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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Sampling inspection, as part of the manufacturing operations, is an acceptable practice to ascertain conformance to requirements, however, this does not authorize submission of known defective material, either indicated or 7 Nonconformance will be cause for the rejection of the lot. All burrs at the ends of the pipe shall be removed.

Marking shall begin approximately 12 in.

One hole shall be drilled in the weld, if visible. 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.

Within the text, the SI units are shown in brackets. Packaging, Marking, and Loading ASTM Desig- nation 3. ASTM D e1. The test pressure or stress shall be determined by the following equation: 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.

This standard is subject to revision at any time by the responsible technical committee and must be reviewed every ve years and if not revised, either reapproved or withdrawn. Permissible Variations in Wall Thickness 9. Current edition approved March 10, 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. Unless otherwise specied, pipe of NPS 4 and smaller may be weighed in convenient lots; pipe in sizes larger than NPS 4 shall be weighed separately.


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

ASTM A for Alloy and Stainless Steel Pipe

Permissible Variation in Outside 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. 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.

NOTE 4—Notwithstanding the absence of a signature or notarization, the organization submitting the Report is responsible for the contents of the report. Historical Version s – view previous versions of standard. Permissible Variation in Weight for Seamless Pipe 8.

ASTM A999 for Alloy and Stainless Steel Pipe

Repair by Welding The tolerances on outside diameter include ovality except as provided for in 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. A lot shall be all material poured from one heat. When using small or subsize specimens, the largest one possible shall be used. 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 An explanation of specication requirements to be completed is provided in For metal-arc welded pipe with lengths shorter than 10 ft [3.


There shall be no variation under the specied wall thickness. Only one retest of any lot will be permitted.

All required tests and inspection shall be made at the place of manufacture prior to shipment, unless otherwise specied, and shall be conducted so as not to interfere unnecessarily with operation of the works. These requirements shall take precedence 9a99 there is a conict between these requirements and the product specication.

ASTM A999/A999M – 18

Permissible Variations in Inside Diameter The minimum z999 thickness on inspection is shown in Table X1. The diameter tolerances of Table 1 are usually not sufficient to provide for additional ovality expected in thin-wall pipe. The width of the notch shall not exceed twice the depth.

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