Anchor line U series

Overview
Studless Link Anchor Chain is manufactured from flash butt welded steel links without internal studs. It is designed for marine anchoring, offshore mooring, floating structures and other maritime applications where reduced weight, improved flexibility and easier handling are required. Standard diameters range from 12.5 to 90 mm. Materials: CM490 and CM690. Strength grades: U1, U2, U3. Standard shot lengths: 25 m or 27.5 m. Each chain is permanently identified to ensure full traceability.

Introduction
The chain is produced by flash butt welding and heat treatment followed by calibration, dimensional inspection, proof load and breaking load testing to meet international marine requirements. The studless construction eliminates the internal stud, reducing weight and increasing flexibility for handling, stowage and deployment. Typical applications include ship anchoring systems, offshore mooring, floating production and storage units, aquaculture and towing operations. Custom diameters and grades are available on request.

Product Features

• Flash butt welded studless link construction
• Available in U1, U2 and U3 strength grades
• CM490 and CM690 steel materials
• Nominal diameters from 12.5 mm to 90 mm
• Standard shot lengths of 25 m or 27.5 m
• Compatible with Kenter shackles, joining shackles, swivels and anchors
• Permanent individual identification for traceability

Parameter
Nominal diameters: 12.5–90 mm. Proof load, breaking load and weight per metre increase with diameter and strength grade; full dimensional and load tables (proof load, breaking load and weight per metre for U1/U2/U3) are available on request. Standard shot lengths: 25 m or 27.5 m. MOQ: 100 meters.

Standards
Name: Studless Link Anchor Chain
MOQ: 100 Meters
Package: Steel pallet / bundle
Manufacturing standards: ISO 1704, IACS UR W18, IACS UR A1, relevant EN and GB standards and recognised shipbuilding specifications. Certification options: ABS, BV, CCS, DNV, LR, NK, KR, RINA, RS, RMRS upon customer request.
Testing standards: Chemical composition verification, mechanical property testing, dimensional inspection, flash weld inspection, proof load testing and breaking load testing per classification society requirements. Heat treatment, hardness checks, visual inspection, calibration and permanent identification marking are completed before shipment. Material certificates and inspection reports supplied with orders.
Application standards: Suitable for offshore mooring systems, FPSOs, floating platforms, offshore wind projects, fish farming, tug and towing operations, floating docks, buoys and general anchoring where studless chain is specified.
Maintenance standards: Inspect chain regularly for wear, corrosion, elongation, cracked welds, deformed links and damage. Evaluate wear allowance and service condition per IACS and relevant classification society requirements. Remove and replace damaged or excessively worn sections to maintain system integrity.

Characteristics / Technical specifications

• Product name: Studless Link Anchor Chain
• Model / Commercial denomination: Studless Link Anchor Chain
• Materials: CM490, CM690 steel
• Strength grades: U1, U2, U3
• Nominal diameters: 12.5 mm to 90 mm (standard range; full table available)
• Standard shot lengths: 25 m or 27.5 m
• Standard processes: Flash butt welding, heat treatment, calibration, dimensional inspection, proof load and breaking load testing
• MOQ: 100 meters
• Packaging: Steel pallet / bundle
• Traceability: Individual identification marking; material certificates and inspection reports provided