1. Thread connection: The wire should be used to use the automatic silk machine to execute the current national standard GB/T7306;
2. French connection: One installation method: can be measured on -site measurement, drawing a single -line processing diagram of the pipeline, after processing and plastic surgery, and then reaching the on -site installation;
Secondary installation method: You can use non -coating, plastic -lined steel pipes and pipes, flange welding, assemble pipes, and then disassemble for coating, plastic lining processing, and then arrive at the site installation.
3. Gully connection: The finished groove-type coating pipes should be used to give priority; a dedicated groove groove groove should be adopted. Note that the depth of the groove should meet the relevant standards (CJ/T156-2001).
4. Contracting connection: Contracting connection, also known as expansion connection. By changing the sealing connection structure of the pipeline connector, it fundamentally solves the problem of water seepage in the pipeline connection. The expansion connection ensures the seal connection between the pipe connector and the coating steel pipe. The construction operation is simple and convenient, and it is mainly used for the use of line pipelines.
5. Dual -metal welding: Also known as lined head welding connection, special welding pre -production technology is used at both ends of the steel pipe, which combines carbon steel and stainless steel to avoid damage to the coating layer during welding construction. It is currently applying plastic steel. Pipes, especially the best connection solutions for buried plastic steel pipes.
