Astm B739. Standard specifications for welding of pipes made of Nickel, iron, chromium, silicon alloy.
Astm B739 specification covers the standard for welded pipe N08330 and N08332 intended for use in conditions of high temperature and corrosive environment. Tubes manufactured from flat-rolled alloy by an automatic welding without adding filler.
According to Astm B739 tubes to use are subjected to cold treatment after welding and prior to final heat treatment. All material properties such as yield strength, tensile strength, elongation, hardness and other requirements such as grain size and annealing temperature standardized.
The values specified Astm B739 in units of inch-pound are to be regarded as standard. Metric values are mathematical conversions to SI units that are provided for information only and are not considered standard.
Standard Astm B739 not reglamentary security measures concerning the operation of the finished products. The user of this standard should be familiar with all hazards including those listed in the material safety data sheet (MSDS) for welding pipes.
The heat exchange circuits, thermostats, heating system.
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