Place of Origin:
China
Brand Name:
FH®
Certification:
ISO 9001, ISO14001
Model Number:
FH 4022
FH® Sink Rolls are critical components installed in hot dip galvanizing (HDG) lines to guide and support steel strips through the molten zinc bath.
Designed for continuous galvanizing production, our zinc pot rolls provide excellent corrosion resistance, dimensional stability, and long service life under extreme molten zinc environments.
With advanced alloy manufacturing technology, FH® supplies customized sink rolls for global steel processing companies.
A sink roll (also called zinc pot roll) is a submerged roll located inside the zinc pot of a hot dip galvanizing line.
During the galvanizing process, the steel strip passes through molten zinc at approximately 450°C. The sink roll guides the strip downward and maintains stable movement through the zinc bath.
The performance of the sink roll directly affects:
🟧 How Does a Sink Roll Work?
The working process:
1. Steel Strip Entry
The steel strip enters the zinc pot and moves into the molten zinc bath.
2. Strip Direction Control
The sink roll changes the strip direction and guides it through the bottom section of the zinc bath.
3. Continuous Rotation
The roll rotates continuously under high temperature and corrosive molten zinc conditions.
4. Stable Strip Movement
The strip exits the zinc bath with uniform coating thickness and improved surface quality.
🟨 Key Features & Advantages
🔥 Excellent Corrosion Resistance
Sink rolls operate directly in molten zinc, requiring superior resistance against:
FH® sink rolls are designed for long-term operation in aggressive zinc environments.
🔥 High Temperature Performance
Designed for continuous operation under:
🔥 Superior Mechanical Strength
Our sink rolls provide:
🔥 Extended Service Life
Optimized material selection and manufacturing processes help reduce:
🟩 Sink Roll Applications
FH® Sink Rolls are widely used in:
✔ Hot Dip Galvanizing Lines (HDG)
For:
✔ Continuous Galvanizing Production
Suitable for:
🟥 Material Selection
Depending on operating conditions, FH® provides different alloy solutions.
Heat Resistant Alloy Sink Roll
Advantages:
Customized Alloy Solution
Material selection considers:
🟦 Why Choose FH® Sink Roll?
✅ Professional High Temperature Alloy Manufacturer
FH® specializes in:
✅ OEM Custom Manufacturing
We manufacture according to:
✅ Quality Control
Each sink roll is inspected for:
✔ Dimension accuracy
✔ Surface quality
✔ Material performance
✔ Manufacturing consistency
✅ Export Packaging
Products are delivered with:
🟪 Sink Roll Buying Guide
Before quotation, customers should provide:
Furnace / Galvanizing Line Information:
Roll Information:
FH® provides engineering recommendations based on actual production conditions.
🟧 Material Grade Table
| Heat-resistant Steel | |||||||||||||
| / | GB | DIN | ASTM | JIS | Chemical Composition (%) | Maximum Operation Temperature | |||||||
| C | Si | Mn | Cr | Ni | Nb/Cb | Mo | Other | ||||||
| 1 | ZG40Cr27Ni4 | 1.4823 | HD | SCH11 | 0.30 - 0.50 | ≤2.00 | ≤1.00 | 24.00 - 28.00 | 4.00 - 6.00 | - | ≤0.50 | - | 1050℃ |
| 2 | ZG40Cr22Ni10 | 1.4826 | HF | SCH12 | 0.30 - 0.50 | 1.00 - 2.50 | ≤2.00 | 19.00 - 23.00 | 8.00 - 12.00 | - | ≤0.50 | - | 950℃ |
| 3 | ZG30Cr28Ni10 | - | HE | SCH17 | 0.20 - 0.50 | ≤2.00 | ≤2.00 | 26.00 - 30.00 | 8.00 - 11.00 | - | - | - | 1050℃ |
| 4 | ZG40Cr25Ni12 | 1.4837 | HH | SCH13 | 0.30 - 0.50 | 1.00 - 2.50 | ≤2.00 | 24.00 - 27.00 | 11.00 - 14.00 | - | ≤0.50 | - | 1050℃ |
| 5 | ZG30Cr28Ni16 | - | HI | SCH18 | 0.20 - 0.50 | ≤2.00 | ≤2.00 | 26.00 - 30.00 | 14.00 - 18.00 | - | - | - | 1100℃ |
| 6 | ZG40Cr25Ni20Si2 | 1.4848 | HK | SCH21 | 0.30 - 0.50 | ≤1.75 | ≤1.50 | 23.00 - 27.00 | 19.00 - 22.00 | - | ≤0.50 | - | 1100℃ |
| 7 | ZG30Cr20Ni25 | - | HN | SCH19 | 0.20 - 0.50 | ≤2.00 | ≤2.00 | 19.00 - 23.00 | 23.00 - 27.00 | - | - | - | 1100℃ |
| 8 | ZG40Cr19Ni39 | 1.4865 | HU | SCH20 | 0.35 - 0.75 | ≤2.50 | ≤2.00 | 17.00 - 21.00 | 37.00 - 41.00 | - | - | - | 1020℃ |
| 9 | ZG40Cr15Ni35 | 1.4806 | HT | SCH15 | 0.35 - 0.70 | ≤2.00 | ≤2.00 | 15.00 - 19.00 | 33.00 - 37.00 | - | ≤0.50 | - | 1000℃ |
| 10 | ZG40Cr25Ni35Nb | 1.4852 | HPCb | SCH24Nb | 0.30 - 0.50 | ≤2.00 | ≤2.00 | 24.00 - 28.00 | 33.00 - 37.00 | 0.80 - 1.80 | ≤0.50 | - | 1100℃ |
| 11 | ZG40Cr19Ni39Nb | 1.4849 | - | - | 0.30 - 0.50 | 1.00 - 2.50 | ≤2.00 | 18.00 - 21.00 | 36.00 - 39.00 | 1.20- 1.80 | ≤0.50 | - | 1100℃ |
| 12 | ZG40Cr24Ni24Nb | 1.4855 | - | - | 0.30 - 0.50 | 1.00 - 2.50 | ≤2.00 | 23.00 - 25.00 | 23.00 - 25.00 | 0.80 - 1.80 | ≤0.50 | - | 1050℃ |
| 13 | ZG40Cr25Ni35 | 1.4857 | HP | SCH24 | 0.35 - 0.50 | 1.00 - 2.50 | ≤2.00 | 24.00 - 28.00 | 33.00 - 37.00 | - | ≤0.50 | - | 1100℃ |
| 14 | ZG1Cr20Ni32Nb | 1.4859 | - | - | 0.06 - 0.15 | 0.50 - 1.50 | ≤2.00 | 19.00 - 21.00 | 31.00 - 33.00 | 0.50 - 1.50 | ≤0.50 | - | 1050℃ |
| 15 | ZG45Cr12Ni60 | - | HW | - | 0.35 - 0.75 | ≤2.00 | ≤2.00 | 10.00 - 14.00 | 58.00 - 62.00 | - | - | - | 1100℃ |
| 16 | ZG45Cr18Ni66 | - | HX | - | 0.35 - 0.75 | ≤2.00 | ≤2.00 | 15.00 - 19.00 | 64.00 - 68.00 | - | - | - | 1100℃ |
| 17 | ZG1Cr28Co50 | 2.4778 | - | - | 0.05 - 0.25 | 0.50 - 1.00 | ≤1.50 | 27.00 - 30.00 | ≤1.00 | ≤0.50 | ≤0.50 | Co:48.0 - 52.0 | 1200℃ |
| 18 | ZG30Cr28Co50Nb | 2.4779 | - | - | 0.25 - 0.35 | 0.50 - 1.50 | 0.50 - 1.50 | 27.00 - 29.00 | - | 1.50 - 2.50 | ≤0.50 | Co:48.0 - 52.0 | 1200℃ |
| 19 | ZG40Cr28Ni48W5 | 2.4879 | - | SCH42 | 0.35 - 0.55 | 1.00 - 2.00 | ≤1.50 | 27.00 - 30.00 | 47.00 - 50.00 | - | ≤0.50 | W:4.0 - 5.5 | 1200℃ |
🟥 FAQ
Q1: What is a sink roll in hot dip galvanizing?
A sink roll is a submerged roll installed inside the zinc pot of a hot dip galvanizing line. It guides the steel strip through molten zinc and ensures stable coating production.
Q2: What is another name for a sink roll?
Sink rolls are also known as:
Q3: What material is used for sink rolls?
Sink rolls are usually manufactured from specialized heat-resistant and corrosion-resistant alloys designed for molten zinc environments.
Q4: How long does a sink roll last?
Service life depends on:
Proper alloy selection can significantly extend operating life.
Q5: Can FH® manufacture customized sink rolls?
Yes. FH® provides OEM sink rolls based on customer drawings, equipment models, and production requirements.
Q6: Why do sink rolls fail?
Common failure reasons include:
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