Standard Specification for
Steel Sheet, Aluminum-Coated (Type 2), for Corrugated Steel Pipe
AASHTO Designation: M 274-87 (2004)
SCOPE
1.1.This specification covers steel sheet used in the fabrication of corrugated steel pipe (CSP) used for drainage pipe and underdrains.
The steel sheet is coated with commercially pure aluminum (referred to as Type 2) on continuous lines by the hot-dip process, and is produced in one
coating mass only. The material is furnished flat in coils and cut lengths, and corrugated in cut lengths.
2.REFERENCED DOCUMENTS
2.1. AASHTO Standard:
- T 213M/T 213, Mass [Weight] of Coating on Aluminum-Coated Iron or Steel Articles
2.2. ASTM Standards:
- A 463M, Specification for Steel Sheet, Aluminum-Coated by the Hot-Dip Process, General
Requirements (Metric)
- A 754, Coating Thickness by X-Ray Fluorescence
- E 376, Practice for Measuring Coating Thickness by Magnetic-Field or Eddy-Current
(Electromagnetic) Test Methods
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