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Views: 222 Author: Loretta Publish Time: 2025-09-27 Origin: Site
Content Menu
● Significance of Spanish Kenter Shackle Manufacturers and Suppliers
● Leading Kenter Shackle Manufacturers and Suppliers in Spain
>> Irizar Forge
>> Boomarine
● Manufacturing Process and Technical Specifications
● Installation Requirements and Procedures
● Certifications and Quality Assurance
● Typical Applications of Kenter Shackles
● Current Industry Innovations
● Frequently Asked Questions (FAQ)
>> 1. What materials are Kenter shackles made from?
>> 2. How are Kenter shackles assembled?
>> 3. What certifications do Spanish suppliers provide for Kenter shackles?
>> 4. What is the size range for Kenter shackles?
>> 5. Can Kenter shackles be customized?
Kenter shackle manufacturers and suppliers in Spain play a crucial role in the maritime and offshore industries, providing high-quality chain joining solutions key to anchoring and mooring operations. As a modern factory specializing in marine anchor chains, buoy anchor chains, and outfitting products installation and services, Wuhan Jiangnan Anchor Chain Co., Ltd. recognizes the importance of sourcing durable, certified kenter shackles for overseas OEM clients and marine product brands. This comprehensive article explores the leading Kenter Shackle Manufacturers and Suppliers in Spain, detailing their product features, manufacturing processes, quality certifications, and industry applications. It seeks to offer valuable insights to equipment brands, wholesalers, and consumers looking for reliable Kenter shackle partners.
A Kenter shackle is a specialized joining component used to connect two separate anchor chain sections securely. It consists of two interlocking halves held together by a center chock and a taper pin, providing a detachable and reliable link. This design allows convenient assembly and disassembly without compromising strength, which is essential for marine chains that must undergo maintenance or replacement while installed on vessels, offshore platforms, or mooring systems.
Kenter shackles are typically forged from high-strength alloy steel or carbon steel, offering the necessary tensile strength and corrosion resistance to withstand harsh ocean environments. Common nominal sizes range from 12.5 mm to over 160 mm, with protective surface finishes like black paint, hot-dip galvanizing, or electro-galvanizing to enhance longevity.
Spain's maritime tradition and advanced marine equipment manufacturing have established it as a notable hub for Kenter shackle production and supply. Spanish manufacturers provide products that comply with strict international standards, certified by major classification societies including ABS, DNV, Lloyd's Register, and RINA. These certifications assure OEM partners and marine operators that the shackles meet rigorous safety, performance, and durability criteria.
The manufacturers in Spain combine traditional forging expertise with modern technology to produce shackles suitable for heavy-duty anchoring and mooring applications. Over the years, Spain's offshore and shipping sectors have driven innovation, making Spanish Kenter shackles synonymous with quality, reliability, and technical sophistication.
Irizar Forge, located in Lazkao, Spain, is a leading producer of Kenter joining shackles. Their shackles meet IACS-W22 requirements and undergo rigorous testing per DNV OS-E 302 standards. They manufacture a wide size range from 70 mm to 120 mm, using materials such as R4, R4S, and R5 grades of steel.
Their proprietary Smart Con Stud locking mechanism improves safety by ensuring a secure and stable connection. The company is known for seamless integration with stud link chains, swivel anchors, and related mooring components, backed by solid certifications for worldwide marine use.
Links Marine supplies a broad range of marine chains and accessories, including Kenter shackles. They provide stud link chains graded from 12.5 mm up to 114 mm, all certified to international standards such as Lloyd's Register and ABS. Their facility offers on-demand re-galvanization and maintenance services alongside technical consultancy through every stage from production to delivery.
Boomarine specializes in manufacturing Kenter shackles designed for anchoring and mooring systems, available in grades 2 and 3. Their products are made from alloy steel, carbon steel, and stainless steel, treated with hot-dip galvanizing or electro-galvanizing. They adhere strictly to classification society certifications such as DNV, GL, ABS, and Lloyd's Register.
Boomarine offers bespoke shut tailoring and emphasizes rigid quality control, including non-destructive testing and crack-free surface finishing, meeting stringent marine safety standards.
Kenter shackles require precision craftsmanship and advanced metallurgical processing. They are made from specially formulated steel alloys with carbon, chromium, molybdenum, manganese, nickel, and other elements for enhanced strength and toughness.
The manufacturing includes forging billet blanks, followed by controlled heat treatment processes involving quenching and tempering. For example, R5 level mooring chain Kenter shackles undergo a complex thermal treatment where the shackles are heated between 980°C and 1020°C, held for 160-200 minutes, water-cooled, then tempered between 600°C and 650°C for 180-220 minutes to achieve ideal microstructures capable of tensile strengths of 1000-1050 MPa and high fracture toughness.
This precise heat treatment process ensures a narrow strength range, reduced brittleness, and better toughness complying fully with international marine classification regulations.
Proper installation of Kenter shackles is critical for operational safety. The installation typically follows these steps:
1. Insert one half of the Kenter shackle into the chain end, aligning the chain links carefully with the shackle slots.
2. Join the two halves by fitting them together.
3. Insert the central chock and drive in the tapered locking pin, ensuring it is flush and tightly secured.
4. Verify the alignment and fit visually to confirm the shackle is securely connected.
5. Conduct load testing by applying tension to simulate operational conditions, checking for any signs of slippage or loosening.
6. Re-check pin insertion and overall connection integrity post-testing before deployment.
These steps guarantee the Kenter shackle can sustain heavy loads without failure, minimizing marine operational risks.
Spanish manufacturers supply Kenter shackles accompanied by extensive certifications from authoritative classification societies:
- American Bureau of Shipping (ABS)
- Det Norske Veritas (DNV)
- Lloyd's Register (LR)
- Registro Italiano Navale (RINA)
- Bureau Veritas (BV)
- Nippon Kaiji Kyokai (ClassNK)
These certifications verify compliance with ISO and IACS standards, including mechanical testing, metallurgical properties, and production quality controls. Suppliers also provide full traceability with serialized marking and detailed batch documentation, essential for audit and OEM quality assurance.
Kenter shackles serve indispensable functions across various marine and offshore sectors:
- Connecting separate lengths of anchor chains on commercial vessels and military ships.
- Joining chains in offshore oil and gas platforms for mooring and anchoring systems.
- Securing buoys and navigation aids with flexible yet strong chain links.
- Facilitating easy maintenance, replacement, and inspection of chains in harsh marine conditions.
- Used in civil marine infrastructure projects for temporary or permanent chain joining.
Their detachable design allows for faster turnaround times during chain repairs and enhances operational safety.
Kenter shackle manufacturers in Spain are focusing on innovations such as:
- Advanced alloy steels for increased tensile strength and corrosion resistance.
- Enhanced galvanizing and coating technologies to extend service life under extreme conditions.
- Development of smart locking systems improving assembly safety and load monitoring.
- Custom designs catering to studless chains, slim chains, and lightweight yet strong shackles for specialized marine applications.
- Collaboration with OEM clients to meet exact specifications and certification needs.
These advances reinforce Spain's leadership role in marine chain accessories globally.
Spain's Kenter shackle manufacturers and suppliers stand out for their technical excellence, rigorous standards compliance, and product reliability. Their expertise in producing certified, durable, and innovative Kenter shackles is invaluable to marine equipment brands, wholesalers, and offshore industry stakeholders worldwide. Partnering with these suppliers ensures access to high-quality shackles designed for safe, efficient anchoring and mooring operations.
Wuhan Jiangnan Anchor Chain Co., Ltd. values these Spanish suppliers' contributions and continues building collaborative relationships to promote excellence in marine anchoring solutions globally.
Kenter shackles are commonly manufactured from high-strength alloy steel, carbon steel, or stainless steel. Superior corrosion resistance is achieved through surface finishes such as hot-dip galvanizing, electro-galvanizing, or specialized painting.[1][2]
Assembly includes inserting two halves through chain ends, joining them with a center chock, and securing with a taper pin tapped into place for a tight, secure fit. Proper alignment and load testing are essential post-installation.[2]
They provide certifications from major classification societies such as ABS, DNV, Lloyd's Register, RINA, and BV, confirming compliance with international maritime standards and operational safety requirements.[3][10]
Sizes typically range from nominal diameters of 12.5 mm up to 160 mm or more, suitable for various chain grades and marine applications.[10][11]
Yes, manufacturers offer custom shackles for different chain types including studless designs, slim shackles, and special alloy compositions to meet specific operational and OEM requirements.[12]
[1](https://patents.google.com/patent/CN102691014A/en)
[2](https://www.wac-corp.com/what-are-the-installation-requirements-of-a-kenter-shackle-2/)
[3](https://www.classnk.or.jp/hp/pdf/rules/amendments/e-Amendments/14.12.19/720_typ_e.pdf)
[4](https://eureka.patsnap.com/patent-CN111468889A)
[5](http://www.lhrmarine.com/media/downloads/kenter-joining-shackle-technical-sheet.pdf)
[6](https://www.williamhackett.co.uk/files/1742910111_540846aecf0abd3108d7.pdf)
[7](https://www.sotra.net/wp-content/uploads/2021/08/Catalogue-8.pdf)
[8](https://www.toponechain.com/anchor-chain/kenter-shackle.html)
[9](https://www.damenmc.com/kenter-type-joining-shackle/)
[10](https://www.boomarine.com/products/kenter-shackle)
[11](https://www.wac-corp.com/product/kenter-shackle-m2-m3-11mm-162mm/)
[12](https://vicinayconnectors.com/product/kenter/)
