ASTM A691/A691M-18 pdf download

11-03-2020 comment

ASTM A691/A691M-18 pdf free download. Standard Specification for Carbon and Alloy Steel Pipe, Electric-Fusion-Welded for High-Pressure Service at High Temperatures.
ASTM A691/A691M-18 covers carbon and alloy steel pipe, electric-fusion-welded with filler metal added, fabricated from pressure-vessel-quality plate of several analyses and strength levels and suitable for high-pressure service at high temperatures. Heat treatment may or may not be required to attain the desired mechanical properties or to comply with applicable code requirements. Supplementary requirements are provided for use when additional testing or examination is desired.
The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents: therefore, each system hall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. The inch-pound units shall apply unless the “M designation of this specification is specified in the order.
6. General Requirements
6.1 Material furnished to this specification shall conform to the applicable requirements of the current edition of Specifi cation A530/A530M, unless otherwise provided herein.
7. Chemical Requirements
7. 1 Product Analysis of Plate-The pipe manufacturer shall make an analysis of each mill heat of plate material. The product analysis so determined shall meet the requirements of the plate specification to which the material was ordered
7.2 Product Analysis of Weld-The pipe manufacturer shall make an analysis of finished deposited weld metal from each 200 ft [60 m] or fraction thereof. Analysis shall conform to the welding procedure for deposited weld metal.
7.3 Analysis may be taken from the mechanical test speci mens. The results of the analyses shall be reported to the purchaser.
5. Materials and Manufacture
5. 1 Materials-The steel plate material shall conform to the requirements of the applicable plate specification for the pipe grade ordered as listed in Table I
5.2 Welding.
5. 2. I The joints shall be double-welded full-penetration welds made in accordance with procedures and by welders or welding operators qualified in accordance with the ASME Boiler and Pressure Vessel Code,Section IX.
5.2.2 The welds shall be made either manually or automatically by an electric process involving the deposition of filler metal.

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