ANSI AWWA C200-17 pdf free download – Steel Water Pipe, 6 In. (150 mm) and Larger
4.5.1 General. If the purchaser’s documents do not specify the type of pipe or steel, the manufacturer shall select the type of pipe and steel from this stan- dard to meet the design requirements of the purchaser’s documents. Pipe shall be fabricated from plate, sheet, or coil from Table 1. Te steel shall be fully killed and shall conform to fne-grain practice.
4.5.2 Charpy impact testing. Charpy impact testing shall be utilized to eval- uate steel used to fabricate pipe that will be restrained in its application. Restrained pipe with a minimum service temperature below 30°F (–1°C) should be evaluated by other methods, such as ASME Boiler and Pressure Vessel Code (BPVC) Section VIII, Division 1, UG-20(f). Steel for pipe in excess of 2.0-in. (50-mm) thick shall be Charpy tested. Steel for pipe 0.500 in. (13 mm) or thinner does not require Charpy testing. Other pipe thicknesses shall be evaluated using Figure 1. Plot the minimum service temperature and the steel thickness. When a minimum service temperature is not provided by the purchaser, 32°F (–0°C) shall be used for the evaluation. Materi- als that comply with Sec. 4.5.1 are Group 1. Group 1 materials that plot below the Group 1 line require Charpy testing. All other materials are Group 2. Group 2 mate- rials that plot below the Group 2 line require Charpy testing. Materials that plot on or above the applicable line do not require Charpy testing. When Charpy testing is required, Charpy V-notch (CVN) specimens shall be prepared and test results interpreted in accordance with ASTM A370. CVN shall be heat-lot tested; specimens shall be taken in the transverse direction at 30°F (–1°C) with a minimum average full size criteria of 25 ft · lbf (33.9 N · m). Heat-lot testing for plate is defned in ASTM A673. Heat-lot testing for coils is defned as two coils per heat, with test coupons being taken from the outer wrap only. When the evaluation of the base metal as shown above has determined that Charpy testing is required, the applicable welding procedures shall be qualifed for notch toughness to meet the same requirements as the base metal.
4.5.3 Tickness of pipe wall. Plate, sheet, and coil for the manufacture of pipe (Table 1) or ancillary pipe (Sec. 4.10) shall be furnished to the thickness as determined by considering all pertinent performance criteria. Pipe wall thick- ness shall be indicated to the nearest 0.001 in. (0.0254 mm). Sec. 4.9.1 provides for standard manufacturing tolerances. For additional tolerance requirements, the purchaser shall indicate numerical tolerances limitations to the nearest 0.001 in. (0.0254 mm). For purchaser-specifed materials described as minimum wall thick- ness without further clarifcation of tolerance by the purchaser, the manufacturing tolerances in Sec. 4.9.1 shall apply.