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Galvanized Iron (GI) pipes are steel pipes that have been coated with zinc to make them more resistant to rust and corrosion:
Material: GI pipes are made from mild steel strips or low carbon steel coils.
Coating: The pipes are coated with zinc through a process called galvanization.
Uses: GI pipes are used for a variety of purposes, including water distribution, drainage systems, construction projects, and irrigation systems.
Features: GI pipes are durable, resistant to dust and abrasion, and easy to weld. They are also strong and can withstand high pressure and external impacts.
Classification: GI pipes are classified as light (Class A), medium (Class B), or heavy (Class C). Light pipes are yellow, medium pipes are blue, and heavy pipes are red.
Lifespan: GI pipes can last up to 50 years in rural areas, but their lifespan decreases by 50% in urban polluted regions.
Before construction, you should be familiar with the construction period drawings, relevant technical requirements and acceptance standards, construction methods and technical essentials for various pipeline installations, prepare detailed construction plans, and guide construction; establish a construction quality assurance system to control the quality of each process during the construction process , so as to ensure that the pipeline engineering construction meets the requirements of design and acceptance specifications;
Pipeline cutting: Grinding wheel cutting machine should be used for cutting galvanized steel pipes. The fracture of the pipes should be flat and free of defects such as burrs, and the foundation should be polished with angular sand to remove oxides.Before the pipeline is prefabricated, the flatness of the nozzle needs to be checked, and the flatness must meet the requirements of the specification.
Casings should be added when pipes pass through walls or floors, and the gap between pipes and casings should be filled with flexible non-combustible materials.
Fire protection system pipes less than DN100 use galvanized steel pipes and screw connections. When the pipeline is installed, the thread should be smooth, complete and free of segments. The filler of the thread mouth should be made of tetrafluoroethylene raw material tape or white lacquered hemp silk. The pipe should be installed tightly at one time. Do not enter pipes.
2) The threaded connection of the pipeline is processed by an electric threading machine. The processing of the thread should be correct, clear, complete and smooth, without burrs or broken wires, and the total length of missing wires should not exceed 10% of the thread length.
3) When threaded connection, the filler is made of white thick lacquered hemp silk or raw material tape, tightened once, and shall not be screwed back, leaving 2~3 turns of thread after tightening.
4) After the pipes are connected, clean up the stuffing squeezed out of the thread, and the stuffing should not squeeze into the lumen, so as not to block the pipeline, and at the same time, carry out anti-corrosion treatment on the exposed threads.
| Size | weight | materials |
| 1 1/2 | 8kls | galvanize iron steel |
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