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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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A lot shall consist of all pipe of the same outside diameter and wall thickness manufactured during an 8-h shift from the same heat of steel, and heat treated under the same conditions of temperature and time in a single charge in a batch type furnace, or heat treated under the same condition in a continuous furnace, and presented for inspection at the same time.

The methods used for cleaning and preparing the surfaces for examination shall not be detrimental to the base metal or the surface nish. Extraneous signals caused by identiable causes such as dings, scratches, dents, straightener marks, etc. It should be recognized that different techniques should be used to detect differently oriented imperfections.

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.

Flattening Test Requirements Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Permissible Variations in Inside Diameter The purchaser shall have the right to perform any of the inspections and tests set forth when such inspections and tests are deemed necessary to ensure that the material to conforms to the prescribed requirements. Packaging, Marking, and Loading Historical Version s – view previous versions of standard.


During the rst step, which is a test for ductility, no cracks or breaks on the inside, outside, or end surfaces, except as provided for in Terms of Sale Privacy Policy.

The pipe may be accepted based on visual examination provided that the imperfection is less than 0. These pipes may be repaired when such repair is permitted by the applicable product specication.

The outside diameter at the point of grinding may be reduced by the amount so removed.

ASTM A999/A999M – 18

Permissible Variations in Wall Thickness 9. NOTE 4—Notwithstanding the absence of a signature or notarization, the organization submitting the Report is responsible for the contents of the report.

The values stated in either inch-pound units or SI units are to be regarded separately as standard. It is the responsibility of the user of this standard to wstm appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

ASTM A for Alloy and Stainless Steel Pipe

For pipe less than NPS 2 and pipe under 3 ft [1 m] in length, the required information may be marked on a tag z999 attached to the bundle or box in which the pipes are shipped.

To be accepted, retested pipe shall meet the test requirement.

In the case of conflict between a requirement of a product specification and a wstm of this specification, the product specification shall prevail. Repair by Welding Cleaning shall be performed in accordance with a written procedure that has been shown to be effective.


A signature or notarization is not required on the certied test report, but the document shall be dated and shall clearly identify the organization submitting the report.

Unless otherwise specied, pipe of NPS 4 and smaller may be weighed a9999 convenient lots; pipe in sizes larger than NPS 4 shall be weighed separately.

Only one retest of any lot will be permitted. 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 chemical composition thus determined, or that determined from a product analysis made by the tubular product manufacturer shall conform to the requirements specied. The examination may not detect short deep defects.

Permissible Variation in Outside Diameter The range of pipe sizes that may be examined by each method shall be subject to the limitations in the scope of the respective practices. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM Headquarters. Within the text, the SI units are shown in brackets. NOTE 2—Thin-wall pipe usually develops signicant ovality out-ofroundness during nal annealing, straightening, or both.

There shall be no variation over the specied inside diameter. Rejected lots may be screened and resubmitted for visual and dimensional examination.