This specification covers double submerged-arc welded, black, plain end steel pipes for use in the conveyance of fluids under pressure. The pipes shall be capable of being welded in the field. Skelp widths for helical seam pipe shall be neither less than 0.8 nor more than 3.0 times the pipe's specified outside diameter. Skelp end welds shall not be permitted in finished pipe, except for helical seam pipe having its skelp end welds manufactured by double submerged-arc welding. For such pipes, skelp ends shall have been properly prepared for welding. The specimens shall undergo the following tests: tension test, guided bend test, Charpy V-notch test, and hydrostatic test. After hydrostatic test, nondestructive examinations by ultrasonic inspection shall be done.
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1.1 This specification covers double submerged-arc welded, black, plain end steel pipe for use in the conveyance of fluids under pressure. Pipe in sizes NPS 16 and larger, as given in ASME B36.10, are included; pipe having other dimensions, in this size range, are permitted, provided such pipe complies with all other requirements of this specification.
1.2 It is intended that pipe be capable of being welded in the field when welding procedures in accordance with the requirements of the applicable pipeline construction code are used.
1.3 The values stated in either inch-pound units or in SI units are to be regarded separately as standard. The values in each system are not exact equivalents, therefore, each system is to be used independently of the other, without combining values in any way.
1.4 The following precautionary statement pertains to the test method portion, Section 14 of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A450/A450M Specification for General Requirements for Carbon and Low Alloy Steel Tubes
A530/A530M Specification for General Requirements for Specialized Carbon and Alloy Steel Pipe
A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
A941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys
ASME Boiler and Pressure Vessel Code, Section IX, Welding and Brazing Qualifications
black steel pipe; double submerged-arc welded; line pipe; Double submerged-arc welded pipe--specifications; Black steel pipe--specifications; Helical-seam double submerged-arc welded pipe; Longitudinally welded pipe; Welded steel pipe--specifications;
ICS Number Code 77.140.75 (Steel pipes and tubes for specific use); 23.040.10 (Iron and steel pipes)
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