Australian Standard Link Chain | Short, Medium & Long Welded Chain for Marine

Product Specification

Australian Standard Link Chain | Short, Medium & Long Welded Chain for Marine and General Use

Product Overview

This Australian-market welded link chain range is supplied in short-link, medium-link, and long-link configurations for marine utility, mooring, drag, restraint, barrier, agricultural, and general industrial applications. Selection is based on nominal chain size, reference working load, link dimensions, required length, surface finish, connected fittings, and the actual duty of the chain.

The supplied table represents general welded open-link chain and should not automatically be described as class-approved ship anchor chain, offshore mooring chain, or lifting chain. Grade L short-link chain, Grade 70 transport chain, stainless steel chain, and class-certified marine anchor chain are separate product families with different material, testing, marking, and certification requirements. This product is supplied through qualified long-term chain manufacturing partners, with specification matching and inspection scope confirmed for each order.

Quick Specifications

• Chain range: short link, medium link, and long link → allows selection between compact links, balanced general-purpose geometry, and lighter extended-pitch links.
• Nominal size range: short link 5–24 mm, medium link 3–24 mm, long link 3–10 mm → covers light utility chain through larger general-purpose marine chain sizes.
• Reference working-load range: 0.05–5.43 t in the supplied table → values apply only to the listed chain configuration and must not be transferred to another grade or material.
• Construction: electrically welded round-steel links → link geometry, weld quality, dimensional consistency, and proof-test scope are key purchasing points.
• Surface finish: black finish or hot-dip galvanized → black finish is economical; hot-dip galvanizing provides improved corrosion protection for outdoor and marine exposure.
• Selection data: S, R, F, links per metre, and metres per 100 kg → useful for connection clearance, chain length estimation, packing, and freight planning.
• Application boundary: general-purpose and marine utility chain → overhead lifting, transport restraint, certified ship anchoring, and offshore mooring require separately confirmed chain grades.
• Supply model: sourced through qualified manufacturing partners → factory, material, test, marking, and certificate scope are confirmed before quotation.

Main Technical Parameters

Selection & Inquiry Guide

Step 1: State the actual application: marine utility anchoring, mooring, drag chain, barrier chain, agricultural use, general restraint, lifting, or transport load restraint. The duty determines the required chain grade and compliance route.

Step 2: Select short, medium, or long link; nominal size; required reference working load; and S / R / F dimensions. Provide the mating shackle, hook, connector, sprocket, or anchor fitting dimensions where applicable.

Step 3: Confirm the material and grade. Carbon-steel general-purpose chain is the baseline for the supplied table; Grade L, Grade 70, stainless steel, alloy steel, and class-approved anchor chain require separate technical data.

Step 4: Confirm finish and environment: black / self-colour, hot-dip galvanized, polished stainless steel, or another specified coating. State seawater exposure, splash-zone exposure, chemical exposure, and storage conditions.

Step 5: Confirm supplied length, continuous length or cut lengths, end-link requirement, joining links, shackles or hooks, identification marking, packing method, and whether chain is supplied in coils, drums, bags, pails, or bundles.

Step 6: Provide quantity, required standard and grade, test and certificate scope, third-party or class requirement, delivery destination, required delivery time, and a drawing or sample photo if matching an existing chain.

Structure

Round-steel welded links | Short / medium / long pitch geometry | Link weld zone | Black or hot-dip galvanized finish | Optional end links and connecting fittings | Length marking and packing according to order

Manufacturing, Finish & Inspection Considerations

• Link geometry controls flexibility, mass per metre, connection clearance, and the way the chain sits around fittings; nominal diameter alone is not sufficient for replacement selection.
• Short-link chain gives a compact link pattern and generally higher link density, while medium-link chain balances flexibility and mass. Long-link chain uses extended pitch for lower link count and easier connection but is not automatically suitable for higher load.
• Weld location, fusion quality, dimensional repeatability, and absence of harmful cracking or severe deformation should be included in factory inspection.
• Black or self-colour chain provides limited corrosion protection and normally requires suitable storage, lubrication, or project coating where corrosion exposure is significant.
• Hot-dip galvanizing improves corrosion resistance, but coating thickness can affect link clearance, mass, surface appearance, and compatibility with close-fitting connectors or calibrated equipment.
• Stainless steel and alloy-steel options must use their own material certificate, load table, heat treatment, and test basis; the carbon-steel table should not be reused for another material.
• Proof testing, breaking-load testing, dimensional sampling, marking, and traceability should be stated in the purchase specification instead of being assumed from the product name.
• The supplied description includes a heat-resistant feature, but no temperature range or elevated-temperature load reduction was provided. Heat resistance should not be published until the material and allowable service temperature are confirmed.

Custom Attributes

• Product Category: Welded open-link chain → supplied for Australian-market marine and general-purpose applications.
• Link Type: Short / medium / long → select according to compactness, flexibility, connected fitting, and chain weight.
• Nominal Size: 3–24 mm depending on link type → confirm actual bar diameter S and link dimensions R / F.
• Material: Carbon steel as the reference basis → stainless steel or alloy steel requires separate confirmation and technical data.
• Surface Finish: Black finish or hot-dip galvanized → polished finish is normally relevant to stainless steel rather than standard carbon-steel chain.
• Working Load: Supplied-table reference value → not to be relabelled as proof load, breaking load, lifting WLL, anchor holding capacity, or class-approved load.
• Grade L Option: Separate short-link chain family → standard, design factor, marking, and certificate must be confirmed.
• Grade 70 Option: Separate transport-restraint chain family → lashing capacity and AS/NZS 4344 compliance must be quoted separately; not for lifting.
• Marine Anchor Chain Status: To be confirmed → the listed open-link chain is not automatically a class-approved ship anchor chain or offshore mooring chain.
• Supply Status: Sourced product → supplied through qualified partner factories with agreed inspection, marking, and document scope.

How It Works

Force enters through a compatible anchor, shackle, hook, or connection point → Each welded link transfers tensile force to the next link → Link pitch and inside dimensions control articulation and fitting clearance → Surface finish reduces environmental attack → Periodic inspection identifies wear, corrosion, elongation, distortion, and weld damage

Applications

Marine utility anchoring | General mooring and berth-side utility use | Drag chains | Barrier and safety chains | Pump and suspension applications where specified | Agricultural use | Industrial restraint | General fabrication and maintenance | Replacement chain matching

Certifications & Supply Scope

Mill certificates, maker inspection reports, proof-test records, and third-party inspection can be arranged according to the selected chain type, grade, factory capability, and order requirement. Class society certification is not standard for this general open-link chain and must be confirmed before quotation when the chain is intended for a class-controlled marine application.

Certification options: CCS, NK, BV, ABS, DNV, LR, KR, IRS, RS, RINA, CRS, Makers Test Certificate, and Mill Certificate — available only when required by the project, supported by the selected factory, and accepted by the relevant inspection or class procedure.

Drawing & Photos

FAQ

Q1: Is this the same as class-approved ship anchor chain?

A1: No. The supplied table describes welded open-link chain in short, medium, and long link patterns. A ship anchor-chain order normally requires a separately confirmed chain type, material grade, nominal diameter, proof and breaking loads, end links, joining shackles, marking, and class inspection. The term “anchor chain” should only be used after the intended vessel and approval requirement are confirmed.

Q2: Can the listed chain be used for overhead lifting or transport restraint?

A2: Not by default. Lifting chain must be supplied in the correct lifting grade with applicable marking, proof testing, and certification. Grade 70 transport chain is a separate product complying with its lashing standard and is not a lifting chain. General medium-link and long-link chain should not be promoted for overhead lifting unless a specific certified product specification supports that use.

Q3: What information is required for an accurate quotation?

A3: Confirm application, link type, nominal size, required load basis, material and grade, finish, total length and cut lengths, end fittings, applicable standard, test and certificate scope, marking, quantity, packing, destination, and delivery date. A drawing or sample is recommended for replacement chain.