WELCOME TO Bar International! Why should the piston rings be most frequently changed engine parts? Why let faulty rings cause poor compression, severe blow-by, and excessive smoking from the tailpipe? When you have one answer to all these headaches. Bar International Piston Rings. We are leading manufacturers, wholesale suppliers and exporters of Piston Rings from India. Our piston rings, made of high quality Grey Cast Iron & Spheroidal Grey Iron Castings with an ideal chemical composition certainly last a prolonged working life. Fine grain castings provide high tension even at elevated temperature of high speed engines. Hard chromium, electro-deposited on the periphery of rings helps achieving high abrasive wear. These oil control rings are chromium plated on their fully radiused edges to provide wear resistant wiping surface free of sharp corners or cutting edges which may cause bore wear. Each iron ring is Parco lubricated hence producing a lightly etched surface to provide oil retaining phosphate coating. This type of surface minimizes scuffing, assists running -in and affords some protection during stoppage. Each ring is made to go through some of the most stringent quality tests by modern techniques to ensure material and dimensional accuracy for the best results of high compression and less oil usage. About Us Whose is the India's leading name as manufacturers and exporters of internationally acclaimed quality of piston rings? Bar International is the export arm of a group of six dynamic companies that have over the past four decades garnered a wealth of experience and expertise in the manufacture of quality automotive parts especially piston rings. It is now an ISO 9002 certified company. Bar International has over a period of time carved out a solid reputation in the automotive industry. Founded entirely ideology of strict quality control, effective marketing, and pioneering breakthroughs in import substitution. From a company that was set up to meet the growing trend of import substitution, Bar International today not only manufactures but also exports piston rings, spring loaded and Steel Laminated Oil Control rings, Cast Iron Piston Rings both plain & chrome plated, brake shoes, Brake Linings, Disc Pads and Gaskets. With a trained and dedicated workforce of over 300, a turnover that exceeds 3 million US dollars, Bar International now offers a wide array of automotive products for leading OEMs. A diverse range of products is now available for the discerning manufacturers and users through our dealers' network of 1400 establishments spread over 300 locations. What makes Bar International, the best? In our opinion, perfect material composition control gives the product a longer life span and reduced ring failure thus resulting in lower running costs. We employ innovative techniques like: * Use of special alloys like molybdenum to improve tension and increase the fatigue resistance of the material. * Hard chrome plating vastly improves the wear resistance as it provides low friction and good thermal conductivity. This also gives extremely high hardness and a high melting point. * Manganese phosphating aids surface lubrication, events surface scuffing and resists rusting during storage. Tin/Copper/Cadmium plating for the rings is also adopted. All to bring out the best to our valued customers. Not surprisingly a number of quality checks are carried out and each ring is individually quality marked. Our stringent quality tests include: * Plating thickness test * Material Hardness checks * 100% Light Tight Inspection * Tangential Tension Check * Surface Roughness test * Flatness/Parallelism Test * Key Stone Angle * 100% Axial Width/Radial Thickness * 100% Closed Gap Check Manufacturing Process Bar International has always been a niche market player that keeps its core practices of quality assurance instilled firmly to the roots. When others gave up the basic older methodologies against the modern automated ones, we incorporated the best of both worlds in our practices and ruled the order of the day through excellence in quality. For our world class products we select only the best pig iron and the best cast iron dies. Firstly the pig iron is heated to about 1500- 1800 degrees centigrade for about an hour inside an inoculation furnace along with some other chemicals until it achieves a level where it is readily accepted by the dies. The material is then poured into stacks of sand pillars prepared from moldings, created using the die. It is then allowed to cool in air or oven, overnight depending upon the casting. Thereafter, runners & risers are removed to make individual cast rings, machinable. The rings are ground to a specific accuracy on axial width and sorted out for blowholes. Thereafter, they are turned for OD and ID on lathes. The free gap is created with / without heat treatment. Following which, gap sizing, chamfering, OD, grooving, slotting, I.D. grooving scrapper, beveling, keystone making or one side tapering is done, in accordance with the drawing or samples as per the specifications on compression rings, oil control rings. After this hard chrome plating is carried out for hours, depending on the specified plating thickness. This drastically improves wear resistance and provides low friction and good thermal conductivity. It also gives extremely high hardness and a high melting point.