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Quenched & Tempered Steel Plates for Crane Manufacturing

When it comes to mobile cranes, crawler cranes, tower cranes, and heavy-lifting equipment — strength, weight reduction, and structural reliability are critical. This is where Quenched and Tempered (Q&T) steel plates become the industry standard.

At Hindustan Steel Corporation, we supply ultra high-strength Q&T plates used by crane OEMs and boom arm fabricators. Our inventory includes:

  • S690QL / S890QL / S960QL – EN 10025-6 compliant
  • ASTM A514 / A517 – High-strength US grades
  • Dillimax 690T / 890T / 965T – German plates for booms
  • Strenx 700 / 900 / 960 – For lightweight lifting structures
  • HITEN 780LE / 980LE – Japanese plates for precision builds
  • HIND HARD 600 – Our proprietary extreme-strength offering

These plates deliver the strength-to-weight ratio required for extended crane arms, lifting frames, and telescopic boom assemblies.

Applications in Crane Manufacturing

Q&T plates are used across major crane categories:

Crane Applications:

  • Telescopic boom sections
  • Lattice boom and crawler frames
  • Outrigger platforms and stabilizers
  • Lifting arms and pivot plates
  • Counterweight frames and base modules
  • Crane pedestal structures and slewing units

Used in mobile, crawler, truck-mounted, and tower cranes manufactured to lift safely with reduced dead weight.

Mechanical Properties – Plates for Boom Arm & Lifting Load

Cranes demand plates that offer high tensile strength, fatigue resistance, and low weight:

Property Typical Range
Yield Strength 690 – 1100 MPa
Tensile Strength 770 – 1350 MPa
Elongation 12–16%
Impact Resistance ≥47J at -20°C to -40°C
Thickness Range 6 mm – 100 mm

These properties enable longer lifting booms, thinner structures, and higher load ratings per crane unit weight.

Recommended Q&T Grades for Crane Builders

Our technical team works with crane manufacturers to match material grade to function:

Crane Section Recommended Grades
Telescopic lifting booms Strenx 960 / Dillimax 890T / HITEN 980LE
Lattice boom and frames S690QL / HITEN 780LE / A514
Stabilizers and outriggers S890QL / A517 Gr B / HIND HARD 600
Slewing ring base plates Dillimax 690T / S690QL
Counterweight frames Strenx 700 / HIND HARD 500

Lifting performance, weight optimization, and fatigue life are enhanced by Q&T plates engineered for precision-built cranes.

Global Standards for Crane-Grade Q&T Plates

Our plates conform to all leading international structural steel norms for crane boom and chassis fabrication:

Standard Typical Grades Supplied Application
EN 10025-6 S690QL, S890QL, S960QL Boom structures, telescopic systems
ASTM A514 / A517 Grade B, E, F Stabilizers, outriggers, platforms
JIS G 3128 HITEN 780LE / HITEN 980LE Compact cranes, mobile lifting arms
Dillinger Plate Spec Dillimax 690T / 890T / 965T High-performance crawler cranes
SSAB Specification Strenx 700 / 900 / 960 Lightweight, long-range booms

All materials come with EN 10204 3.1 / 3.2 MTC, compliant with OEM and EPC documentation requirements.

Available Sizes, Thickness, and CNC Cutting

We supply Q&T plates in standard and customized formats for crane manufacturers and steel structure fabricators:

Stock Sizes:

  • Thickness: 6 mm – 100 mm
  • Width: 1500 mm – 3000 mm
  • Length: 6000 mm – 12000 mm
  • Option for extended lengths up to 18m (for longer boom sections)

Fabrication Support:

  • CNC plasma, laser, and oxyfuel cutting
  • Boom-plate profiling and notch cutting
  • Weld-edge preparation and hole punching
  • Surface primer coating or hot-dip galvanization

Our supply is cut-to-drawing and supports quick integration into welding, shaping, or robotic assembly lines

Fabrication and Weldability for Boom Construction

Q&T plates are engineered to offer superior weldability and low distortion during welding and forming.

Highlights:

  • Low carbon equivalent = excellent weld flow
  • Minimal hardness drop in HAZ (Heat-Affected Zone)
  • Compatible with MIG/MAG and robotic welding arms
  • Cold or press bending for forming curved boom shapes
  • Preheat recommended only for thickness >40 mm

We provide bending radius guidelines and WPS documents for smooth integration into your crane manufacturing process.

Finish, Testing & Quality Control

Every plate is supplied ready for industrial fabrication — with documentation and inspection reports that meet OEM-level QA/QC.

Standard Testing:

  1. 100% Ultrasonic (UT) tested
  2. Impact tested at -20°C / -40°C
  3. Z-Quality available on request
  4. Dimensional inspection reports
  5. TPI (SGS, Lloyd’s, DNV) stamping if required

Finishes:

  1. Shot-blasted and primer-coated
  2. Bevel edges or square cut
  3. Marked with project or drawing ID

Why Crane OEMs & Boom Fabricators Choose Us

We’ve been the trusted partner for crane manufacturers and heavy fabrication workshops across India, the Middle East, and Southeast Asia.

Our Advantage:

  1. High-strength crane-grade plates always in stock
  2. Brand options: HITEN, Dillimax, Strenx, S690QL, A514
  3. Expert grade recommendation based on your boom specs
  4. Cut-to-size and documentation support for export projects
  5. Fast delivery with lifting-ready packaging

Whether you’re manufacturing a 50-ton crane or a 200-ton crawler, our plates deliver unmatched strength-to-weight precision.

Grade Alternatives Based on Crane Type or Budget

Choosing the right plate often depends on lifting capacity, boom length, and cost targets:

Crane Type / Use Case Best-Fit Grades
Lightweight mobile cranes Strenx 700 / Dillimax 690T
Mid-range lifting (50–100T) S690QL / HITEN 780LE
High-lift telescopic cranes S890QL / A514 Gr Q / Dillimax 890T
Crawler cranes & outriggers HIND HARD 600 / HITEN 980LE
Budget-driven crane builds A517 Gr B / HIND HARD 500

We’ll help you balance performance, lead time, and cost across your crane manufacturing cycle

Export Services for Global Crane Projects

We are a preferred Q&T plate exporter for crane OEMs and fabrication contractors across:

Export Countries Served:

  • UAE, Saudi Arabia, Turkey
  • Bangladesh, India, Indonesia
  • Netherlands, Germany, Singapore
  • South Africa, Egypt, Kenya

Our export solutions include:

  • EN 10204 3.1 / 3.2 certified plates
  • Shot-blasted and primer-coated booms
  • UT + Charpy-tested Q&T steel
  • Custom sizes cut-to-drawing
  • Heat number tagging and CNC labeling
  • Seaworthy packaging for container or open-top

From one-time supplies to repeat BOQ-based orders, we deliver full-loads and part-loads worldwide.

How to Select Q&T Steel for Crane Parts?

Choosing a Q&T plate for cranes requires a mix of technical and cost thinking. Here’s what to check:

Buyer Checklist

  • What is the lifting capacity and boom reach?
  • Will the crane work in cold, seismic, or marine zones?
  • Do you need high fatigue life for repetitive use?
  • Is weight reduction a priority (telescopic or mobile units)?
  • Are plates for OEM or outsourced boom welding?

Recommendations:

  • Strenx 960, Dillimax 890T – for light, long booms
  • HITEN 980LE, S960QL – for high strength & compact design
  • A514 Grade B, HIND HARD 600 – for stabilizers and heavy loads
  • HIND HARD 500, S690QL – for value-focused crane builds

Certificates & Compliance for Crane Steel Projects

Each Q&T plate comes with traceability and test credentials for ISO, CE, or OEM auditing needs:

Documents Supplied:

  • EN 10204 3.1 / 3.2 Mill Test Certificate
  • Ultrasonic Testing Report (UT100%)
  • Impact Test Report at -20°C / -40°C
  • Z-quality or Lamellar Tearing Resistance report
  • CE Certificate, Country of Origin, SGS/TUV endorsement
  • Drawing-based plate tagging with export packing list

Documentation is ready-to-submit for BOQ, third-party inspection, or EPC clearance.

FAQs – Buyer-Centric

Yes. Our Q&T plates offer excellent weldability and low distortion for robotic or manual welds.

Absolutely. We offer full CNC cutting, beveling, and hole punching as per drawing.

We supply 3.1/3.2 MTCs, impact tests, UT reports, CE certs, and full traceability.

Yes. Shot-blasted and primer-coated surfaces are available for quick paint shop use.

A514 Grade B, HIND HARD 600, and S690QL are commonly used for outriggers and base plates.

Yes, we supply multi-grade, multi-thickness bundles tailored to BOQ and drawings.

From 6 mm up to 100 mm — common for lifting arms, chassis frames, and load-bearing parts

Yes. HITEN 780LE and 980LE are widely used in Japanese and international crane builds.

Yes, we export to GCC, Europe, and Africa — with CE and TUV/SGS documentation.

Yes. We handle both domestic dispatch and international containerized or break-bulk loading

In-stock: 3–5 days. Mill-imported: 4–6 weeks based on your project requirement.

S690QL, HITEN 780LE, and Dillimax 690T work well for truss and frame construction.

Yes. Q&T plates are ideal for marine, offshore, and ship-mounted crane components.

Yes, we can share project samples, mill tests, and export client references upon request.

Call to Action – Get Crane-Grade Q&T Steel with Precision Supply

When every kilogram matters — and every weld holds tons of weight — you need a supplier who gets the crane industry.

Order Q&T Plates for:

  • Boom and lattice crane manufacturers
  • Crane chassis fabricators and arm OEMs
  • Heavy-lifting platform suppliers
  • Marine, truck-mounted, and tower cranes
  • Dispatch from: Taloja MIDC, Navi Mumbai

Let’s build cranes that lift higher, last longer, and weigh less.

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+91-22-66159018
+91-9820944724

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390/392, Ground Floor, Shankar Mansion, S.V.P. Road, Mumbai – 400004, India

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Applications

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From trailers and cranes to bridges and defense — explore how Q&T plates serve critical sectors.

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Grades & Standards

Compare EN 10025-6, ASTM A514, and HIND Plates
Detailed breakdown of mechanical properties, uses, and availability across grades like S690QL, S960QL, A514, and more

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Manufacturing Capabilities

Cutting, Sourcing, and Certification Services
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Export Locations

Supplying to UAE, Africa, Southeast Asia, Europe
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FAQs

Answers to 50+ Buyer & Technical Questions
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Technical & Support

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