Product Description ACR Straight Tube is mainly used for Air Conditioning and Refrigeration. We can produce the ACR Straight Tube according to ASTM B280, JIS H3300, AS/NZS 1571 standards. The ACR straight tube is also with R410 A rated quality. Generally supplied with lengths of 19ft, 20ft and 6 meters, 5.8 meters, Shorter lengths are available to suit special requirements. Outside Diameter: From 3/8 inch to 4-1/8 inch (British system) Wall Thickness: From 0.030 inch to 0.110 inch (British system) The same outside diameter with different wall thickness also available. ACR Straight Tube is usually supplied in the hard and half hard temper, annealed temper is also available if requested.