Standard Specification for Steel Sheet, Metallic Coated and Polymer Precoated for Corrugated Steel Pipe (Includes all amendments and changes 12/19/2023).
STANDARD published on 1.11.2023
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Designation standards: ASTM A742/A742M-23a
Publication date standards: 1.11.2023
The number of pages: 4
Approximate weight : 12 g (0.03 lbs)
Country: American technical standard
Category: Technical standards ASTM
This specification covers polymer precoated steel sheet for corrugated steel pipe (CSP) which is coated after metallic coating on continuous lines by coil coating (roller coating or laminating) processes. The metallic coating shall either be zinc, aluminum-zinc alloy, or zinc-aluminum-mischmetal alloy. Sheet for this purpose shall be furnished flat in coils, flat in cut lengths, or corrugated in cut lengths, all being protected by a mill-applied polymer coating on both sides. The polymer coating shall be classified by grade corresponding to the thickness on each side. Requirements for the cleaning process of the steel sheet and for the polymer coating are given. The test methods for the following polymer coating properties are detailed: adhesion, impact, thickness, holidays, abrasion resistance, imperviousness, freeze-thaw resistance, weatherability, and resistance to microbial attack.
Keywords:
aluminum-mischmetal alloy, aluminum-mischmetal alloy coated, coatings-55 % aluminum-zinc alloy, coatings-metallic, coatings-polymer, coatings-zinc, coatings zinc 5 %, corrugated steel pipe, pipe-corrugated steel, polymer coatings, steel sheet-55 % aluminum-zinc alloy coated, steel sheet-metalic coated, steel sheet-polymer coated, steel sheet-zinc coated, steel sheet-zinc 5 % ,, ICS Number Code 77.140.50 (Flat steel products and semi-products)