ผลิตภัณฑ์โลหะ
เอกสารมาตรฐาน
สหรัฐอเมริกา
AASHTO
M 218-03 (2020)
Steel Sheet, Zinc-Coated (Galvanized), for Corrugated Steel Pipe
2003 (2020)
6
HM42-2022 part 1
This specification covers steel sheet used in the manufacture of corrugated steel pipe (CSP) for storm sewers, culverts, drains, and similar uses. The sheet is zinc-coated (galvanized) by the hotdip process, and is produced in two coating weights, 610 g/m2 and 1220 g/m2. Material for this use is furnished in coils, flat in cut lengths, and corrugated in cut lengths.