This standard specifies the product classification, requirements, test methods, inspection rules and markings, packaging, transportation and storage of rectangular block hole graphite heat exchangers. This standard applies to rectangular block-hole graphite heat exchangers (hereinafter referred to as heat exchangers) made of phenolic resin-impregnated impermeable graphite, with a heat exchange area less than 75 m and a design pressure less than 0.3 MPa.
HG/T 3187-2012 Referenced Document
GB/T 9439 Gray cast iron parts*, 2023-09-07 Update