This practice covers the procedure for locating, by the use of a solution of copper sulfate, the thinnest spot in a zinc coating (hot dipped, electroplated, or sprayed) on iron or steel articles that are coated after the shape is produced by casting, drawing, pressing, or other forming methods. Examples are: electrical metallic tubing and rigid conduit pipe, castings and forgings, and structural steel; on special hardware, such as poleline, builder's, and farm implement hardware; bolts, nuts, screws, and other miscellaneous general hardware.
WJE laboratories are accredited by ANAB (ISO/IEC 17025) to perform testing standard ASTM A239 for Locating the Thinnest Spot in a Zinc (Galvanized) Coating on Iron or Steel.
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KeywordsASTM A239 - Bolts - Bolts, Screws, and Studs - Coating - Electrolytic Process - Hot-Dip Coating - Hot-Dip Process - Nuts - Screws - Spray Coating - Zinc Coated - Zinc-Coated Iron Products - Zinc-Coated Steel Products
ICS CODE25.220.40 (Metallic coatings)
UNSPSC CODE1161500 (Screws); 31161600 (Bolts); 31161700 (Nuts)
ASTM A239-14, Standard Practice for Locating the Thinnest Spot in a Zinc (Galvanized) Coating on Iron or Steel Articles, ASTM International, West Conshohocken, PA, 2014, www.astm.org