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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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 Variation in Weight for Seamless Pipe 8.

Except as otherwise specied in the contract or purchase order, the manufacturer may use his own or any other suitable sstm for the performance of the inspection and test requirements unless disapproved by the purchaser at the time the order is placed. In the case of conflict between a requirement of the product specification or a requirement of this specification and a more stringent requirement of the purchase order, the purchase order shall prevail.

Extraneous signals caused by identiable causes such as dings, scratches, dents, straightener marks, etc. Permissible Variations in Length Surface imperfections such as handling marks, straightening marks, light mandrel and die marks, shallow pits, and scale pattern will not be considered injurious if the imperfections are removable within the tolerances specied for wall thickness or 0.

The purchaser must certify that all requirements of the specication have been completed before the removal of the letter that is, X, Y, or Z. The internal surface of hot nished ferritic steel pipe shall be pickled or blast cleaned to a free of scale condition equivalent to the CSa2 visual standard in SSPC-SP6.

Permissible Variation in Outside Diameter Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Nominal Average Thickness tn in. The area producing the signal may be reexamined. Packaging, Marking, and Loading Marking shall begin approximately 12 in. To be accepted, retested pipe shall meet the test requirement. Lot Size Pieces per Lot 2 to 8 9 to 90 91 to to to to to to 10 10 to 35 Sample Size Entire Lot 18 12 19 21 27 35 38 46 In all cases, the acceptance number is zero and the rejection number is one.


Historical Version s – view previous versions of standard.

ASTM A999/A999M – 18

All burrs at the ends of the pipe shall be removed. The test pressure or stress shall be determined by the following equation: If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. An explanation of specication requirements to be completed is provided in Combining values from the two systems may result in non-conformance with the standard.

These pipes may be repaired when such repair is permitted by the applicable product specication. Title of Specication ASTM Designation3 are not exact equivalents; therefore each system must be used independently of the other.

The length of pipe that cannot be tested shall be determined by the manufacturer and, when specied in the purchase order, reported to the purchaser.

ASTM A for Alloy and Stainless Steel Pipe

Within the text, the SI units are shown in brackets. NOTE 4—Notwithstanding the absence of a signature or notarization, the organization submitting the Report is responsible for the contents of the report. With the text, the SI units are shown in brackets. The dimensions of these standards should not be construed as the minimum size imperfection detectable by such equipment. This standard does not purport to address all of the safety concerns, if any, associated with its use.

The hydrostatic test may be performed prior to cutting to asgm length, or prior to upsetting, swaging, expanding, bending, or other forming operations. These requirements shall take precedence if there is a conict between these requirements and the product specication. Disposition of such pipe shall be matter for agreement. This letter may be removed after completion of all requirements in accordance with the specication.


This standard is subject to revision astn any time by the responsible technical committee and must be reviewed every ve years and if not revised, either reapproved or withdrawn.

In the case of conflict between a requirement of a product specification and a requirement of this specification, the product specification shall prevail. There shall be no variation over the specied inside diameter.

ASTM A999 for Alloy and Stainless Steel Pipe

In the case of conflict between a requirement of the product specification or a requirement of this specification and a more stringent requirement of the purchase order, the purchase order shall prevail.

On specied walls up to 0. Work Item s – proposed revisions of this standard. Notches shall be placed on both the OD and ID surfaces. Flattening Test Requirements 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 inch-pound units apply unless the “M” designation SI of the product specification is specified in the order. A number in parentheses indicates the year of last reapproval. Upon agreement between purchaser and manufacturer, Practice E shall be employed in addition to one of the full periphery tests.

For pipe less than NPS 2 and pipe under 3 ft [1 m] in length, the s999 information may be marked on a tag securely attached to the bundle or box in which the pipes are shipped. To be accepted, a repaired pipe must pass the same nondestructive test by which it was rejected, and it must meet the minimum wall thickness requirements of the applicable product specication.

The values stated in each system are not exact equivalents; therefore each system is to be used independently of the other without combining values in any way. The chemical composition thus determined, or that determined from a product analysis made by the tubular product manufacturer shall conform to the requirements specied.