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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Disposition of such pipe shall be matter for agreement. The chemical composition astn determined, or that determined from a product analysis made by the tubular product manufacturer shall conform to the requirements specied.
ASTM A for Alloy and Stainless Steel Pipe
One hole shall be drilled in the weld, if visible. Historical Version s – view previous versions of standard. Nominal Average Thickness tn in. NOTE 2—This table is a999 master table covering wall w999 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.
Rejected lots may be screened and resubmitted for visual and dimensional examination. Extraneous signals caused by identiable causes such as dings, scratches, dents, straightener marks, etc.
ASTM A999/A999M – 18
Within the text, the SI units are shown in brackets. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. Such requirements to be considered include, but are not limited to, the following: It should be recognized that different techniques should be used to detect differently oriented imperfections.
Combining values from the two systems may result in non-conformance with the standard. Marking shall begin approximately 12 in. Certied Test Report Repair by Welding 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.
The hole diameter shall be no larger than as follows: 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by the responsible technical committee and must be reviewed every ve years and if not revised, either reapproved or withdrawn. 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. 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.
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. 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. Notwithstanding the absence of a signature, the organization submitting the EDI transmission is responsible for the content of the report.
Government where scale-free pipe is required.
Notches shall be placed on both the OD and ID surfaces. The manufacturer may reheat treat the pipe, but not more than twice, except with the approval of the purchaser. When using small or subsize specimens, the largest one possible shall be used.
ASTM A999 for Alloy and Stainless Steel Pipe
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. 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. 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.
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. Upon agreement between purchaser and manufacturer, Practice E shall be employed in addition to one of the full periphery tests. 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.
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 examination may not detect short deep defects.
Test data from a minimum of three test lots, as dened by the specication, each from a different heat, shall be furnished.
In the case of conflict between a requirement of a product specification and a requirement of this specification, the product specification shall prevail.
These requirements shall take precedence if there is a conict between these requirements and the product specication. ASTM Desig- nation 3. The tolerances on adtm diameter include ovality except as provided for in An explanation astmm specication requirements to be completed is provided in Nondestructive Test Requirements With the text, the SI units are shown in brackets. This equipment does not preclude additional testing at earlier stages in the processing.
A lot shall be all material poured from one heat. 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 area producing the signal may be reexamined. W999 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. This letter may be removed after a9999 of all requirements in accordance with the specication. 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.
The sensitivity of this test decreases with thickness over 0. Standard Weight Weight per Unit Length 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.
During the rst step, which is a test for ductility, no cracks or breaks on the inside or outside surfaces, except as provided for in These pipes may be repaired when such repair is permitted by the applicable product specication.