ASME SA-513-2021 pdf free.ELECTRIC-RESISTANCE-WELDED CARBON AND ALLOY STEEL MECHANICAL TUBING.
8.2 DiameterandWallThickness(Cold-RolledSteel) — Variations in outside diameter and inside diameter of “as- welded” and “as-welded and annealed” tubing made from cold-rolled steel are shown in Table 8. Outside diameter tolerances forcold-rolledsteel tubing, sinkdrawnandman- drel drawn, are shown in Table 5. Wall thickness tolerances for “as-welded” tubing made from cold-rolled steel are shown in Table 9. Permissible variations in wall thickness for round tubing, mandrel drawn for closer tolerances, are shown in Table 7. Permissible variations in wall thickness for tubing that has been sink-drawn for closertolerances on outsidediameterare±10% ofthenominalwallor±0.010in. (0.25 mm), whichever is greater.
8.3 Length (Hot- and Cold-Rolled Steel) —Mechanical tubing is commonly furnished in mill lengths 5 ft (1.5 m) and over. Definite cut lengths are furnished when specified by the purchaser. Tolerances for definite cut lengths round tubing shall be as given in Tables 10 and 11.
8.4 Squareness ofCut (Hot- and Cold-Rolled Steel) — When specified, tolerance for squareness of cut of round tubing shall be as given in Table 12. Measurements are made with use of an “L” square and feeler gage. Side leg of square to be equal to tube diameter except minimum length of 1 in. (25.4 mm) and maximum length of 4 in. (101.6 mm). Outside diameter burr to be removed for mea- surement.
8.5 Straightness —The straightness tolerance for round tubing is 0.030 in./3 ft (0.76 mm/1 m) lengths to 8.000 in. (203 mm) outside diameter. For 8.000 in. outside diameter andabove, straightness tolerance is 0.060 in./3 ft(1.52 mm/ 1 m) lengths. For lengths under 1 ft the straightness toler- ance shall be agreed upon between the purchaser and pro- ducer. The test method for straightness measurement is at the manufacturer’s option, unless a specific test method is specified in the purchase order.
8.6 Ovality (Hot- and Cold-Rolled Steel) —The ovality shall be within the tolerances except when the wall thick- ness is less than 3% of the outside diameter.
10. Tubing Sections Other Than Square and Rectangular
10.1 In addition to square and rectangular tubing, many producers supply a variety of special sections, such as oval, streamlined, hexagonal, octagonal, round inside and hexagonal or octagonal outside, ribbed inside or out, trian- gular, rounded rectangular and D shapes. Manufacturing practices limit the size range and section available from the various producers. These special sections may be made through turkshead rolls or through a die with or without use of a mandrel. Since the sections are special, dies and other tools are not held available. Therefore, when inquir- ing for shapes other than square and rectangular, it is essential to give full details as to dimensions and finish.
11. Workmanship, Finish, and Appearance
11.1 The tubing shall be free of injurious defects and shall have a workmanlike finish.
11.2 Unless otherwise specified in the purchase order, the tubing shall be free of scale. In the case of thermally treated tubing a slight amount of color will not be consid- ered cause for rejection.
11.3 When burrs must be removed from one or both ends, it shall be specified in the purchase order.
ASME SA-513 pdf download.