1. Hard Hat: A protective headgear designed to shield the wearer's head from potential external impacts. It typically consists of a shell, a suspension system, a front brim, and adjustable straps for a secure fit. 2. Helmet Components: The structure of a helmet includes various parts such as the cap, brim, top ribs, ventilation holes, attachment points, lining adjustment holes, and side panels that help in distributing impact force evenly. 3. Visor: The front section of the helmet's shell, often used to protect the eyes from sunlight, debris, or other hazards. 4. Brim: The edge of the helmet that extends beyond the main body, providing additional protection and improving visibility. 5. Top Bar: A reinforcing element located at the top of the helmet to enhance structural integrity and distribute weight more effectively. 6. Ventilation Holes: Small openings on the helmet shell that allow air to circulate, keeping the user cool and comfortable during prolonged use. 7. Socket: A structural component that connects the helmet shell to the inner lining and other accessories, ensuring a secure and stable fit. 8. Connection Hole: A hole that allows for the attachment of the inner lining to the outer shell, facilitating proper alignment and support. 9. Inner Lining: The internal structure of the helmet, including elements like the forehead band, safety strap, support straps, sweat-absorbent pad, padding, and tethering system. 10. Headband: A circular band that wraps around the head, securing the helmet in place and ensuring a snug fit. 11. Forehead Strap: The part of the helmet that directly contacts the forehead, offering comfort and stability. 12. Cushioning Strap: An additional layer of fabric or foam placed above the headband to provide extra cushioning and reduce pressure points. 13. Tether (Strap): A connecting strap that links the forehead strap, safety band, inner lining, and helmet shell, ensuring all components remain securely fastened. 14. Sweat-Absorbent Pad: A soft, absorbent material wrapped around the headband to wick away moisture and keep the user dry. 15. Pads: Soft, padded inserts placed between the headband and the helmet shell to provide added comfort and shock absorption. 16. Rear Hoop: An adjustable ring located at the back of the helmet, allowing users to customize the fit for better stability. 17. Liner Connector: A mechanism that joins the inner lining to the helmet shell, ensuring a secure and stable connection. 18. Frequency Band: A part located at the lower collar, often used for communication devices or other attachments. 19. Locking Clamp: A device used to adjust the length of the side straps, helping to achieve a personalized and secure fit. 20. Plug-In Connection: A method of attaching the helmet shell to the inner lining using a plug-and-socket design for easy assembly and disassembly. 21. Tethered Bolting: A system where the helmet shell is connected to the inner lining using a tethering rope, offering both flexibility and security. 22. Riveting: A permanent method of joining the helmet shell and inner lining using rivets, ensuring a strong and durable connection.

China Labor Insurance Network

Square Ductile Gratings

Square Ductile Gratings are a type of grating system that is commonly used in various industries and applications. These gratings are designed to provide a strong and durable solution for platforms, walkways, and other areas where heavy loads and frequent foot traffic are expected. In this article, we will explore the characteristics, features, and benefits of square ductile gratings in detail.

Square ductile gratings are typically made from ductile iron, a type of cast iron that has been treated with a small amount of magnesium to enhance its strength and toughness. This material is known for its high resistance to impact, fatigue, and corrosion, making it ideal for outdoor and industrial environments. The ductile iron construction also allows for a higher load-bearing capacity compared to other materials, such as steel or aluminum.

One of the key features of square ductile gratings is their square-shaped openings. These openings are designed to allow for the efficient drainage of water, debris, and other materials, reducing the risk of slips and falls. The square shape also provides a stable and secure surface for walking or standing, even in wet or slippery conditions. Additionally, the openings allow for ample airflow, which can be beneficial in applications where ventilation is required.

Square ductile gratings are available in a variety of sizes and load ratings to suit different requirements. The load rating refers to the maximum weight that the grating can safely support without deformation or failure. This makes it crucial to choose the appropriate load rating based on the expected load and usage of the grating. Higher load ratings are typically achieved by increasing the thickness and depth of the grating bars.

In addition to their strength and durability, square ductile gratings also offer several other benefits. One of the main advantages is their ease of installation. These gratings are often supplied in pre-fabricated panels, which can be quickly and easily installed using standard fixing method.


Another benefit of square ductile gratings is their low maintenance requirements. The ductile iron material is resistant to rust and corrosion, reducing the need for regular painting or coating. Additionally, the square-shaped openings allow for easy cleaning, as debris and dirt can be easily swept or hosed off the surface. This can save both time and money on maintenance and cleaning efforts.

Square ductile gratings are also highly versatile and can be used in a wide range of applications. They are commonly used in industrial settings, such as oil refineries, chemical plants, and power stations, where heavy loads and harsh conditions are present. They are also suitable for commercial applications, such as pedestrian walkways, ramps, and platforms. The strong and durable nature of these gratings makes them ideal for areas with high foot traffic, such as airports, train stations, and shopping centers.

In conclusion, square ductile gratings are a reliable and robust solution for various industrial and commercial applications. Their ductile iron construction provides strength, durability, and resistance to impact and corrosion. The square-shaped openings allow for efficient drainage and airflow, while also providing a stable and secure surface. With their ease of installation and low maintenance requirements, square ductile gratings offer a cost-effective and versatile solution for many industries.

400x600 Ductile Rain Gratings B125

gratings, gully gratings, ductile gratings, cast iron gratings

Runchun Casting (Zhoushan) Co., Ltd. , https://www.en124casting.com

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