Dacromet-Treated Flange Connection Bolts

• Customization: Available
• Material: High Strength Steel
• Type: Round Head
• Model NO.: GB/T 16674.1-2016
• Connection: Common Bolt
• Head Style: Round
• Standard: DIN, GB
• Grade: 8.8
• Application: Machinery, Chemical Industry, Environmental, Building
• Finish: Dacromet
• Transportation Mode: by Sea
• Transport Package: Bag
• Specification: M6-M64
• Trademark: LING KE
• Origin: Yong Nian
• HS Code: 731815
• Production Capacity: 200000/Year
• Package Size: 80.00cm * 30.00cm * 30.00cm
• Package Gross Weight: 50.000kg

Product Description

Dacromet-treated flange connection bolts feature a unique surface treatment that combines zinc flakes, aluminum flakes, and a chromium-free organic binder, applied via dipping or spraying and cured at high temperatures (200-300°C). 

Advanced Dacromet Coating for Superior Corrosion Resistance

Precision Engineering for Flange Compatibility

Versatile Applications Across Eco-Conscious Industries

Dacromet-treated flange connection bolts feature a unique surface treatment that combines zinc flakes, aluminum flakes, and a chromium-free organic binder, applied via dipping or spraying and cured at high temperatures (200-300°C). This coating forms a thin (6-12μm) yet dense barrier that outperforms traditional zinc plating in harsh environments. It resists salt spray, humidity, and industrial chemicals, withstanding 500+ hours in ASTM B117 salt spray tests without red rust—ideal for outdoor infrastructure, marine applications, or areas exposed to road salts (e.g., highway bridges). Unlike galvanizing, the chromium-free formula complies with RoHS and REACH standards, making it suitable for eco-sensitive industries like automotive and electronics.

These bolts are engineered with precise thread specifications and flange head designs to ensure secure flange connections. Available in metric sizes from M6 to M64 (e.g., M16×80, M20×100) and imperial sizes from 1/4" to 2", they accommodate coarse (UNC) or fine (UNF) threads to match flange requirements. The hexagonal or 12-point flange heads feature optimized dimensions, with a built-in flange face that distributes clamping force evenly across flange surfaces, reducing gasket leakage risks in fluid systems. Full-threaded variants suit thin flanges, while partial-threaded designs with unthreaded shanks enhance strength for heavy-duty flange joints in machinery or structural applications.

Dacromet flange bolts excel in industries prioritizing corrosion resistance and environmental compliance. In automotive manufacturing, they secure engine flanges and exhaust systems, withstanding heat and road debris while meeting strict emissions standards. In renewable energy, they fasten flanges in wind turbine nacelles and solar panel mounts, enduring outdoor exposure without corrosion. Water treatment plants and wastewater facilities rely on them for pipeline flanges, where resistance to chemicals and moisture prevents contamination risks. Additionally, in architectural hardware—such as outdoor railings or structural flanges—their silver-gray finish offers aesthetic appeal alongside long-term weather resistance, eliminating the need for frequent maintenance or replacement.

Item	Details
Structural Composition	Dacromet-treated flange connection bolts
standard	GB/T 16674.1-2016
Surface Treatment	Dacromet

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.