BIS Certification For Transmission Steel Roller Chains and Chain Wheels for Oil Field Applications BIS Certification for Transmission Steel Roller Chains and Chain Wheels for Oil Field. Standards for Steel Chains The Bureau of Indian Standards (BIS) has issued IS 14696:2000 for transmission roller steel chains and chain wheels for oil field applications. This specification helps to evaluate and qualify, which is why they are so important in drilling and extraction processes! With adherence to IS 14696:2000, manufacturers ensure that their products endure harsh oil field operable conditions while maintaining desired performance. Henceforth, the makers of transmission roller chains and chain wheels for oil field use will have to get BIS certification to sell these products in the Indian market. The certification has been put in place to ensure that the goods sold in India are of standard quality and this is spelled out using the ISI mark and products graded under this mark are considered safe and reliable to use.