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,Api 5Ct Pup Joint Henan Dongfanglong Machine Manufacture Co., Ltd , https://www.dfloilm.com
The AV5271 ATM analyzer has E1 interface, E3 interface, STM-1 electrical interface and STM-1 optical interface. It has comprehensive test functions and is very suitable for testing and maintenance of ATM networks and equipment in China.
The AV5271 adopts a modular structure with industrial computer control, and has functions such as service priority control, multiple service distribution models, service shaping, service flow statistics, GCRA testing, O.191 QoS testing, network impairment, and UNI/NNI protocol decoding. . With a variety of filters, the maximum capture depth is 1 million cells, which can test 2046 sub-service streams at the same time. The physical layer interface is a dual-channel configuration with comprehensive error and alarm testing capabilities.
The successful development of this instrument provides a powerful guarantee for the development of ATM network equipment and the normal operation of ATM network in China.
The first self-developed ATM test instrument passed the test
China's first self-developed ATM test instrument - AV5271 ATM analyzer, has passed the test in 41.