The connection specifications for galvanized steel pipes depend on the type of connection method, which generally includes flange connection, clamp groove connection, and welding. In actual galvanized steel pipe connections, welding is the most commonly used connection method. Although welding takes a longer time, its quality is the best of the three methods. The clamp groove connection is more convenient. After the two steel pipes have been processed, the grooves are simply aligned, and then the connection point is reinforced with a clamp. The flange connection involves securing the two steel pipes to separate flanges. These flanges are then secured, and the two pipes are passively connected.

The following are specific preventative measures and corresponding measures for galvanized steel pipe connection specifications.

First, Improper Connections
1. Leakage, water leakage, and moisture at the steel pipe ends;
2. Failure to re-galvanize the welds between the galvanized steel pipe and the flange.

Second, Preventive Measures for Improper Connections
1. Select high-quality steel pipes. The connection method should be determined based on the design specifications and the size of the steel pipe fittings. Construction should be carried out strictly, following the standard procedures and processes for each connection method.
2. For pipes with a DN of 100 mm or less, galvanized steel pipes should be connected using threaded connections.
3. Before connecting galvanized steel pipes, manually tighten the pipes to check their tightness, leaving sufficient margin for tightening the fittings.
4. Wind the filler in a clockwise direction, ensuring even winding.
5. For pipes with a DN greater than 100 mm, welded flanges can be used for galvanized steel pipes.
6. After welding the flanges, re-galvanizing is required. If you're unsure about the dimensions of the material for the relevant parts, you can pre-assemble them and then perform a secondary galvanizing process if there are no issues.
7. When connecting two flanges, they should be parallel. Do not force non-parallel flanges together.
8. Gaskets should be placed between the two connecting flanges. Their material and thickness must meet all design and construction specifications. Gaskets should be designed with handles for installation and should not protrude into the flanges. Furthermore, their edges should be as close to the bolt holes as possible. Do not install two gaskets or install them offset.
9. Bolts for flange connections must meet standards for length and diameter. They must be installed in the same direction, meaning the nuts should be on the same side.
10. After installation, galvanized steel pipes should be subjected to a hydrostatic test to check for leaks at all joints. If leaks occur, they should be marked and retested after repairs are complete until the test results are satisfactory.