Tianjin OuNaiDa Transmissions Machinery Co., Itd is a manufacturer specializing in the production, processing and sales company of mechanical transmission parts,
Our main products are gear,gear rack,sprockets,roller chain,timing pulley etc 1> Lowest price based on large scale production. 2>SGS IOS certified high quality product. 3>Considerate sevice.Customers have any quations,our engineer can answer.
OND Roller Chain Productive Process:
1. Heat Treatment.: In heat treatment equipment, used in a variety of auxiliary medium at high temperature, improve the organizational structure of the parts, improve various items performance 2. Carburization: Place in heat treatment equipment parts were heated to a certain temperature and heat preservation time, and then pass into the carbon, medium carbon into the workpiece surface, chain in order to improve the hardness and wear resistance. 3 Quenching. Parts :after heated to a certain temperature in heat treatment equipment, heat preservation time, and then according to the requirements in different medium cooling, thus improve parts hardness. 4 Tempering:After quenching parts at a certain temperature in the heat treatment equipment for heating, cooling and heat preservation time after.Parts after tempering can reduce the quenching hardness, eliminate the quenching stress, improve the toughness. 5.Black Oxide/Bluing:Using organic polymer polymerization principle, the use of heat treatment process in the process of tempering heat black film. 6.Shot Blasting 7. Phosphating. 8. nickel Plating. 9.Zinc Plating 10. Apply Oil: After the chain oil can prevent rusting chain, and more luster.
Packaging & Shipping
Chain+Plastic Bag+ Carton+Wooden case( If you have other requirements, we can customized according to customer requirements packaging. )
1.Most of the standard ones are in stock which we can send in 3-10 days after inspection and package. 2. Customized products delivery time should be determined according to the number.
We can accept a variety of payment. 1) TT, 30% deposit , 70% before shippment. 2) L/C at sight. (high bank charge, not suggest , but acceptable ) 3) 100% Western Union in advance. (specially for air shipment or small amoun)
We are sure any of your inquiry will get our prompt reply ! Please feel free to contact with us !