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ASTM B 474 Document Information:
Title
Standard Specification for Electric Fusion Welded Nickel and Nickel Alloy Pipe
ASTM International
Publication Date:
Mar 10, 2003
Scope:
This specification covers electric fusion welded pipe suitable for
high-temperature or corrosive
service as listed in Table 1. (Although no restrictions are placed on
the sizes of pipe that may be
furnished under this specification, commercial practice is commonly
limited to sizes not less than
8 in. (203 mm) nominal diameter.)
Five classes of pipe are covered as follows:
Class 1 - Pipe shall be double welded by processes employing filler
metal in all passes and shall
be completely radiographed.
Class 2 - Pipe shall be double welded by processes employing filler
metal in all passes. No
radiography is required.
Class 3 - Pipe shall be single welded by processes employing filler
metal in all passes and shall
be completely radiographed.
Class 4 - Same as Class 3 except that the weld pass exposed to the
inside pipe surface may be made
without the addition of filler metal.
Class 5 - Pipe shall be double welded by processes employing filler
metal in all passes and shall
be spot radiographed.
The values stated in inch-pound units are to be regarded as the
standard. The values given in
parentheses are for information only.
This standard does not purport to address all of the safety concerns,
if any, associated with its
use. It is the responsibility of the user of this standard to become
familiar with all hazards
including those identified in the appropriate Material Safety Data
Sheet for this product/material
as provided by the manufacturer, to establish appropriate safety and
health practices, and
determine the applicability of regulatory limitations prior to use.
Keywords:
- fusion welded
- high-temperature alloy
- pipe
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