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FH® Well-type Furnace Fixture System | Base Tray + Stacking Baskets + Grid
Key Benefits
- Complete System Solution
Base tray + intermediate baskets + top grid – designed as an integrated system for stable stacking and optimal gas flow. - Heavy-Load Bearing
Reinforced rib structures and support feet distribute weight evenly – supports tall stacks of parts or multiple baskets without center sagging. - Gas Circulation Optimized
Raised feet on base tray + open grid patterns allow hot gas to flow around all surfaces – uniform heating from bottom to top. - Long Service Life
Precision fabrication and stress-relieved design resist thermal fatigue, creep, and atmosphere attack under normal operating conditions. - Custom Configuration
Circular or rectangular – precisely matched to your furnace internal dimensions. Segmented options for large diameters.
System Components
| Component | Function | Key Feature |
| Base Tray | Foundation for entire stack | Raised feet for gas flow, reinforced ribs for load distribution |
| Stacking Baskets | Hold and separate parts | Open grid design, smooth edges, stackable interface |
| Top Grid | Secures top layer | Prevents tipping during handling, weight retention |
Technical Specifications
| Parameter | Value |
| Operating temp. range | 400°C – 1200°C (depending on material selection) |
| System components | Base tray + stacking baskets + top grid |
| Max. total load | 500 – 2000 kg (design dependent) |
| Shape | Circular (standard) or rectangular |
| Standard diameters | 600 mm, 800 mm, 1000 mm, 1200 mm (custom available) |
| Fabrication | Precision welding or investment casting |
| Surface finish | As-welded / pre-oxidized / shot-blasted |
| Material selection available based on your operating temperature and atmosphere | |
Why Choose FH® Well-type Furnace Fixtures?
1. Designed for Well-type Furnace Challenges
| Challenge | FH® Solution |
| Heavy stacks (2–3 meters tall) | Reinforced ribs + high-strength design |
| Bottom layer uneven heating | Raised feet + open grid patterns |
| Difficult top access installation | Segmented options for large diameters |
| Thermal cycling stress | Rounded corners + stress-relieved construction |
2. The Foundation of Your Entire Load
The base tray supports everything above it. If it sags, cracks, or fails, the entire batch is compromised – parts may tip, baskets may bind, and heating becomes uneven. FH® base trays are engineered specifically for this critical role.
3. Design Features That Matter
| Feature | Benefit |
| Reinforced rib underside | Prevents center sagging under heavy loads |
| Raised support feet | Allows gas flow under bottom layer – uniform heating |
| Smooth top surface | Stable base for stacking baskets |
| Open grid pattern | Maximum gas circulation, minimal thermal mass |
| Rounded corners (rectangular) | Reduces stress concentration |
| Segmented construction (large diameters) | Easy installation through top opening |
4. Clean Operation
- Pre-oxidized or shot-blasted surface reduces initial scaling
- Smooth weld finishes prevent part damage and scale adhesion
- Parts come out cleaner – reduces post-treatment cleaning
Applications
- Well-type / pit carburizing furnaces
- Well-type carbonitriding furnaces
- Well-type annealing furnaces
- Well-type hardening furnaces
- Well-type tempering furnaces (medium-high temperature)
- Well-type gas nitriding furnaces
- Parts: large gears, shafts, rings, dies, tooling, heavy castings, long tubes
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℃ |
Genuine Photos of FH® Heat Treatment Fixtures
Ordering Process
- Provide furnace internal diameter (or L×W), depth, and access method
- Share part dimensions, max load weight per batch, and operating temperature
- Specify atmosphere (carburizing, carbonitriding, annealing, etc.)
- FH® engineers propose complete system design + 3D layout
- Confirm component quantities (one base tray + number of baskets)
- Production: 15–25 working days
- Delivery includes: MTC, inspection reports, stacking diagram, care guide
FAQ:
Q: What does a complete FH® well-type furnace fixture system include?
A: Base tray + stacking baskets + top grid – designed to work together.
Q: How many baskets can I stack?
A: Depends on furnace depth. FH® calculates this for you during design.
Q: How long do the fixtures last?
A: Typically 300–600 cycles with proper maintenance and normal operating conditions.
Q: Can you custom-make fixtures for my furnace?
A: Yes – custom sizes, shapes, and segmented designs are our specialty.
Q: What is your warranty?
A: 12 months against manufacturing defects.
Tel: 0510-83310100 
E-mail: 
Add: Room 1105,Building 6, Jiaye Wealth Center,Wuxi, Jiangsu, P.R.China P.C.:214000. 