Lifting Chains
GRADE T ( 80 ) HOIST CHAIN TYPE T EN818-7
A welded link hoist chain in Grade T (80) alloy steel, conforming to EN818-7, designed for overhead lifting with a 4:1 design factor. It is quenched and tempered, proof tested, and available in black electrophoresis or zinc plated finish. Sizes range from 4mm to 22mm nominal, with working load limits from 12.6t to 380t. Supplied on drums with steel pallets.
- Material
- The highest quality alloy steel Processing: Welded
- Finish
- Electrophoresis/zinc plated finish/Black Ultimate load is 4 times at working load limit
- Packing
- Drum + Steel pallets
- Catalogue Family
- Lifting Chains
- Certificates
- EN 10204 3.1 material test certificate on request
CAD files are supplied on request via WhatsApp or email rather than published for open download.
Key Benefits
What Grade T Gives You
- Conforms to EN818-7 mechanical properties with a 4:1 design factor ensuring safe working load limits
- Quenched and tempered alloy steel provides high tensile strength and impact resistance
- Welded construction with consistent link geometry for reliable load transfer
- Black electrophoresis or zinc plated finish resists corrosion in industrial and outdoor environments
- Proof tested on production batches to verify strength and integrity before shipment
- Available in a full range of sizes from 4mm to 22mm nominal with documented working load limits
- Supplied on drums with steel pallets for secure transport and easy handling
Application Scenarios
Where Grade T Is Used
- Overhead crane lifting in steel fabrication shops and industrial manufacturing facilities
- Heavy-duty lifting in ports and shipyards where chain durability and traceability are critical
- Construction site hoisting of structural steel beams and precast concrete elements
- Mining and energy plant maintenance where chains must withstand repeated loading and vibration
- Marine and offshore rigging operations requiring corrosion-resistant lifting hardware
- Lifting operations in harsh environments with exposure to moisture, dust, and chemicals
Who It Is For
Buyers This Product Is Built For
- Industrial plant maintenance teams specifying lifting chains for cranes and hoists
- Construction contractors sourcing chains for structural lifting and rigging setups
- Port and terminal operators requiring durable chains for container handling and shipboard lifting
- Manufacturers of lifting equipment integrating chains into hoist systems and winches
- Rigging distributors stocking EN818-7 compliant chains for industrial and offshore markets
Problems It Solves
Problems This Product Removes
- Risk of chain failure due to non-compliant material or inadequate heat treatment in lifting applications
- Inconsistent load capacity from chains not proof tested or stamped with traceable working load limits
- Corrosion damage in humid or marine environments due to poor surface finish
- Lack of compliance with EN818-7 standards leading to safety and audit issues
- Difficulty sourcing a full range of sizes from a single supplier with documented mechanical properties
- Multiple suppliers needed for chain, proof test records, and finish options, increasing procurement complexity
Technical Features
Technical Features
- Welded link construction with consistent geometry and uniform strength distribution
- Grade T (80) alloy steel with quench and temper heat treatment for high tensile strength
- Conforms to EN818-7 mechanical properties including 4:1 design factor
- Proof load tested on production batches before release
- Working load limit and traceability marking stamped on each chain link
- Black electrophoresis or zinc plated finish applied after welding and heat treatment
- Nominal size, pitch, external width, internal width, and weight per meter clearly specified
Specifications
Grade T Specifications
Values published in the Kailipu catalogue for this item. Anything not listed is available on request.
| Standard | EN818-7 |
|---|---|
| Grade | T (80) |
| Material | Highest quality alloy steel |
| Processing | Welded, quenched and tempered |
| Surface Finish | Black electrophoresis or zinc plated |
| Design Factor | 4:1 minimum breaking load to safe working load |
| Capacity Range | 12.6t to 380t safe working load |
| Nominal Size Range | 4mm to 22mm |
| Proof Force | 20.1kN to 407kN |
| Min. Breaking Force | 3.2kN to 14kN |
| Bend Deflection | 3.2mm to 18mm |
| Weight per Meter | 0.349kg/m to 10.391kg/m |
| Packing | Drum with steel pallet |
Full size table on request. The catalogue publishes a full dimension and capacity table for this item. Ask on WhatsApp or by email and we will send it as a PDF.
Materials
Materials And Finishes
- High-quality alloy steel used for the chain links and welds
- Quenched and tempered to achieve Grade T (80) mechanical properties
- Black electrophoresis finish applied for corrosion resistance and durability
- Zinc plated finish for enhanced protection in humid or outdoor environments
- Weld metal matched to base material to maintain strength and integrity
Manufacturing Process
How This Product Is Made
1Raw alloy steel material cut to length for chain links
2Welding of links using precision automated welding equipment
3Quench and temper heat treatment to achieve required tensile strength
4Proof load testing on production batches to verify strength and elongation
5Surface finishing by electrophoresis or zinc plating after heat treatment
6Stamping of working load limit and traceability marks on each link
7Inspection of dimensions and weld quality before packing
8Packing on drums with steel pallets for export
Quality Control
Quality Control On Every Batch
- Proof load test on each production batch to confirm strength and elongation
- Dimensional tolerance check against EN818-7 specifications
- Breaking strength validation to ensure 4:1 design factor is met
- Visual and dimensional inspection of welds and link geometry
- Material Test Certificate to EN 10204 3.1 supplied with orders
- Third-party inspection accepted at the China warehouse before shipment
- Traceability marking stamped on each chain link for field identification
Customisation
Customisation Options
- Custom tonnage stamping on the chain links for client-specific marking
- Private label and OEM marking available upon request
- Surface finish to order: black electrophoresis, zinc plating, or custom
- Custom packing configuration for drum size, pallet type, or carton layout
- Chain lengths built to a drawing or specified length for integration into systems
Compare
How It Compares With The Alternatives
An honest read on where this pattern wins and where another one would serve you better.
| Alternative | Honest Trade Off |
|---|---|
| Grade 80 alloy chain | Grade T (80) meets EN818-7 with a 4:1 design factor; Grade 80 may follow different standards and not always include proof testing |
| Non-proof tested chain | This chain is proof tested and stamped with WLL, reducing risk of overloading and failure |
| Galvanized chain | Zinc plated offers better corrosion resistance than standard galvanizing in industrial environments |
| Cast chain | Welded construction provides consistent strength and geometry, unlike cast links which may have internal voids |
| Unmarked chain | Each link is stamped with WLL and traceability data, enabling safe use and audit compliance |
Use Guide
How To Use And Inspect Grade T
- Always verify the stamped working load limit matches the calculated load before lifting
- Do not exceed the working load limit under any circumstances, even for short durations
- Inspect the chain before each use for wear, deformation, or surface damage
- Ensure the chain is properly aligned in the sheave or hook to avoid side loading
- Avoid sharp bends or contact with rough surfaces that can cause localized stress
- Retire the chain if the link shows visible deformation, the weld is cracked, or the marking is illegible
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Answers
Grade T FAQ
What standard does this chain conform to?
It conforms to EN818-7 for hoist chains, with a 4:1 design factor and proof testing as required.
Is the chain proof tested?
Yes. Each production batch is proof tested before release, and the test results are documented.
What surface finishes are available?
Black electrophoresis or zinc plated finish. Custom finishes are available upon request.
Can you supply Material Test Certificates?
Yes. A Material Test Certificate to EN 10204 3.1 is supplied with every order.
What is the design factor?
A standard 4:1 design factor, meaning the minimum breaking load is four times the stated safe working load.
Can you custom stamp our brand or tonnage?
Yes. Custom tonnage stamping, private label marking, and OEM branding are standard options.
How is the chain packed for export?
Supplied on drums with steel pallets. Custom packing configurations are available to suit warehouse or logistics needs.
Need A Quote On Grade T
Send the sizes, the finish and the quantity on WhatsApp or by email. You get a priced reply within 24 hours and a straight answer on stock.
We reply within 24 hours on WhatsApp or by email. Send a drawing, a photo or a bill of materials and we will quote it as it stands.