74:02:04:48Steel casing

specifications. Steel well casing must be at least schedule 40 in accordance with ASTM Standard A 53-90b, "Standard Specification for Pipe, Steel, Black and Hot-dipped, Zinc-coated, Welded, and Seamless," December 28, 1990, including threads and couplings and plain-end pipe. Examples are in Tables 1 and 2, as follows: Table 1 Nominal Diameter Weight in in inches pounds per foot* 1 1.68 1 1/4 2.28 1 1/2 2.73 2 3.68 2 1/2 5.82 3 7.62 3 1/2 9.20 4 10.89 5 14.81 6 19.18 8 29.35 10 41.85 12 51.15 * Weight includes threads and couplings Table 2 Nominal Diameter Weight in in inches pounds per foot** 1 1.68 1 1/4 2.27 1 1/2 2.72 2 3.65 2 1/2 5.79 3 7.58 3 1/3 9.11 4 10.79 5 14.62 6 18.97 8 28.55 10 40.48 12 49.56 ** Weight is for plain-end pipe The well casing must be certified by the manufacturer to meet ASTM Standard A 53-90b and may not be mill reject. Casing corrected to meet standards is acceptable. If steel well casing five inches in diameter or larger will be pressure-grouted with cement grout from the top of the producing formation up to the bottom of the pitless adapter or unit or to the ground surface, casing with a minimum wall thickness of 0.250 inches must be used.

Source: SL 1975, ch 16, § 1; transferred from § 52:01:02:04, effective July 1, 1979; transferred from § 74:02:02:04, 12 SDR 50, effective September 29, 1985; 13 SDR 129, 13 SDR 141, effective July 1, 1987; 18 SDR 224, effective July 16, 1992.