Standard testing includes tensile, flare , flattening, and reverse flattening, all in accordance with ASTM B-338. Tubing is not released for final inspection until it has passed all physical testing requirements. The tubes are visually inspected for cleanliness, ID and OD surface condition, end condition, and marking. In addition, the Inspector checks length, diameter and ovality, weld, straightness, and wall thickness for conformity to the applicable specification.
All tubing is continuously line marked over the tube length.
The test number identifies the specific weld line and time of welding on which the tube was manufactured. All inspection and testing records contain the test and heat number. A complete production, inspection and testing history can be obtained for a tube by referencing a heat number then isolating a particular test number. B-640D, Rule 41 of Uniform Freight Classification and Rule 22 of National Motor Freight Classification. Box type and size is selected at the customer's discretion depending on size, quantity, transportation mode requested and destination.