materials are brass and aluminium, other materials (e.g. stainless steel) are available on request. Common dimensions are listed in the following table. Other dimensions and differing designs are available on request. typical dimensions and tolerances (without lenghts) *plus coaxiality deviation of ±10%, relating to the actually existing average