STEEL CASING REQUIREMENTS

Subpart 1. General. Steel casing used in the permanent construction of a well or boring must be new casing produced to: A. ASTM Standard A53/A53M-04a; B. ASTM Standard A589-96 (2001), Types I, II, and III; or C. API Standard 5L-04. Steel casing must have the minimum weights and thicknesses specified in the table in subpart 2 subject to the tolerances in the specifications in this subpart. Subp. 2. Steel casing pipe weight and dimensions. Size in Inches Plain End Wgt. Lbs. Per Ft. Thrds. & Cplgs.* Thrds. R&D Cplgs. Thickness in Inches S 1 1.68 1.68 1.70 .133 c 1-1/4 2.27 2.28 2.30 .140 h 1-1/2 2.72 2.73 2.75 .145 e 2 3.65 3.68 3.75 .154 d 2-1/2 5.79 5.82 5.90 .203 u 3 7.58 7.62 7.70 .216 l 3-1/2 9.11 9.20 9.25 .226 e 4 10.79 10.89 11.00 .237 5 14.62 14.81 15.00 .258 4 6 18.97 19.18 19.45 .280 0 8 28.55 29.35 .322 10 40.48 41.85 .365 S 12 49.56 51.15 .375 t 14 54.57 57.00 .375 a 16 62.58 65.30 .375 n 18 70.59 73.00 .375 d 20 78.60 81.00 .375 a 22 86.61 .375 r 24 94.62 .375 d 26 102.63 .375 30 118.65 .375 W 32 126.66 .375 g 34 134.67 .375 t 36 142.68 .375 * Nominal weight based on length of 20 feet including coupling. Steel casing up to ten inches in diameter must be Schedule 40. Larger diameter casing must be standard weight. Diameter-Inches Couplings External Internal Thrds. per Inch Minimum External Diameter Inches Minimum Length Inches 1.315 1.049 11-1/2 1.576 2-5/8 1.660 1.380 11-1/2 1.900 2-3/4 1.900 1.610 11-1/2 2.200 2-3/4 2.375 2.067 11-1/2 2.750 2-7/8 2.875 2.469 8 3.250 3-15/16 3.500 3.068 8 4.000 4-1/16 4.000 3.548 8 4.625 4-3/16 4.500 4.026 8 5.200 4-5/16 5.563 5.047 8 6.296 4-1/2 6.625 6.065 8 7.390 4-11/16 8.625 7.981 8 9.625 5-1/16 10.750 10.020 8 11.750 5-9/16 12.750 12.000 8 14.000 5-15/16 14.000 13.250 8 15.000 6-3/8 16.000 15.250 8 17.000 6-3/4 18.000 17.250 8 19.000 7-1/8 20.000 19.250 8 21.000 7-5/8 22.000 21.250 24.000 23.250 26.000 25.250 30.000 29.250 32.000 31.250 34.000 33.250 36.000 35.250