Lianyungang Huaneng Power Auxiliary Equipment Co., Ltd. · ISO 9001:2015
Chimney Door for Steel Mill
Looking for a reliable chimney door for steel mill? We are a China-based power auxiliary equipment manufacturer supplying steel mill to power plants, coking plants and industrial boilers, with ISO 9001 / ISO 14001 / ISO 45001 certified production.
- ✓ Quotation in 12 working hours
- ✓ MOQ from 1 pc
- ✓ DDP door-to-door
Chimney Door for Steel Mill engineered and fabricated in-house
We have supplied chimney door for steel mill equipment to power plants, coking plants, cement kilns and chemical works for over a decade. Typical scopes run from single shut-off gates to complete flue gas isolation systems with sealing-air fans and control interlocks.
What we deliver
- Louver-type double-layer blades with sealing-air system for zero-leakage isolation
- Electric, pneumatic or electro-hydraulic actuation with torque limiting and position feedback
- Refractory lining and insulation interfaces engineered for high-temperature ducts
- Duct sections, mating flanges and expansion joints supplied to match the installation
- Factory acceptance test with leakage, torque and sealing-air reports for every unit
Technical specifications
| Body material | Steel Mill (and 30+ certified grades) |
|---|---|
| Product | Chimney Door |
| Sealing class | leakage rate below 0.5% with sealing air, 100% shut-off on request |
| Media | Flue gas, hot air, pulverized coal, dusty gas |
| Temperature | Up to 450 °C continuous, 650 °C short-term |
| Size range | Duct sections from 300 × 300 mm up to 6,000 × 6,000 mm |
| Actuation | Electric, pneumatic, electro-hydraulic or manual |
| Standards | ISO 9001:2015, GB/DL/T design codes, third-party inspection on request |
Why buyers choose Huaneng Power Auxiliary Equipment for chimney door for steel mill
We quote within 24 working hours, keep a dedicated engineer on every project and never subcontract the critical welding and machining. That is why most of our revenue comes from repeat orders and maintenance shutdown programs.
- 24-hour quotation: sizing calculation, sealing concept and actuator recommendation included.
- Leakage performance: leakage rate below 0.5% with sealing air, 100% shut-off on request verified by factory acceptance testing before shipment.
- Material traceability: mill certificates archived per heat number, retrievable for 5 years.
- Retrofit capability: units dimensioned from site drawings, templates or measured flange positions.
- Qualified supplier: approved by Sinopec, PetroChina, China Guodian, China Datang, CNOOC and Chalco.
Steel mill applications
In steel mill duty the chimney door for steel mill works bi-directional isolation under high temperature and dust load. We size the shaft, bearings and actuator for the actual dust load and temperature of the duct, not just the nominal cross-section, because a gate that jams during a shutdown trip costs far more than the difference in purchase price. Critical welds are inspected 100% on the first unit and by sampling (AQL 1.0) afterwards.
How the project runs
- Send your enquiry — duct dimensions, media and temperature, or drawings of the existing installation.
- Engineering review — sizing, sealing concept, material selection and actuator proposal within 24 hours.
- Quotation — itemized fabrication, actuation, sealing-air system and packing cost.
- Drawing approval — GA and detail drawings issued for your sign-off before production starts.
- Fabrication & FAT — cutting, welding, machining and assembly, then leakage and torque testing witnessed by you or SGS/BV.
- Shipping & support — seaworthy wooden cases, export documentation, installation and commissioning guidance on site.
Related capabilities
Buyers sourcing chimney door for steel mill usually also review our Chimney Door capability, Steel mill manufacturing solutions and request a quote. Full dimensional and material documentation is available on request.
FAQ
Questions about Chimney Door for Steel Mill
What is the price of chimney door for steel mill?
Pricing depends on size, material and sealing class. Send us the duct dimensions, design temperature and pressure, and we will return a detailed quotation with material and fabrication cost breakdown within 24 hours. Replacement units for existing installations can be dimensioned from site drawings or photos.
What is the lead time for chimney door for steel mill?
Standard sizes ship in 15–25 working days after drawing approval; custom-engineered units typically need 20–30 days for custom-engineered units. Worldwide export packing and shipping are available.
Can you match our existing installation?
Yes. Most of our output is retrofit work: we dimension flue gas dampers, slide gates and silencers from site drawings, templates or measured flange positions, and supply mating flanges, expansion joints and sealing-air systems to match.
Do you support steel mill projects?
Yes. We supply steel mill operators with chimney door for steel mill units tested for leakage, actuator torque and sealing-air pressure, complete with commissioning support and spare sealing parts. Our qualifications cover Sinopec, PetroChina, China Guodian, China Datang, CNOOC and Chalco supplier systems.