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CASING PIPE CASING PIPE <br /> INSIDE DIAMETER WALL THICKNESS <br /> ( INCHES ) ( INCHES ) <br /> 6 - 16 0 . 250 <br /> 18 - 20 0 . 312 <br /> 22 - 24 0 . 375 <br /> 26 - 28 0 . 437 <br /> 30 - 34 0 . 500 <br /> 36 - 38 0 . 562 <br /> 40 - 50 0 . 625 <br /> 52 - 58 0 . 750 <br /> 60 - 78 0 . 813 <br /> 84 - 90 0 . 875 <br /> 96 - 102 0 . 937 <br /> 108 - 114 1 . 000 <br /> 120 1 . 125 <br /> B . Field and shop welds of the casing pipes shall conform to the <br /> American Welding Society Standard Specifications . Field welds <br /> shall be complete penetration , single-vee groove or single-bevel <br /> groove type joints . <br /> 9 . 12 TAPPING SLEEVES AND VALVES <br /> A. Tapping sleeve and valves shall be stainless steel wraparound <br /> type or ductile iron on potable water mains . IRCDUS shall direct <br /> the contractor which type to be used . Tapping sleeve and valves <br /> shall be stainless steel wraparound type for wastewater force <br /> mains and reuse water mains per the Approved Manufacturer's <br /> Product List, <br /> 9 . 13 RESTRAINED JOINTS <br /> See Section 11 . 04 for Restrained Joints <br /> END OF SECTION <br /> 9 - 6 <br />