This part of ISO 9330 specifies the technical delivery conditions for submerged arc-welded tubes of circular cross-section, made of unalloyed or alloyed steel with specified low temperature properties. These tubes are intended for pressure purposes in cases when the material is also used as a low temperature piping system.
The requirements of appropriate international application standards and relevant legal regulations shall be taken into account by the user. For pressure-containing equipment International Standard ISO 5730 is available.
For the general technical delivery requirements , see ISO 404.
