Steel sheet pile is a type of steel with a lock. The cross-sections include linear, Z-shaped, U-shaped, H-shaped, hat-shaped, etc.
The so-called galvanizing refers to covering the surface of the sheet pile with a layer of zinc metal to protect the steel plate from oxidative corrosion. During the production process, steel sheet piles are immersed in molten zinc liquid, causing a chemical reaction between the surface and the zinc to form a strong zinc layer.
The manufacture of galvanized steel sheet piles is a precision process designed to produce a building material that is both durable and economical. The following are the detailed steps for manufacturing galvanized steel sheet piles:
Cold-formed: Steel billets are heated and rolled by a rolling mill. The cross-section is Z-shaped, U-shaped, linear, H-shaped or other shapes, and can be interconnected through locks or car joints on both sides for building foundation sections. .
Before galvanizing, the steel sheet piles must be cleaned and pickled to remove grease, oxide scale and other impurities on the surface of the carbon steel sheet.The galvanizing process can be divided into three types: hot dip galvanizing (hot dip galvanizing), cold galvanizing (electro galvanizing) and mechanical galvanizing. Hot dip galvanizing is used to manufacture galvanized steel sheet piles.Hot-dip galvanizing: The cleaned steel plate is immersed in the molten zinc liquid through the wetting effect of the plating flux, so that the steel and the molten zinc react to form an alloyed film.
1. What are galvanized steel sheet piles?
Galvanized steel sheet piles have good corrosion resistance. The zinc coating can form a dense oxide film, which effectively isolates the steel sheet pile from contact with the external environment, thus preventing the sheet pile from being oxidized and corroded. Whether in wet or dry environments, galvanized steel sheet piles can maintain good surface condition for a long time and extend their service life.The so-called galvanizing refers to covering the surface of the sheet pile with a layer of zinc metal to protect the steel plate from oxidative corrosion. During the production process, steel sheet piles are immersed in molten zinc liquid, causing a chemical reaction between the surface and the zinc to form a strong zinc layer.
2. Manufacturing process of galvanized steel sheet piles
The manufacture of galvanized steel sheet piles is a precision process designed to produce a building material that is both durable and economical. The following are the detailed steps for manufacturing galvanized steel sheet piles:
(1)Select raw materials
The most common raw material for sheet piles is steel, generally carbon steel and alloy steel.(2) Preliminary processing
Hot rolling: The steel strip is continuously rolled and deformed to form a section steel for building foundations with a Z-shaped, U-shaped, hat-shaped or other shapes, and can be interconnected through locks or bends on both sides.Cold-formed: Steel billets are heated and rolled by a rolling mill. The cross-section is Z-shaped, U-shaped, linear, H-shaped or other shapes, and can be interconnected through locks or car joints on both sides for building foundation sections. .
(3) Straightening
Use a straightening machine or press to apply pressure to the steel sheet piles to ensure a straight shape and ensure the performance and construction quality of subsequent steel sheet piles.(4) Make a locking system
The lock is the interface part of the mutual connection between steel sheet piles. It facilitates the connection of steel sheet piles to form a tight wall.(5) Galvanizing treatment
Zinc is an active amphoteric metal that is easily oxidized. After oxidation, it can form a dense protective layer. Therefore, zinc is often used as a surface coating on metals, alloys or other materials, referred to as zinc plating. It is a coating that can play a role in beauty, rust prevention, etc. Surface treatment technology.Before galvanizing, the steel sheet piles must be cleaned and pickled to remove grease, oxide scale and other impurities on the surface of the carbon steel sheet.The galvanizing process can be divided into three types: hot dip galvanizing (hot dip galvanizing), cold galvanizing (electro galvanizing) and mechanical galvanizing. Hot dip galvanizing is used to manufacture galvanized steel sheet piles.Hot-dip galvanizing: The cleaned steel plate is immersed in the molten zinc liquid through the wetting effect of the plating flux, so that the steel and the molten zinc react to form an alloyed film.
(6)Passivation
Passivation refers to the process in which metal is oxidized by strong oxidants or electrochemical methods to turn the surface into an inactive state, that is, passivation. It is a method to transform the metal surface into a state that is not easily oxidized and slow down the corrosion rate of the metal. Passivation after galvanizing can further improve the corrosion resistance of steel sheet piles.(7) Quality inspection
Conduct inspections on steel sheet piles, such as dimensional inspection, surface inspection and performance testing, to meet the actual needs of construction projects.(8)Finishing work
Just like manufacturing steel pipe piles, after the product is completed, the steel sheet piles need to be cut, trimmed, marked and other processes, and then they can be packaged and shipped to the designated location.3.Common sizes and specifications for galvanized steel sheet piling
| Specification Item | Description |
|---|---|
| Section Type | Common types include U-shaped, Z-shaped, and straight web (also known as wales or laminations). |
| Height | The length of the sheet pile from the top to the bottom, typically ranging from a few meters to over 20 meters depending on the application. |
| Width | The width of the flange or the overall width of the sheet pile, which can vary based on the section type. |
| Thickness | The thickness of the steel sheet pile, measured in millimeters, which determines its load-bearing capacity and resistance to bending. |
| Interlock System | The type of interlock mechanism, such as a tongue and groove or a more complex design that ensures a tight seal between piles. |
| Tolerances | The allowable variations in dimensions to ensure proper fit and function during installation. |
| Weight | The approximate weight of each sheet pile unit, which is crucial for handling and transportation considerations. |
| Corrosion Protection | The level of galvanization coating, often expressed in grams per square meter (g/m²), indicating the thickness of the zinc layer for corrosion protection. |
| Standard Lengths | Common lengths available from manufacturers, which can be cut to specific project requirements on-site. |
| Grade | The grade of steel used, which can indicate the yield strength and other mechanical properties of the sheet piling. |
