Why DSQ Plates Are Ideal for Galvanizing Tanks
At Hindustan Steel Corporation, we specialize in supplying Dead Soft Quality (DSQ) steel plates — the preferred material for fabricating hot-dip galvanizing tanks due to their unmatched formability, ductility, and corrosion resistance. Sourced as per IS 8917:1978, our DSQ plates are tailored for deep press forming and high-heat applications. Whether you operate a batch-type galvanizing plant or a continuous line, DSQ plates ensure long tank life, minimal weld cracking, and high bending integrity.
What Makes DSQ Steel the Right Choice for Galvanizing Tanks?
Galvanizing tanks require material that can:
- Withstand continuous immersion in molten zinc (≈450°C)
- Be formed into curved tank shapes without cracking
- Offer excellent weldability for corner joints and stiffeners
- Tolerate pickling acids during tank pre-treatment
DSQ plates are manufactured for dead soft behavior, meaning they have low yield strength, high elongation (30–35%), and minimal spring-back — which is ideal when shaping large-radius galvanizing tanks or dip kettles.
Applications in Hot-Dip Galvanizing Facilities
DSQ plates are extensively used for:
- Main galvanizing tank (zinc bath) walls and base
- Skirt plates and inner tank linings
- Partition baffles and furnace-embedded tanks
- Heat shields and transfer troughs
Their non-brittle, cold-workable nature reduces post-fabrication failure, even under the thermal cycling that tanks undergo daily.
Technical Properties That Matter
| Property | Typical DSQ Value |
|---|---|
| Yield Strength | 180 – 220 MPa |
| Elongation | ≥30% |
| Tensile Strength | 320 – 400 MPa |
| Standard | IS 8917:1978 |
| Chemical Control | Low Carbon, Low Sulphur |
| Bending Radius | As low as 1.5t |
These features directly translate to ease of tank fabrication, longevity in molten zinc, and resistance to micro-cracking.
Manufactured as per IS 8917:1978 (BIS Standard)
Our DSQ plates comply with Bureau of Indian Standards IS 8917:1978, which governs steel for deep drawing and soft-forming applications. Unlike IS 2062 structural grades, DSQ has enhanced ductility and is specially heat-treated to eliminate strain hardening — crucial for high-temperature galvanizing environments.
Supplied in Custom Widths, Thicknesses & Cut Lengths
We supply DSQ plates in:
- Thickness: 5 mm to 40 mm
- Width: 1250 mm to 2500 mm
- Length: Up to 12000 mm
- Shape: Flat, curved (pre-rolled), corner-bent sections
We offer cut-to-size, laser-marked, and pre-fabricated tank profiles for galvanizing OEMs and tank manufacturers.
Welding & Forming Compatibility
Dead soft plates are compatible with:
- MIG, TIG, and SAW welding
- Press bending and hydraulic forming
- Cold and hot forming for round or rectangular tanks
The low carbon and sulphur content improves weld joint life and avoids stress-induced cracking near heat zones in tanks.
Why Leading Galvanizing Plants Choose HIND DSQ
- Formability without cracking
- Consistent batch-wise chemistry
- Customizable for furnace-embedded tanks
- Proven supply to galvanizing OEMs in Saudi Arabia, UAE, and Vietnam
We ensure 100% mill traceability, ultrasonic tested plates, and flexible logistics.
Related Grades for Galvanizing Use
While DSQ is the first choice, we also offer:
- IS 2062 E250/E350 (for outer tank structures)
- A283 Grade C (for moderate strength needs)
- SAILMA E250 HR (for bracing)
Our technical team can help you choose grade combinations to optimize tank durability and cost.
DSQ Plate Exports for Galvanizing Industry
We export DSQ plates for galvanizing tank making to:
- Saudi Arabia – for turnkey galvanizing lines
- UAE – small-batch fabricators and zinc bath suppliers
- South Africa, Egypt – infrastructure coating OEMs
We support third-party inspections, export packing, and door delivery with full documentation.
Buying Tips for Galvanizing Tank Plates
- Ask for dead soft test certificates (elongation >30%)
- Choose low-sulphur steel for better tank weld life
- Match the thermal expansion coefficient with tank framework
- Always test a sample bend at forming radius before full fabrication
Certifications & Testing Offered
- Mill TC as per IS 8917
- Ultrasonic Testing (UT Level 2 or 3)
- NABL Lab Mechanical Testing
- Visual + Surface Finish Inspection
- ISO 9001 & BIS compliant
FAQs Why DSQ Plates Are Ideal for Galvanizing Tanks
Can DSQ steel withstand hot-dip galvanizing temperatures?
Yes, it’s engineered to tolerate up to 450°C without warping or deforming.
What is the standard for DSQ plate in India?
IS 8917:1978 is the BIS standard for Dead Soft Quality steel plates in India.
Is DSQ better than IS 2062 for zinc tanks?
Yes. DSQ is softer, more ductile, and has better forming behavior compared to structural IS 2062 grades.
What thickness DSQ plate is ideal for galvanizing tanks?
Generally 6 mm to 12 mm, depending on tank size and expected life.