Specification: M20-M48
Material: 45#, 40Cr, 35 Crmo, 42 Crmo
Grade: 10.9, 12.9, 14.9
Surface Treatment: Black Oxide, Zinc plated, HDG, Galvanized, Plain (Oiled), Dacromet.
Application: Caterpillar; Creeper truck; Crawler
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