This International Standard specifies the requirements for steel sheet used in the manufacture of corrugated steel pipe for storm sewers, culverts, drains, and similar uses. It covers sheet which is metallic coated by the continuous hot-dip process and is furnished in coils, flat cut lengths, and corrugated cut lengths. Several metallic-coated materials are covered which relies on users to determine which product best serves their needs. Four different metallic coatings are included: — zinc coated; — zinc-5 % aluminium-mischmetal alloy coated; — 55 % aluminum-zinc alloy coated; — Al-Si alloy coated.