galvanized pipe

Description :

Galvanized pipe, also known as galvanized steel pipe, is a pipe material that has been galvanized on the surface of the steel pipe. Its core function is to enhance the corrosion resistance of the steel pipe and extend its service life. Hot dip galvanized pipe | After acid pickling to remove oxide skin, the steel pipe is immersed in molten zinc solution at around 450 ℃, and the zinc iron reaction generates a dense alloy composite coating | The coating is uniform, has strong adhesion, excellent corrosion resistance, and has a service life of 10-30 years | The country advocates the use of|

|Cold galvanized pipe (electroplated zinc) | Zinc layer is deposited on the surface of the steel pipe by electrolysis | The galvanizing amount is only 10-50g/㎡, and the zinc layer is thin and easy to peel off, with poor corrosion resistance | Prohibited for use in water and gas pipes, only for use in non critical low-voltage scenarios|

Advantages:

1. Retain the high-strength advantage of steel pipes, which can withstand certain pressure and external forces

2. The zinc layer provides dual protection through physical isolation and electrochemical sacrificial anode, and its corrosion resistance is 3-5 times higher than that of ordinary steel pipes

3. The surface is smooth and beautiful, which can reduce fluid transport resistance and does not require additional painting for rust prevention

4. Zinc is recyclable and cost-effective compared to stainless steel pipes

Disadvantages:

1. The price is 20-30% higher than ordinary black pipes

2. During welding, the zinc layer is prone to volatilization and produces harmful gases, and welding can damage the zinc layer, requiring subsequent application of rust prevention coating

3. After the zinc layer is damaged, the substrate is prone to rusting, and long-term use of water supply pipes can easily produce rust and contaminate water quality

application field

Hot dip galvanized pipes are currently widely used in:

1. Construction projects: fire sprinkler pipes, scaffolding, steel structure supports, fences, greenhouse construction

2. Municipal infrastructure: highway guardrails, streetlight poles, power cable protection pipes, photovoltaic brackets

3. Industrial field: low-pressure oil and gas transmission pipelines, coal mine ventilation support pipes, chemical equipment supporting pipes, and exploration machinery components

4. Agriculture: Irrigation pipeline network for farmland, greenhouse skeleton

AfterSalesService :