Couplings are used to connect two joints of TUBING COUPLING or CASING pipe together.
Couplings are short length of heavy wall pipe with the same threads on each end.
The steel coupling is mainly used to connect oil pipes in pil drilling.
This product can be used to connect the shafts of units that are
manufactured separately.
It can fit the misalignment of the shafts or introduce mechanical flexibility.
The pipe coupling is capable of reducing the transmission of shock losds from one shaft to another.
It can also introduce protecyion against overloads.
The steel coupling can be used to alter vibration characteristics of
rotating units.
Pipe coupling is also used to connect drilling par and driven part.
Casing Coupling Solution,Api 5Ct Coupling,Casing Coupling,Tubing Coupling ESASTSUN OILFIELD EQUIPMENT MANUFACTURING (CAMBODIA) CO., LTD , https://www.eastsuncambodia.com
In 2010, with the overall momentum of the national economy and the implementation and implementation of the national logistics industry restructuring and revitalization plan, China's logistics and transportation industry has achieved rapid development, but the problem of low logistics transportation efficiency has become increasingly prominent. 
The level of logistics efficiency mainly depends on two factors. One is to improve the level of management and operation, increase the frequency of delivery, and reduce no-load. Taking the domestic middle-distance inter-city logistics and transportation industry as an example, commercial vehicle companies with international backgrounds have continuously joined the market competition, and the overall operational efficiency has been greatly improved by improving the efficiency of logistics tools. The Jiangling Motors Co., Ltd., which is known for its fuel-efficient and durable properties, will soon launch its highly efficient logistics-wide card, the Jiangling Kaiwei series, which represents this trend.
As an international commercial vehicle company, Jiangling Motors is known for its high quality, fuel economy and durability, and has firmly established itself as a leader in high-end light trucks. However, in the past, JMC trucks were mainly confined to light trucks within 6m of the vehicle. The length of the vehicle was close to 8.5 meters. Products with a car body length of nearly 6.5 meters were still seen on the market for the first time. The car is Jiangling Kaiwei's Jiangling Kaiwei sword for four years. The chain logistics field is no stranger to Jiangling Motors. Jiangling Kaiwei has locked inter-city logistics vehicles between 300-500km, covering 4,500 and 4,750 wheelbases, matching two high-quality engines jointly developed by domestic well-known manufacturers Chaochai/Yuchai, and 4D series adopting Isuzu 4HK1 technology. Match Bosch electronically controlled high pressure common rail system, power, noise, fuel consumption is generally 6% lower than similar models; 4E series uses internationally mature electronically controlled monomer pump technology, cost-effective. The highest safety speed 115KM / H, the largest 33 cubic meters of body space, the use of Jiangling F Series heavy-duty chassis, making Jiangling Kaiwei deserved to become the middle distance of the domestic inter-city high-speed heavy-duty highway transport heavy load, fuel-efficient and durable experts. While high-efficiency logistics has become an urgent demand for the industry, it can be said that Jiangling Motors has selected the best time for the introduction of high-efficiency logistics transportation tools.
Mr. Lin, who was testing the drive and returned to Kaiwei, frankly stated that the financial crisis and rising oil prices had brought great impact on their operating costs. If the car could not be loaded at high speed, fuel economy and durability would really not be considered. Kaiwei's 6.5-meter length of the car body deeply attracted him. The chassis was big enough and thick enough to pull at least 12 tons. With the Isuzu-powered engine, it was definitely fuel efficient and durable. The after-sales service was also very good. It was said to be The best of domestic commercial vehicles. In the end, Mr. Lin said that he still looked at the Jiangling brand. He had previously opened Jiangling Kaiyun and was very satisfied. He later wanted to change the cart. Unfortunately, Jiangling did not have to buy other brands. Now that Jiangling has launched a 6.5-meter car, Kai Wei just happens to want to change a similar car.
In a group of customers consulting Kaiwei, they interviewed Mr. Lu, sales manager of Changzhou Jiangling 4S shop. The land manager, who was so busy, said: The most regrettable thing is that Kaiwei is a fixed-rate pre-sale. After selling out the factory, it is not shipped. Now it can only sell cars with a publicity list. When it comes to why customers buy Kaiwei, they take pride in the use of silk. Manager Lu replied: Because it is the Jiangling brand, the background of cooperation with Isuzu and Ford, the harsh 2.5 million kilometers quality verification, high-speed heavy-duty, fuel-efficient and durable product features. Good pre-sales and after-sales service will be the most effective core competitiveness of Kaiwei.
EASTSUN manufactures TUBING coupling and casing tubing coupling strictly comply with API 5CT latest standard.
Size
Grade
NUE
EUE
Special clearance
2 3/8"
J55/K55/M80/L80/P110
Yes
Yes
Yes
2 7/8"
J55/K55/M80/L80/P110
Yes
Yes
Yes
3 1/2"
J55/K55/M80/L80/P110
Yes
Yes
Yes
4"
J55/K55/M80/L80/P110
Yes
Yes
4 1/2"
J55/K55/M80/L80/P110
Yes
Yes