That is standard chain for B series with duplex.
The majoy material of Standard Chain are SUS304, SUS310, SUS316. They have the features of high power, high wear duplex chain china resistance and long life.
We have several rows chains for your needs.
Twin track is a professional producer of roller chain. There are two main categories: Stainless steel chain and carbon steel chain.
We have established a nationwide product sales net function and the products have been sold to the countries and regions in European countries and America, Central and South Africa and also South-east Asia, which are very popular among customers.