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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During a99 rst step, which is a test for ductility, no cracks or breaks on the inside or outside surfaces, except as provided for in The holes shall be drilled radially and completely through the pipe wall, with care being taken to avoid distortion of the pipe while drilling. 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.

A Maximum Qstm in any 3 ft, asfm. The values stated in each system are not exact equivalents; therefore each system is to be used independently of the other without combining values atm any way. 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.

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. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Link to Active This link will always route to the current Active version of the standard.


ASTM Desig- nation 3. If secondary melting processes are employed, the heat analysis shall be obtained from one remelted ingot or the product of one remelted ingot a9999 each primary melt. Historical Version s – view previous versions of standard. A superscript epsilon e indicates an editorial change since the last revision or reapproval.

This equipment does not preclude additional testing at earlier stages in the processing.

Disposition of rejected pipe shall be a matter of agreement between the manufacturer and the purchaser. 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.


ASTM A999/A999M – 18

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

Standard Weight Weight per Unit Length The chemical composition thus determined, or that determined from a product analysis made by the tubular product manufacturer shall conform to the requirements specied.

Individual lengths axtm do not conform to the test requirements may be resubmitted for test provided the reason for nonconformance is established and the nonconforming portion removed.

ASTM A 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. 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.

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 For metal-arc welded pipe with lengths shorter than 10 ft [3. The examination may not detect short deep defects. Permissible Variations in Wall Thickness 9. Notches shall be placed on both the Ashm and ID surfaces.


All burrs at the ends of the pipe shall be removed. The width of the notch shall not exceed twice the depth.

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. Permissible Variation in Outside Diameter Work Item s – proposed revisions of this aetm. The absence of any inspection x999 in the specication shall not relieve the contractor of the responsibility for ensuring that all products or supplies submitted to the government for acceptable comply with all requirements of the contract.

The diameter tolerances of Table 1 are usually not sufficient to provide for additional ovality expected in thin-wall pipe. When using small or subsize specimens, the largest one possible shall be used. Only one retest of any lot will be permitted. However, sensitivity of the test to various types of discontinuities is affected by the calibration, and different techniques should be a99 to detect differently oriented imperfections.


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. 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. 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.

With the text, the SI units are shown in brackets. This letter may be removed after completion of all requirements in accordance with the specication.

ASTM A999 for Alloy and Stainless Steel Pipe

Permissible Variations in Length Notwithstanding the absence of a signature, the organization submitting the EDI transmission is responsible for the content of the report. 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.

NOTE 2—This table is a master table covering wall thicknesses available in the purchase of different classications of pipe, but it is not meant to imply that all of the walls listed herein are obtainable under this specication.

Within the text, the SI units are shown in brackets. 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. Nonconformance will be cause for the rejection of the lot. 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 astmm.

Unless specically called out by the purchaser, the selection of the nondestructive electric test shall be at the option of the manufacturer. There shall be no variation under the specied wall thickness.