ASTM A999 PDF

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ASTM A / AM – 16 Standard Specification for General Requirements for Alloy and Stainless Steel Pipe. This specification(Footnote 2). This standard is issued under the fixed designation A/AM; the number immediately specification, shall apply to the ASTM product specifications. Tolerances acc. ASTM A (welded and seamless pipes). OD mm. Tol. OD. ( mm). t/m. + > t/m. + > t/ m.

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This equipment does not preclude additional testing at earlier stages in the processing. For welded pipe, the test pressure shall be held for a time sufficient to permit the entire length of the welded seam to be inspected.

The test system settings may be changed, or the transducer scoil s or sensor s adjusted, and the unit restandardized, but all pipe tested since the last acceptable standardization must be retested for acceptance.

ASTM A for Alloy and Stainless Steel Pipe

This procedure shall be available for audit. The width of the notch shall not exceed twice the depth.

A number in parentheses indicates the year of last reapproval. Marking shall begin approximately 12 in.

Individual lengths that do not conform to the test requirements may be resubmitted for test provided the reason for nonconformance is established and the nonconforming portion removed. There shall be no variation over the specied inside diameter.

Test data from a minimum of three test lots, as dened by the specication, each from a zstm heat, shall be furnished. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.

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All defective items shall be replaced with acceptable items prior to lot acceptance. Nominal Average Thickness tn in.

ASTM A999/A999M – 18

The holes shall be drilled radially and completely through the pipe wall, with care being taken to avoid distortion of the pipe while drilling. The outside diameter at the point of grinding may be reduced by the amount so removed.

The manufacturer may reheat treat the pipe, but not more than twice, except with the approval of the purchaser. Only one retest of any lot will be permitted. Repair by Welding ASTM Desig- nation 3. For pipe less than NPS 2 and pipe under 3 ft [1 m] in length, the required information may be marked on a tag securely attached to the bundle or box in which the pipes are shipped. Rejected lots may be screened and resubmitted for visual and dimensional examination.

Current News Archive Standard Technically. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. In the case of conict between a requirement of the product specication or a requirement of this specication and a more stringent requirement of the purchase order, the purchase order shall prevail.

Link to Active This link will always route to the current Active version of the standard. Nondestructive Test Requirements During the second step, which is a test for soundness, the attening shall be continued until the specimen breaks or the opposite walls of the pipe meet.

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Defects shall be thoroughly chipped or ground out before welding and each repaired length shall be reheat treated or stress relieved as required by the applicable specication. Permissible Variations in Inside Diameter Notches shall be placed on both the OD and ID surfaces. Packaging, Marking, and Loading The manufacturer shall afford the inspector all reasonable facilities to satisfy him that the material is being furnished in accordance with this specication.

On specied walls up to 0. The bottom of imperfections shall be visible and the prole shall be rounded and faired-in. The inch-pound units apply unless the “M” designation SI of the product specification is specified in the order. This specification Footnote 2 covers a group of general requirements that, unless otherwise specified in an individual specification, shall apply to the ASTM product specifications noted below.

Standard Weight Weight per Unit Length These pipes may be repaired when such repair is permitted by the applicable product specication. Nonconformance will be cause for the rejection of the lot.

Astmm length of pipe that cannot be tested shall be determined by the manufacturer and, when specied in the purchase order, reported to the purchaser. Each length of repaired pipe shall be nondestructively tested as required by the product specication.

With the text, the SI units are shown in brackets.