This standard specifies plain-end welded steel pipes (hereinafter referred to as pipes) sized after welding, manufactured from the types shown in Table 2, with precise dimensional tolerances, and of dimensions selected from ISO 4200 shown in Table 6. ) stipulates technical delivery conditions.
JIS G 7218:2003 history
2003JIS G 7218:2003 Plain end as-welded and sized precision steel tubes -- Technical conditions for delivery (ISO specifications)