Short-pitch roller chain for transmission, double-pitch roller chain for transmission, sleeve chain for transmission, bent plate roller chain for heavy-duty transmission, toothed chain for transmission, stepless speed change chain, long-pitch conveyor chain , Short-pitch roller conveyor chain, double-pitch roller conveyor chain, double-speed conveyor chain, plate chain, etc. 
The rest of the products are as follows:
1. Stainless steel chain: The material of the parts is stainless steel. This kind of chain is suitable for use in the food industry and in the occasions where it is easily eroded by chemicals and medicines, and can also be used in high and low temperature occasions.
2. Nickel-plated chain, galvanized chain, chrome-plated chain: all chains composed of carbon steel materials can be surface-treated, and the surface of the parts is treated with nickel-plated, zinc-plated or chrome-plated, which can be used in outdoor rainwater erosion and other occasions, but cannot prevent Concentrated chemical liquid corrosion.
3. Self-lubricating chain: some parts are made of a sintered metal impregnated with lubricating oil. This kind of chain has wear-resistant chain plate conveyor, excellent corrosion resistance, no maintenance (maintenance-free), and long service life. Features. It is widely used in occasions with high stress, wear-resistant requirements, and incapable of frequent maintenance, such as automated production lines in the food industry, high-end bicycle racing, and low-maintenance high-precision transmission machinery.
4. O-ring chain: There are O-rings for sealing between the inner and outer chain plates of the roller chain to prevent dust from entering and grease from flowing out of the hinge. The chain is heavily pre-lubricated. Because the chain has super strong parts and reliable lubrication, it can be used in open transmission such as motorcycles.
5. Rubber chain: This type of chain is based on A and B series chains with a U-shaped attachment plate added to the outer link, and rubber (such as natural rubber NR, silicone rubber SI, etc.) is attached to the attachment plate to increase the wear capacity. , reduce noise and increase shock resistance. for conveying.
6. Tine chain: This chain is widely used in the wood industry, such as wood feeding and output, cutting, conveyor table transportation, etc.
7. Agricultural machinery chain: Agricultural machinery chain is suitable for field operation machinery such as walking tractors, threshers, combine harvesters, etc. This chain requires low cost but can withstand shock and wear, in addition, the chain should be greased or self-lubricating.
8. High-strength chain: It is a special roller chain. By improving the shape of the chain plate, thickening the chain plate, fine-blanking the chain plate hole, and strengthening the pin shaft heat treatment, the tensile strength can be increased by 15~30%, and it has good impact. performance, fatigue performance.
9. Side bending chain: This chain has larger hinge clearance and chain plate clearance, so it has greater flexibility and can be used for bending transmission and conveying.
10. Escalator chain: used for escalators and automatic pedestrian passages. Because the escalator has a long working time, high safety requirements and stable operation. Therefore, it is required that the step chain must reach the specified minimum ultimate tensile load, the total length deviation of the two paired chains, and the step distance deviation.
11. Motorcycle chain: Defined by the use of the chain, divided from the structure of the chain, there are two types of roller chain and sleeve chain, divided from the part used on the motorcycle, it has two types of use inside the engine and outside the engine. Most of the chains used in the engine are of the sleeve chain structure, and the chains used outside the engine are the transmission chains used to drive the rear wheels, and most of them use roller chains. Special care should be taken to ensure fatigue properties of such chains.
12. Agricultural clamping conveyor chain: suitable for walking wheat and rice harvesters, stationary motorized rice and wheat threshers, and semi-feeding combine harvesters.
13. Hollow pin shaft chain: for conveying, single pitch, double pitch and long pitch are available. Attachments or crossbars can be inserted into any link of the chain without removing the chain.
14. Timing chain: used for the transmission between the engine crankshaft and the camshaft. Since there are strict requirements for the coordination between the engine piston stroke and the exhaust time, the chain used for this purpose is called a timing chain. Both roller chains and toothed chains can be used as timing chains. Timing chains are mainly used for the transmission of engines (diesel or gasoline engines) of automobiles, motorcycles and ships. In order to reduce the weight of the engine, the installation gap between the chain and the engine is very small, and some even have no tensioning device. Therefore, in addition to the high precision requirements for the timing chain, the requirements for wear resistance are also quite high.
As a common transmission force device, the chain reduces friction through the "chain" design of the hyperbolic arc. It is used in places where the power is relatively large and the running speed is relatively slow, which has obvious advantages over belt transmission, such as tanks. , pneumatic compressor, etc., but the transmission speed cannot be too fast, because the flexibility of the chain is not as good as that of the belt transmission.