ANG Auto Ltd. Offers Heat Treated Air Brake Kit. ANG Auto Ltd. Has achieved ISO 9001 certifications. ANG Auto Ltd. Supplies heavy vehicle spare parts and automotive trailer parts. Heat Treated Air Brake Kit is made from OEM Standard Steel which ensures more life of the components and higher durability. Heat Treated Air Brake Kit is provided with corrosion resident coating which helps in preventing flaking of coating resulting in larger components life & prevents rust formation.