API Spec 5LCP-2006 pdf download.Specification for Coiled Line Pipe.
6.2.4 Flaring Tests—All Grades All grades of coiled line pipe shall be subjected to a flaring test as specified in 8.3.3. The acceptable criterion is no cracking in the weld seam region or base metal up to a minimum ID expansion of ID f (defined in 8.3.3). 6.2.5 Fracture Toughness Tests Fracture toughness testing for Charpy v-notch energy is required where possible, considering the limitations imposed by diam- eter and thickness of the pipe ordered. Transverse specimens shall be used when possible to machine full size, 2 / 3 size, or 1 / 2 size specimens utilizing either tapered-end specimens, non-flattened specimens, or flattened specimens. Otherwise, longitudi- nal specimens shall be substituted and shall be limited to 1 / 2 size specimens. The test specimens shall be oriented circumferen- tially from a location 90º from the weld with the axis of the notch oriented through the pipe wall thickness. All tests shall be conducted at 32ºF (0ºC). The acceptance shall be 20 ft-lb (27 joules) average, 15 ft-lb (20 joules) minimum for full size trans- verse specimens and 30 ft-lb (41 joules) average, 20 ft-lb (27 joules) minimum for full size longitudinal specimens. By agree- ment, and when specified on the purchase order, alternative tests may be used when it is not possible to machine specimens meeting the above restrictions. 6.2.6 Metallographic Examination For all pipe, compliance with the requirement in 5.5 that the entire heat affected zone be heat treated shall be demonstrated by metallographic examination of a weld cross section. Such examinations shall be performed on both ends of each milled length.
7.5 LENGTH The length of pipe(s) shall be as specified on the purchase order. Agreement on overage and underage shall be agreed upon between the manufacturer and the purchaser, and specified on the purchase order. The accuracy of length measuring devices shall be ±1%. 7.6 PIPE-TO-PIPE WELDS By written agreement, and when specified on the purchase order, two or more lengths of pipe may be welded together by the man- ufacturer. See Appendix B. Weld surface hardness values shall not exceed those of Table 2. 7.7 WORKMANSHIP AND DEFECTS Imperfections of the types described in 7.7.1 – 7.7.10 that exceed the specified criteria shall be considered defects. The manufac- turer shall take all reasonable precautions to minimize recurring imperfections, damage, and defects. 7.7.1 Dents The pipe shall contain no dents greater than the specified wall thickness, measured at the gap between the lowest point in the dent and a prolongation of the original contour of the pipe. The length of the dent in any direction shall not exceed one half of the diameter of the pipe. All cold-formed dents deeper than 1 / 8 -in. (3.2-mm) with a sharp bottom gouge shall be considered a defect. The gouge may be removed by grinding. 7.7.2 Offset Skelp Edges The radial offset of the skelp edges of the longitudinal weld shall not exceed 0.020 in. (0.5 mm) or 0.1t, whichever is greater. 7.7.3 Height of Outside Flash The outside flash shall be trimmed to an essentially flush condition. 7.7.4 Height of Inside Flash Where, by agreement between the purchaser and the manufacturer, the inside flash is not to be removed, the following require- ments apply: For pipe sizes less than 3 1 / 2 , the inside flash shall not extend above the prolongation of the original inside surface of the pipe more than 0.090 in. (2.3 mm), or the specified wall thickness, t, whichever is less.
7.7.5 Cracks and Leaks All cracks and leaks shall be considered defects. 7.7.6 Laminations and Inclusions Any lamination or inclusion extending into the face or bevel of the pipe and having a transverse dimension exceeding 1 / 4 in. (6.4 mm) is considered a defect. Pipe containing such defects shall be cut back until no lamination or inclusion is greater than 1 / 4 in. (6.4 mm). Any lamination in the body of the pipe greater than or equal to 3 / 8 in. (9.5 mm) in the minor dimension is considered a defect. Disposition of such defects shall be in accordance with 8.6.9, item a or b. No specific inspection for laminations or inclusions by the manufacturer is required unless the purchaser specifies special nondestructive inspection on the purchase order. 7.7.7 Arc Burns Arc burns are localized points of surface melting caused by arcing between electrode or ground and pipe surface, and shall be considered defects. Disposition of pipe containing arc burns shall be in accordance with 8.6.9 except that removal of defects by grinding shall be sub- ject to the following additional conditioning: