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A / N+T
N+T / Q+T
N+T
Transverse or Longitudinal Tension Test and Flattening Test, Hardness Test, or Bend Test
For material heat treated in a batch-type furnace, tests shall be made on 5% of the pipe from each treated lot. For small lots, at least one pipe shall be tested.
For material heat treated by the continuous process, tests shall be made on a sufficient number of pipe to constitute 5% of the lot, but in no case less than 2 pipe.
For pipe whose diameter exceeds NPS 25 and whose diameter to wall thickness ratio is 7.0 or less shall be subjected to the bend test instead of the flattening test.
Other pipe whose diameter equals or exceeds NPS 10 may be given the bend test in place of the flattening test subject to the approval of the purchaser.
The bend test specimens shall be bent at room temperature through 180 without cracking on the outside of the bent portion.
ASTM A335 Grade P22 Alloy Steel Seamless Pipes delivered direct from our mill is labeled in accordance with automotive standard, ie with both alphanumeric and bar code information. Customer specific data can be added on request.
Tube surface： Tubes are supplied normally without anti-corrosive treatment, but anti-corrosive treatment is available and is carried out on request.
Mill test certificate： MTC is issued in accordance with EN 10204.
Astm A335 standard specication for seamless ferritic alloy-steel pipe for high-temperature service
ASTM A335 standard is issued under the fixed designation A 335/A 335M; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision.
Astm A335 standard specication for seamless ferritic alloy-steel pipe
This specification covers nominal (average) wall seamless alloy-steel pipe intended for high-temperature service (Mote 1). Pipe ordered to this specification shall be suitable for bending, flanging (vanstoning), and similar forming operations, and for fusion welding. Selection will depend upon design, service conditions, mechanical properties, and high-temperature characteristics.
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