The reckoning diagram of coke yield for domestic coal resource is obtained on basis of first-hand date of thermal test and analysis fo r20 coke ovens by almost ten years' work.

Some suggest iterating over the process itself as if constantly revisiting the same state diagram will eventually yield more information.

Then, a logic computational diagram is constructed for calculating diametral growth by assuming fatigue cyclic softening, namely yield strength reduction as tubing fatigues.