Hot-DIP Galvanizedl Tower Crane Bolt

• Customization: Available
• Material: Carbon Steel
• Type: Hexagon Head
• Model NO.: GB/T 1231-2024
• Connection: Common Bolt
• Head Style: Hexagonal
• Standard: DIN, GB
• Grade: 8.8
• Application: Machinery, Chemical Industry, Environmental, Building
• Finish: Hot Galvanizing
• Transportation Mode: by Sea
• Transport Package: Bag
• Specification: M16 - M30
• Trademark: LING KE
• Origin: Yong Nian
• HS Code: 731815
• Production Capacity: 200000/Year
• Package Size: 60.00cm * 40.00cm * 40.00cm
• Package Gross Weight: 50.000kg

Product Description

Hot-dip galvanized tower crane bolts undergo a rigorous surface treatment process.

Galvanizing Process and Coating Characteristics

Superior Corrosion Resistance for Outdoor Environments

 Critical Applications in Tower Crane Structures

Hot-dip galvanized tower crane bolts undergo a rigorous surface treatment process. First, the base steel bolts are thoroughly cleaned to remove rust, oil, and other contaminants through processes like pickling and rinsing. Then, they are immersed in a molten zinc bath (typically at 440-460°C), where a metallurgical reaction occurs between the steel and zinc. This forms a multi-layer coating consisting of zinc-iron alloys and a pure zinc outer layer, with a total thickness usually ranging from 60-100 microns. Unlike electro-galvanizing, this thick, dense coating adheres tightly to the bolt surface, creating a robust physical barrier against corrosion. The process ensures uniform coverage even in recessed areas like thread roots, which is critical for bolts used in complex tower crane structures.

One of the core advantages of hot-dip galvanized tower crane bolts is their exceptional resistance to corrosion, making them ideal for the outdoor, exposed conditions where tower cranes operate. The zinc coating acts as a sacrificial anode: when exposed to moisture, salt, or industrial pollutants, zinc corrodes preferentially to protect the underlying steel. Even if the coating is scratched, the surrounding zinc continues to shield the exposed steel through cathodic protection. This durability allows the bolts to withstand harsh weather—including rain, humidity, and UV radiation—and resist rust for 15-30 years in most environments, significantly reducing maintenance needs and extending the service life of tower crane connections.

Hot-dip galvanized tower crane bolts play a vital role in maintaining the safety and stability of tower crane assemblies. They are widely used in connecting key components: tower mast sections, where they ensure vertical alignment and load distribution; jib and counter jib joints, where they withstand bending and torsional forces; and slewing rings, which require reliable fastening to handle rotational movements. Their corrosion resistance is particularly valuable for cranes operating in coastal areas (with salt spray), industrial zones (with chemical fumes), or humid climates, where unprotected bolts would degrade rapidly. By combining high strength with long-term durability, these bolts contribute directly to the safe, continuous operation of tower cranes in construction and heavy-lifting projects.

Item	Details
Structural Composition	Hot-dip galvanized tower crane bolts
standard	GB/T 1231-2024
Surface Treatment	Hot - dip galvanized

Packing & Delivery

 Corrugated cartons

Packing Quantity:
Retail/small orders: Typically 10 pieces, 50 pieces, or 100 pieces per box, depending on the size. For example, M6-M10, 3-piece shield anchors are commonly packed 100 pieces per carton.
Wholesale/large orders: Larger quantities like 500 pieces, 1000 pieces, or 2000 pieces per carton are available, which is more cost-effective for bulk purchases.
Packaging Dimensions:
The size of the carton depends on the anchor specifications and packing quantity. For instance:
A carton containing 100 pieces of M8×60mm 3-piece shield anchors may have dimensions of approximately 300×200×150mm.
A larger carton with 1000 pieces of M12×90mm anchors could measure around 500×350×300mm.
Labeling:
Each package is clearly labeled with key information, including product name ("3-piece Shield Anchor"), specification (e.g., "M6×50mm"), material, surface treatment (e.g., "Hot-dip Galvanized"), quantity, net weight, gross weight, manufacturer's name, and logo. Handling marks such as "Keep Dry", "Handle with Care", and "Stack Height Limit" are also printed on outer cartons to guide proper storage and transportation.

Company Profile

Company Name

 Hebei LING KE Metal Products Manufacturing Co.has firmly established itself as a leading force in the fastener industry, with a rich history and a commitment to excellence that spans over 10 years. Since its inception, the company has been dedicated to providing high-quality fasteners and comprehensive fastening solutions to a diverse range of industries worldwide.In recent decades, Hebei LING KE Metal Products Manufacturing Co. has expanded its footprint globally, establishing strategic partnerships and distribution centers in key regions around the world. This has allowed the company to better serve its international customer base and meet the growing demand for its products in emerging markets.