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9255517888 Line 13:10:24 03-10-2014 15/17 c ' A53/A53M - 12 15. Test Methods 17.3 Weight (Mass) per Unit Area of Coating Test-The 15.1 The test specimens and the tests required by this weight(mass)per unit area of zinc coating shall be determined specification shall conform to those described in the latest issue by stripping tests in accordance with Test Method A90/A90 M. of Test Methods and Definitions A370• 17.4 Test Specimens-Test specimens for determination of 15.2 Each longitudinal tension test specimen shall be taken weight (mass) per unit area of coating shall be cut approxi- from a pipe end and shall not be flattened between the gage mately 4 in. [100 mm] in length. marks. 17.5 Number of Tests-Two test specimens for the determi- 15.3 Test specimens for bend tests and flattening tests shall nation of weight(mass)per unit area of coating shall be taken, be taken from pipe.Test specimens for flattening tests shall be one from each end of one length of galvanized pipe selected at smooth on the ends and free from burrs. random from each Jot of 500 lengths, or fraction thereof, of 15.4 Tests shall be conducted at room temperature, each size. 17.6 Retests-If the weight (mass) per unit area of coating 16. Lengths of any lot does not conform to the requirements specified in 1-11.2,retests of two additional pipes from the same lot shall be 16.1 Unless otherwise specified, pipe lengths shall be in made, each of which shall conform to the specified require- accordance with the following regular practices: ments. 16.1.1 Except as allowed by 16.1.2 and 16.1.4, pipe lighter than extra-strong weight shall be in single-random lengths of 17.7 If pipe ordered under this specification is to he galva- 16 to 22 ft[4.88 to 6.71 m],with not more than 5%of the total nized, the tension, flattening, and bend tests shall be made on number of threaded lengths furnished being jointers (two the base material before galvanizing, if practicable. If speci- pieces coupled together). fied, results of the mechanical tests on the base material shall 16.1.2 For plain-end pipe Iighter than extra-strong weight,it be reported to the purchaser. If it is impracticable to make the shall be permissible for not more than 5 % of the total number mechanical tests on the base material before galvanizing, it of pipe to be in lengths of 12 to 16 ft [3.66 to 4.88 m]. shall be permissible to make such tests on galvanized samples, 16.1.3 Pipe of extra-strong weight or heavier shall be in and any flaking or cracking of the zinc coating shall not be random lengths of 12 to 22 ft [3.66 to 6.71 m], except that it considered cause for rejection. If galvanized pipe is bent or shall be permissible for not more than 5% of the total of pipe otherwise fabricated to a degree that causes the zinc coating to to be in lengths of 6 to 12 ft [1.83 to 3.66 m]. stretch or compress beyond the limit of elasticity, some flaking 16.1.4 For extra-strong weight or lighter pipe ordered in of the coating is acceptable. double-random lengths, the minimum lengths shall be not less 18. Inspection than 22 ft [6.71 m] and the minimum average length for the order shall be not less than 35 ft [10.67 m]. 18.1 The inspector representing the purchaser shall have 16.1.5 For pipe heavier than extra-strong weight ordered in entry, at all times while work on the contract of the purchaser lengths longer than single random, the lengths shall be as is being performed, to all parts of the manufacturer's works agreed upon between the manufacturer and the purchaser. that concern the manufacture of the pipe ordered. The manu- 16.1.6 If pipe is furnished threaded and coupled, the length facturer shall afford the inspector all reasonable facilities to be shall be measured to the outer face of the coupling. satisfied that the pipe is being furnished in accordance with this specification.All tests(except product analysis) and inspection 17. Galvanized Pipe shall be made at the place of manufacture prior- to shipment, 17.1 Galvanized pipe ordered under this specification shall unless otherwise specified, and shall be so conducted as not to be coated with zinc inside and outside by the hot-dip process. interfere unnecessarily with the operation of the works. The zinc used for the coating shall be any grade of zinc conforming to Specification B6. 19. Rejection 17.2 Weight (Mass)per Unit Area of Coating-The weight 19.1 The purchaser is permitted to inspect each length of (mass)per unit area of zinc coating shall be not less than 1.8 pipe received from the manufacturer and,if it does not meet the oz/ft2[0.55 kg/m2] as determined from the average results of requirements of this specification based upon the inspection the two specimens taken for test in the manner prescribed in and test method as outlined in the specification,the length shall 17.5 and not less than 1.6 oz/ft2[0.49 kg/M2] for each of these be rejected and the manufacturer shall be notified. Disposition specimens. The weight (mass) per unit area of coating, ex- of rejected pipe shall be a matter of agreement between the pressed in ounces per square foot[kilograms per square metre] manufacturer and the purchaser, shall be calculated by dividing the total weight(mass)of zinc, 19.2 Pipe found in fabrication or in installation to be inside plus outside,by the total area,inside plus outside,of the unsuitable for the intended use, under the scope and require- surface coated. Each specimen shall have not less than 1.3 ments of this specification, shall be set aside and the manufac- oz/ft2[0.40 kg/m2] of zinc coating on each surface, calculated turer notified. Such pipe shall be subject to mutual investiga- by dividing the total weight(mass)of zinc on the given surface tion as to the nature and severity of the deficiency and the (outside or inside)by the area of the surface coated (outside or forming or installation, or both, conditions involved. Disposi- inside). tion shall be a matter for agreement. Copyright by ASTM Infl(all rights reserved);Tue Nov 6 09:27:19 EST 2012 8 Downloaded/printed by Re e e v e d Ti m e"'M a r. 10. s`2 014u'12; 5 3 p M AN o, 5 3 84'further reproductions authorized.