High Strength Dacromet Hex Bolts are processed by Dacromet, so what are the advantages?

1. Excellent corrosion resistance. In the salt spray test, the UN etched zinc coating will corrode 1 μ m ~ 3 μ m thick rainbow colored film in 10 hours and wear out in 200 hours. The corrosion resistance of Dacromet treated metal surface is about 10 times higher than that of traditional metal surface treatment, and the salt spray test can reach more than 1000 hours. It has high-tech index of sulfur dioxide resistance, showing stronger rust resistance.
2. Excellent heat and corrosion resistance. When the temperature is higher than 70 ℃, the traditional zinc coating will appear tiny cracks, and change color when the temperature is 200 ~ 300 ℃, and the corrosion resistance will be greatly reduced. The curing temperature of Dacromet anti-corrosion film is about 300 ℃, so the appearance of the surface metal film remains unchanged even if it is exposed to high temperature for a long time.

3. Excellent surface high permeability. After Dacromet treatment, the metal parts can also form a film in the tiny gap, and the anti-corrosion coating with good deep permeability. The tubular parts can also be coated evenly inside and outside, and the deep coating ability is much better than that of electro galvanizing.
4. High weatherability.
High strength Dacromet hex bolts have these advantages.

Heavy hex head structural bolt and nut

Heavy hex head structural bolt and nut M12-M36 carbon steel HDG metric heavy hex head structural bolt and nut Standard: DIN933, DIN931, ISO4014, ISO4017, ANSI/ASME B18.2.1, DIN912, ANSI/ASME B18.3, ISO4762 Size: M12-M100,1/2″-4″ Material: Steel, 40Cr, 35CrMo, 42CrMo, 40CrNiMo, SCM435, 4150, 4140, 4130 Grade: 8.8,10.9,12.9,SAE Gr.5,Gr.8 Finish: Plain, Black, Zinc plated, Phosphated, H.D.G., Dacromet, Geomet Package: […]


High Quality Bolts And Nut

High Quality Bolts And Nut Material: 1.Stainless Steel:SUS302,SUS304,SUS316,SUS201,etc 2.Carbon steel:1018,1022 etc 3.Alloy Steel:Titanium Alloy,10B21,435,40Cr etc 4.Aluminum or Aluminum Alloy 5.Brass Hardness Vickers hardness: HV350-450; HV400-550; HV450-700; Rockwell hardness: Grade8.8 HRC22-32; Grade10.9 HRC32-39; Grade12.9 HRC39-44 Surface treatment: Zinc, Nickel, Bronze, Copper, Phosphate, Oxidation black, Passivation, Tin, Dacromet, Gold, Chrome, Sliver, Phosphonrization, Zinc-nickel alloy plated etc. Standard: […]