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 strength, high wear level of resistance and long life.
We have several rows chains to your requirements.
Twin monitor is a professional duplex chain manufacturer of roller chain. There are two main types: Stainless steel chain and carbon steel chain.
We have established a nationwide sales net work and the products have been sold to the countries and regions in Europe and America, Central and South Africa along with South-east Asia, which are very popular among customers.