What are the connection methods for coated steel pipes?
Release time:
2020-12-18
The socket-type connection, also known as the flared connection, fundamentally solves the problem of water leakage in coated steel pipe fittings by modifying the sealing structure of the pipe fittings. The flared connection ensures a tight seal between the pipe fitting and the coated steel pipe, and the installation process is simple and convenient. It is primarily used for conduit installations.
Socket-type connection:
Socket-type connections, also known as flared connections, fundamentally solve the issue by modifying the sealing connection structure of pipe fittings. Plastic-coated steel pipe The issue of water leakage in pipe fittings. The flared connection ensures a tight seal between the pipe fitting and the plastic-coated steel pipe, and the installation process is simple and convenient. It is primarily used for conduit piping systems.
Threaded connection:
During the wire-drawing process for steel wires, it is essential to strictly ensure that parameters such as screw length, tooth profile, and tooth height comply with the relevant standard process requirements. Before using threaded connections, an appropriate sealant should be applied to the external threads or pipe fittings to provide sealing and protection.
Groove connection:
Groove-type connections are widely used in plastic-coated pipelines. They offer flexible connections and simple operation. Before coating the main pipe, grooves are pressed into the main pipe according to customer requirements, after which the main pipe is coated with plastic. The groove-pressure standards shall comply with CECS151:2003, the "Technical Specification for Groove-Connection Pipeline Engineering," issued by the China Engineering Construction Standardization Association.
Flange connection:
Flange connections offer good strength and sealing performance, have a simple structure, low cost, and can be repeatedly disassembled. Before coating the main pipe with plastic, first weld the flange to the main pipe, then coat the flanged pipe with plastic.
Bimetallic welding:
Also known as butt-welded connections, this method employs a specialized pre-welding process at both ends of the steel pipe, effectively joining carbon steel and stainless steel. This approach prevents damage to the coating during the steel pipe welding process, making it currently the optimal connection solution for plastic-coated steel pipes—especially those buried underground.
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