ASME SA-135 SA-135M-2021 pdf free.Electric-Resistance-Welded Steel Pipe.
13. Workmanship, Finish, and Appearance 13.1 The finished pipe shall be reasonably straight and free of defects. Surface imperfections in excess of 12.5 % of the nominal wall thickness shall be considered defects. 13.2 End Finish: 13.2.1 Schedule 10 Pipe—Pipe furnished to Schedule 10 shall be plain end only. All inside and outside cutting burrs shall be removed. This generally involves breaking the corners. 13.2.2 Ends, Plain End Pipe—Unless otherwise specified, plain end pipe for use with the Dresser or Dayton type coupling shall be reamed both outside and inside sufficiently to remove all burrs. Plain end pipe for welding shall be beveled on the outside to an angle of30° with a tolerance of+ 5° and – 0° and with a width of flat at the end of the pipe of 1 ⁄ 16 6 1 ⁄ 32 in. [1.6 6 0.8 mm]. When material is ordered beveled to any other than a 30° angle, it should be understood that the angle is to be measured from a line drawn perpendicular to the axis of the pipe. This means that a greater amount of material is removed with a 60° angle than with a 30° angle. Pipe shall be sufficiently free from indentations, projections, or roll marks for a distance of 8 in. [200 mm] from the end of the pipe to make a tight joint with the rubber gasket type of coupling. All plain end pipe intended for Dresser or Dayton type joints or for welding, sizes NPS 10 [DN 250] and smaller in outside diameter specified, shall be not more than 1 ⁄ 32 in. [0.8 mm] smaller than the outside diameter specified for a distance of 8 in. [200 mm] from the ends of the pipe and shall permit the passing for a distance of8 in. [200 mm] ofa ring gauge that has a bore 1 ⁄ 16 in. [1.6 mm] larger than the outside diameter specified of the pipe. Sizes larger than NPS 10 [DN 250] shall be not more than 1 ⁄ 32 in. [0.8 mm] smaller than the nominal outside diameter for a distance of 8 in. [200 mm] from the end of the pipe and shall permit the passing for a distance of 8 in. [200 mm] of a ring gauge which has a bore 3 ⁄ 32 in.
13.3 Couplings—Each length of threaded pipe shall be provided with one coupling manufactured in accordance with Specification A865/A865M except that the coupling may be wrought iron (Note 7). Threads shall be cut so as to make a tight joint. Taper-tapped couplings shall be furnished on all weights (masses) ofthreaded pipe NPS 2 1 ⁄ 2 [DN 65] and larger. N OTE 7—For sizes NPS 2 [DN 50] and smaller, it is commercial practice to furnish straight-tapped couplings for standard-weight (mass) (Schedule 40) pipe and taper-tapped couplings for extra-strong (Schedule 80) and double-extra-strong pipe. If taper-tapped couplings are required for sizes NPS 2 [DN 50] and smaller on standard weight (mass) (Schedule 40) pipe, line pipe in accordance with Specification 5L of the American Petroleum Institute should be ordered, thread lengths to be in accordance withASME B1.20.1. Taper-tapped couplings for sizes NPS 2 [DN 50] and smaller in standard weight (mass) may be used on mill-threaded standard weight (mass) type of the same size. 13.4 Protective Coating: 13.4.1 After the pipe has been subjected to the hydrostatic test, and if required by the purchaser, it shall be thoroughly cleaned of all dirt, oil, grease, loose scale, and rust; then dried, and given a protective coating of the kind and in the manner specified by the purchaser. Pipe furnished to Schedule 10 shall be normally shipped with a light coating ofprocessing oil. Ifso specified, the pipe can be given a mill coating or a special coating.ASME SA-135 SA-135M pdf download.