JIS G 3454:2017 specifies the carbon steel pipes (hereafter referred to as pipes) used for pressure service at temperatures up to about 350 °C. It is not applicable to pipes for high pressure service. The pipes covered by this Standard are those of outside diameters 10.5 mm (nominal diameter 6A or 1/8B) to 660.4 mm (nominal diameter 650A or 26B).