1. Scope
This Japanese Industrial Standard specifies the carbon steel tubes, alloy steel tubes, stainless steel tubes and nickel-chromium-iron alloy tubes. Hereinafter referred to as the
"tubes", for heating the process fluids in the fired heaters mainly used in petroleum refinery, petrochemical industry, etc.
Remarks
When previously agreed upon by the manufacturer, the purchaser may designate part or all of the supplementary quality requirements Z2, Z3, Z4 and Z6 specified in Appendix,
in addition to the items specified in this text.
Appendix Z 2 Elevated temperature yield point or proof stress
Appendix Z 3 Ultrasonic examination
Appendix Z 4 Eddy current examination
Appendix Z 6 Corrosion test
2. The units and numerical values given in { }in this Standard are based on the International System of Units (SI) and are appended for informative reference.
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