1.1 This specification covers carbon steel pipe made by the centrifugal casting process intended for use in high-temperature, high-pressure service. Pipe ordered under this specification shall be suitable for fusion welding, bending, and other forming operations.

1.2 Several grades of carbon steels are covered. Their compositions are given in Table 1.

(A) For each reduction of 0.01 % below the specified maximum carbon content, an increase of 0.04 % manganese above the specified maximum will be permitted up to a maximum of 1.10 %.
(B) For each reduction of 0.01 % below the specified maximum carbon content, an increase of 0.04 % manganese above the specified maximum will be permitted to a maximum of 1.40 %.
1.3 Supplementary requirements (S1 to S9) of an optional nature are provided. The supplementary requirements call for additional tests to be made, and when desired shall be so stated in the order, together with the number of such tests required.

1.4 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of each other. Combining values from the two systems may result in nonconformance with the specification.

ASTM Standards

A530/A530M Specification for General Requirements for Specialized Carbon and Alloy Steel Pipe
E94 Guide for Radiographic Examination
E114 Practice for Ultrasonic Pulse-Echo Straight-Beam Contact Testing
E125 Reference Photographs for Magnetic Particle Indications on Ferrous Castings
E142 Method for Controlling Quality of Radiographic Testing
E186 Reference Radiographs for Heavy-Walled (2 to 412 in. (50.8 to 114 mm)) Steel Castings
E381 Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings
E446 Reference Radiographs for Steel Castings Up to 2 in. (50.8 mm) in Thickness