Black-Plated Anchor Bolts

• Customization: Available
• Material: High Strength Steel
• Type: Round Head
• Model NO.: GB/T 799-2020
• Connection: Common Bolt
• Head Style: Round
• Standard: DIN, GB
• Grade: 10.9
• Application: Machinery, Chemical Industry, Environmental, Building
• Finish: Black
• Transport Package: Bag
• Specification: M8-M72
• Trademark: LING KE
• Origin: Yong Nian
• HS Code: 731815
• Production Capacity: 300000/Year
• Package Size: 100.00cm * 80.00cm * 80.00cm
• Package Gross Weight: 100.000kg

Product Description

Black - plated anchor bolts, also known as black - oxide anchor bolts, are a type of foundation bolts with special surface treatment

Surface Treatment Principle: 

Advantages and Disadvantages: 

Applications: 

The black - plating treatment is usually an oxidation process, also known as blackening. The anchor bolts are immersed in a chemical solution containing oxidants and heated, and a layer of magnetite (Fe3O4) film is formed on the surface of the bolts. The thickness of this film is generally 0.6 - 0.8μm, presenting a black or blue - black color.

The advantage is that the black - plating treatment can improve the aesthetic property of the bolts to a certain extent, and in some cases, it can also provide a certain degree of corrosion resistance. However, its corrosion resistance is relatively limited. Without oil - coating, the black - plated bolts will rust quickly, and even with oil - coating, the salt spray test can only reach 3 - 5 hours. In addition, the consistency of torque and pre - tightening force after blackening treatment is poor.

Although the corrosion resistance of black - plated anchor bolts is not as good as that of galvanized anchor bolts, they are still widely used in some occasions with low requirements for corrosion resistance due to their low cost and certain aesthetic property. They can be used in general indoor construction projects, or some equipment fixation with low environmental requirements, such as the fixation of some indoor mechanical equipment, the connection between some non - load - bearing components and the foundation, etc.

Packing & Delivery

Bag Packaging

Carton Packaging

Fasteners can be packaged in durable plastic bags, which are available in various sizes to accommodate different quantities (e.g., small batches of screws, nuts, or bolts). The bags are typically sealed by heat or with a zipper to prevent moisture, dust, and loss of contents. This method is lightweight, cost-effective, and suitable for retail sales, small shipments, or situations where easy access to the fasteners is needed. Additionally, clear plastic bags allow for quick visual identification of the products inside.

For larger quantities or bulk transportation, cartons are commonly used. These are sturdy cardboard boxes, often reinforced with corrugated layers to provide protection against impact during handling and shipping. Fasteners in cartons are usually pre-packed in bags or separated by dividers to avoid friction and damage. Cartons can be labeled with product details (e.g., type, size, quantity) and are stackable, optimizing storage and logistics efficiency. This method is ideal for industrial orders, wholesale distribution, or long-distance transportation where durability is a priority.

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.