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Credibility ,The selection standard of materials used for non-standard flange refers to metal materials with fire resistance not lower than 1587 ℃. It should be adopted according to the
product design requirements and should comply with the current national
material standards. Non-standard flanges are subjected to various physical and
mechanical movements in the high temperature environment, which may cause
refractory materials to be damaged by melting, softening, cracking and abrasion.
The non-standard flange materials mainly
have the following strict requirements:
Large-diameter flanges should have good
working performance, meet the requirements of pipe joint quality, and comply
with the relevant product protection, safety protection regulations and
technical specifications. Connect the bulk density. The ratio of the
non-standard flange product nozzle to its total volume, the true density refers
to the various pore volume openings that do not include other tube ends. The
connection tightness is closed with one end of the nozzle, and the other end is
connected to the outside, which can be safe. The ability of a gas to pass
through a nozzle at normal temperature and pressure is usually measured by the
gas permeability coefficient.
Raw materials for non-standard flange
large-diameter flanges are made of refractory materials, high-temperature
resistant materials, good sealing performance, and some ordinary steel
materials and heat-resistant metals. Reasonable material selection plays an
important role in ensuring the quality, safe and economic operation of
large-diameter flange products and increasing their service life.
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