Totten Tubes stocks A53 pipe in a broad range of sizes and dimensions to meet your needs. Flatten testing is required for NPS 2 and larger STD and XS A 53 pipe flatten testing is not required for XXS pipe.Ĭontact Totten Tubes for ASTM A 53 Steel Pipe Sending test (cold) is required for STD and XS-NPS 2 and under, and for XXS-NPS 1-1/4 and under. Pressure must be maintained for a minimum of 5 seconds, for all sizes.Įlectric-resistance welded ASTM A53 steel pipe of NPS 8 and larger must be transverse tested.
Minimum hydrostatic test pressure for NPS 3 and under is 2,500 psi minimum test pressure for sizes over NPS 3 is 2,800 psi. Separate hydrostatic inspection test pressures are specified for plain end, threaded, and coupled A53 steel pipe. For A53 pipe NPS2 and larger, outside diameter must not exceed 1% over and 1% under specified diameter.īSee Table X4.1 for minimus elongation values for various size tension specimens and grades Permissible Variations in Outside Diameter: For ASTM A53 steel pipe NPS 1-1/2 and smaller, outside diameter must not exceed 1/64” over and 1/32” under specified diameter.Permissible Variation in Wall Thickness: The minimum wall thickness at any point in a length of A53 steel pipe must not be more than 12.5% less than the specified wall thickness.Test specimens for coating weight testing will be cut in approximately 4” lengths. The weight of this coating must not be less than 1.8 oz./ft 2 (0.55 kg/m 2). Zinc used for galvanized coatings must conform to Specification B6.
If ordered galvanized, A53 seamless pipe must be coated inside and out via the hot-dip process. Open-hearth, electric-furnace or basic-oxygen
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