The fog induction intelligent collision avoidance system in the expressway is an intelligent all-weather unattended system. This system integrates meteorological monitoring, intelligent light indicators, sound and light alarms, traffic information displays and other equipment. It is often used in dangerous road sections (especially It is a fog zone) that can effectively solve the traffic safety problem of dangerous roads.
1.2.1 It is easy to cause rear-end collision in the fog area
Visibility in the fog area is low, the driver can not see the situation in front and around, the judgment and control of the vehicle spacing are not easy to grasp, and many drivers have developed the habit of speeding on the highway, relying solely on the driver's Vision and intuition do not guarantee the safety of driving. If the condition of the road vehicle can be detected automatically, the vehicle can be promptly warned when the vehicle is too close to the front, and the driver is urged to slow down to avoid vehicle rear-end events as much as possible.
1.2.2 Fog Area Content Vehicles Cannot Identify Road Outlines
From the perspective of roads, the visibility of foggy weather is low and the lane line is blurred. Drivers cannot see the road contours, marking lines and various traffic sign signs in front, and they are easy to get out of the road boundary, especially at the detour road section.
1.2.3 Secondary incidents of continuous rear-end collision in fog area
In the event of a traffic accident in the fog area, the vehicle that stopped in the middle of the road may become a dangerous obstacle. If it is not possible to promptly warn the rear vehicles, it may easily cause a rear-end collision with the second vehicle. Therefore, it often encounters a continuous rear-end event in the fog area. .
X-over Coupling or crossover
Coupling
Tubing and casing couplings are the joining of two short length pipe, mainly used for the connection and repair of oil pipe and downhole tools
Tubing and couplings thread types : Non-upset thread(NU), External- upset thread(EU);
Casing and couplings thread types: Long-round thread(LC), Short-round thread(SC), buttress thread(BC)
Grade: K55,J55,N80-1,N80Q,L80-1,P110,etc.
Pup joint
Tubing and casing pup joints are machined according to the latest version of API SPEC 5CT. The steel grade includes J55,K55,N80-1,N80Q,L80-1,P110,etc. There are two types of thread widely used in tubing pup joint namely Non-upset thread(NU), External- upset thread(EU);
Casing and couplings thread types: Long-round thread(LC), Short-round thread(SC), buttress thread(BC).
Our testing and inspection method system is complete, using a whole set of thread instrument to inspect taper, pitch, tooth, height, tooth type,etc. The products have passed the identification of china petroleum pipeline. Quality supervision ,inspection and testing center and gained the unanimous praise from the customers.
Crossover
Crossover coupling any size ,length ,grade and weight is available on customer request.