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about GRWA
about GRWA
about GRWA
Qingdao Greatwall Automotive Parts Co.Ltd
Our company specialized in produce, develop, sell the exhaust system, cooling system, body parts and so on, also do our best to combine various kinds of resources to supply our customers the best service.We have our own factories to develop different car accessories, our factories cover more than 1000 mu with more than 200 workers and dozens of R&D personnel, each year dozens of new products enter the market. Our Product Exhaust catback, exhaust headers, exhaust downpipes, exhaust mufflers, exhaust tip, radiator, intercooler...
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29 2020-05
Does the exhaust tip affect the car?

Many car owners like to modify the car, and the most modified one is the exhaust tip, because this place is the easiest to modify and the cost is very low, which is very suitable for people who are not willing to spend a lot of money to modify. However, some people will worry, will it affect the car after installing this?

26 2020-05
Composition of exhaust system

Composition of exhaust system An exhaust system refers to a system that collects and discharges exhaust gas, including an exhaust manifold, an exhaust pipe, a muffler pipe, a tail pipe, and a resonator. This article contains the following:n Exhaust manifoldn Catalytic convertern silencer 1.Exhaust m

22 2020-05
Common faults of exhaust muffler

The principle of a car silencer is that its exhaust pipe is composed of two pipes of different lengths, which are separated before they meet. Because the difference between the lengths of the two pipes is equal to half of the wavelength of the sound waves emitted by the car, the two columns of sound waves cancel each other and interfere with each other to reduce the sound intensity when superimposed during superposition, so that the sound is reduced, so as to achieve the effect of sound attenuation.

20 2020-05
Can the exhaust valve clearance be adjusted just after the intake valve opens?

When the engine is operating, the valve will expand as the temperature rises. If there is no gap between the valve and its transmission parts in the cold state or the gap is too small, then in the hot state, the heated expansion of the valve and its transmission parts will inevitably cause the valve to close tightly, causing the engine to leak during the compression stroke and the power stroke Gas, so that the power drops, even in severe cases, it is not easy to start. In order to eliminate this phenomenon, when the engine is coldly assembled, a certain gap is left in the valve and its transmission mechanism to compensate for the expansion of the valve after heating. This gap is called the valve gap.

01 2020-04
What is exhaust system?

What is exhaust system This article contains the following:Application of Resistant Muffler SystemCharacteristics of Resistant Muffler Application of Resistant Muffler SystemThere are many kinds of exhaust muffler system designed and manufactured by micro perforated acoustic structure, the main typ

31 2020-03
What is exhaust muffler?

What is exhaust mufflerExhaust Muffler refers to the airflow pipe with noise propagation at the same time, which can be attenuated or reflected back by using the pipe with sound-absorbing lining and the elbow or the pipe with sudden change of cross section area and other discontinuous acoustic imped

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