Certified U2/U3 Studlink Mooring Anchor Chain - Precision Flash Butt Welded & Super-Strength

Name: Certified U2/U3 Studlink Mooring Anchor Chain - Precision Flash Butt Welded & Super-Strength
Brand: Qingdao Haosail Machinery Co., Ltd
SKU: 2272064705

Shandong, ChinaQingdao Haosail Machinery Co., Ltd

US$3.00

100 Pieces

Product profile

Customization

Available

Usage

Transmission Chain, Drag Chain, Conveyor Chain, Dedicated Special Chain, Lifting

Material

Iron

Model NO.

Anchor chain

Surface Treatment

Baking Paint

Feature

Heat Resistant

Chain Size

1/2"*3/32"

Structure

Welded Chain

Color

Black

Production

Flash Butt Welding

Grade

U1/U2/U3/R3/R4

Grade Material

U1:Cm370 U2: Cm490 U3: Cm690

Certificate

Lr/ABS/Dnv/BV/CCS

Surface

Black Coating/Galvanizing

Transport Package

in Bundle

Specification

16-132mm

Trademark

HAOSAIL

Origin

China

HS Code

7315810000

Production Capacity

5000tons/Year

Key features

Super-Strength Design: Hot-rolled anchor steel (CM490/CM690) with center studs for enhanced load distribution and anti-twist stability.

Certified Quality: Compliant with ISO 1704:2008 and certified by LR, ABS, DNV, BV, and CCS for global marine standards.

Customizable Grades: Available in U1, U2, U3, R3, and R4 grades with customizable surface treatments like black coating or galvanizing.

Precision Manufacturing: Produced via precision flash butt welding with 100% visual and functional inspection for guaranteed integrity.

Traceable Production: Each 27.5m link features unique identification numbers for full origin and maintenance history tracking.

Wide Diameter Range: Stock diameters from 16mm to 132mm with proof loads up to 5720KN and breaking loads up to 11420KN.

Professional Support: Expert technical design and training services for lifting, rigging, and mooring system optimization.

Flexible Customization: Supports full customization from samples or designs, including specific lengths and connection designs.

Company profile

Importers and ExportersODM ServicesManagement Certification100% Finished Products Inspection

Qingdao Haosail Machinery Co., Ltd

Shandong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 8 Years CertifiedNearest Port: Qingdao PortAverage Response Time: ≤2.19h

AI-Powered supplier vetting

SummaryHaosail demonstrates broad equipment-related business scope, documented quality and service procedures, ISO9001:2015 certification, four production lines, and 50 quality-control staff. It offers extensive customization, ODM and OEM services, reports new products within the past year, and has two years of total R&D engineer experience stated. Overseas support includes warehouses, showrooms, agents or branches, installation, debugging, maintenance, repair, and training. Export sales account for 90%, with stated lead times within 15 workdays in both peak and off-season. Financial records are indicated for 2022–2024, but no financial figures or performance evidence are provided. Customer cases and specific customer references are not supplied.

Supplier typeThe stated business scope includes sales of mechanical equipment, metal chains and other metal products, marine aquaculture equipment, pumps and vacuum equipment, automotive spare parts, and electronic products. This supports classification as a diversified equipment and industrial-products supplier, but the slice does not identify a narrower legal or manufacturing category.

CertificationsThe supplier reports holding an ISO9001:2015 certificate. This is explicit evidence of a quality management system certification, although the provided information does not include the certificate body, validity period, or scope.

After-Sales capabilityThe supplier reports written and followed procedures for complaint handling, corrective and preventive actions, and service capability assessment. It also states that overseas warehouses, showrooms, agents or branches, and services including installation, debugging, maintenance, repair, and training are available; stated service lead time is within 15 workdays in both peak and off-season.

R&D capabilityThe supplier reports new products within the past year, ODM capability, an available SDK, ERP-based digital management, and ongoing enterprise digitalization. These statements support active R&D and digital-transformation capability, although the limited stated total R&D engineer experience of two years prevents a stronger assessment of technical depth.

Production capacityThe supplier reports four production lines, 50 quality-control staff, multiple machines covering heading, wrapping, heat treatment, netting, welding, and dynamometer testing, and uniformly followed finished-product inspection instructions. It also reports qualified service suppliers, overseas service resources, and lead times within 15 workdays, providing explicit evidence of operational capacity.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. It also reports ODM service availability, directly supporting a broad product-development and customization offering.

Product Q&A

Q:What are the main materials used for studlink anchor chains?

The main materials are hot-rolled anchor steel (CM490, CM690) which offer high strength and durability, suitable for heavy-duty applications. Stainless steel (316, 316L) is also used, especially in environments where corrosion resistance is crucial, as it can withstand the harsh marine environment with its excellent resistance to rust and chemical corrosion.

Q:How do I choose the right diameter of the studlink anchor chain for my ship?

The diameter of the chain should be selected based on the size and weight of your boat. Larger and heavier ships require thicker chains to handle the greater loads. As a general rule, the larger the displacement of the ship, the higher the tensile force the anchor chain needs to withstand, thus requiring a larger diameter chain. You can also consult the ship's construction standards or marine equipment experts for more accurate advice.

Q:What is the significance of the stud in the studlink anchor chain?

The stud increases the strength of the link by evenly distributing the load. It prevents link elongation under heavy stress, reduces the risk of link twisting, which could lead to tangling, and also adds some extra weight to the chain. All these functions contribute to the overall reliability and performance of the anchor chain during anchoring operations.

Q:Can studlink anchor chains be used in extreme weather conditions?

Yes, especially higher-grade studlink anchor chains (such as grade 3) that have better mechanical properties due to more rigorous heat treatment. They can withstand higher loads and are more resistant to fatigue. However, it is still important to ensure that the chain is properly maintained and inspected regularly, as extreme weather can put additional stress on the chain. In very cold conditions, for example, some materials may become more brittle, so it is crucial to choose the right material

Q:How is the quality of studlink anchor chains ensured?

Quality is ensured through compliance with international standards like ISO 1704:2008. Manufacturers also obtain certifications from major classification societies such as DNV, GL, ABS, LRS, RINA, BV, NK, KR, IRS, RS. These certifications are based on strict testing procedures, including tensile strength testing, fatigue testing, and dimensional inspections. Additionally, the unique identification number on each chain allows for traceability, ensuring that any quality issues can be traced back t