Indian on-Site Report of Huichengsheng's Stainless Steel Long Tube Bright Annealing Furnace

In the global industrial equipment supply chain, Foshan Huichengsheng Furnace Industry Co., Ltd. has successfully delivered a production line of stainless steel long tube bright annealing furnaces to a large Indian metal processing enterprise, leveraging its technological prowess and customized service capabilities. Centered around a continuous gas-shielded bright annealing process, this production line addresses key pain points such as oxidation susceptibility and inconsistent surface quality during the annealing of long tubes, serving as a benchmark case in Sino-Indian industrial cooperation.

I. Project Background: Indian Client's Demand for Technological Upgrades

The Indian client is a leading local manufacturer of metal pressure vessels, with products widely applied in petrochemical, energy, and other sectors. As international market demands for corrosion resistance and surface finish of pipeline materials have increased, the client urgently needed to upgrade its traditional annealing equipment to achieve:

Oxidation-free annealing of long tubes (6-12 meters) to reduce subsequent polishing processes;

Temperature uniformity control to prevent tube bending and deformation;

Continuous production to boost capacity to 200 tons per month.

II. Huichengsheng's Solution: Continuous Gas-Shielded Bright Annealing Furnace

In response to the client's needs, Huichengsheng designed a steel belt conveyor-type bright annealing furnace with the following core configurations:

Heating System:

Utilizes imported nickel-chromium alloy electric heating elements with independent three-zone temperature control (preheating, heating, and holding zones), covering a temperature range of 200-1050°C with a precision of ±1°C.

Ceramic fiber modules are installed on the inner furnace walls to minimize heat loss, achieving a 25% energy savings rate.

Gas Protection System:

Equipped with an ammonia decomposition unit to convert liquid ammonia into a mixed gas of 75% hydrogen and 25% nitrogen, which is injected into the furnace through pipelines to create an inert atmosphere and prevent tube oxidation.

Intelligent gas flow regulation ensures an oxygen content in the furnace of ≤10 ppm.

Drive System:

The steel belt conveyor speed is infinitely adjustable from 0.1-3 m/min to accommodate different tube diameters (Φ20-Φ300 mm) and lengths.

A deviation correction device ensures stable steel belt operation to prevent tube scratches.

Cooling System:

PLC-controlled water overheating and water shortage alarms, with each section monitored by a water pressure transmitter that triggers an alarm in case of water shortage.

Each water tank is equipped with a temperature transmitter for real-time monitoring of circulating water temperature.

III. Highlights of On-Site Implementation for the Indian Client

Modular Installation for Shorter Commissioning Time:

The equipment features a split design, allowing assembly in just 7 days after sea freight to India, improving installation efficiency by 40% compared to traditional furnace bodies. During the commissioning phase, Huichengsheng's engineering team provided remote video guidance and on-site practical training to help the client's technicians quickly master operational essentials.

Intelligent Control to Lower Operational Barriers:

The furnace is equipped with a Siemens PLC control system that integrates real-time monitoring of parameters such as temperature, gas flow, and drive speed. The operational interface supports multilingual switching (including Hindi), enabling clients to remotely monitor production data via a mobile app.

IV. Client Feedback and Industry Impact

After the project went into operation, the Indian client's project leader stated, "Huichengsheng's equipment has reduced our tube surface roughness from Ra3.2 μm to Ra0.8 μm, increased the first-pass yield rate to 99.2%, and directly cut polishing costs by 20%." Currently, the production line has been running stably for 8 months, processing an average of 220 tons of tubes per month, exceeding the designed capacity by 10%.

This case has drawn attention in India's metal processing industry, with representatives from multiple companies visiting the site for inspections and initiating discussions with Huichengsheng about similar equipment procurement. According to industry analysts, with increased infrastructure investment in India, demand for high-end tubes is expected to continue growing, offering significant potential for Huichengsheng's bright annealing technology to expand further in the South Asian market.

V. Huichengsheng's Technological Expertise and Service Advantages

As a national high-tech enterprise, Huichengsheng Furnace Industry has deeply cultivated the heat treatment field for 15 years, holding 9 utility model patents. Its core team boasts an average of over 20 years of industry experience. The company not only provides standardized equipment but also excels at customizing solutions based on clients' process requirements, such as:

Designing continuous bright annealing furnaces for titanium alloy tubes;

Developing continuous atmosphere-protected brazing furnaces for automotive exhaust pipes;

Offering bright quenching furnace services for the medical device industry.

Conclusion

Foshan Huichengsheng Furnace Industry Co., Ltd. has successfully broken through geographical barriers by combining technological innovation with localized services, introducing China's high-end heat treatment equipment to the international market. The implementation of this Indian project not only validates its technological strength but also provides a model "efficient, energy-saving, and intelligent" annealing solution for the global metal processing industry. Looking ahead, Huichengsheng will continue to adhere to its philosophy of "quality first, service supreme," empowering more enterprises to achieve industrial upgrades.

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FOSHAN HUICHENGSHENG FURNACE INDUSTRY CO,.LTD

Add. No 4, Building B, No. 9 , Xingbai Road, Xiabo Third Industrial Zone, Luo Village, Shishan Town, Nanhai District, Foshan City, Guangdong Province, China

Tel.:+86 757-82580269 

Mobile / Whatsapp / Wechat :+86 133 183 53285 

Email: heattreatmentspecialist02@chengshengindustry.com 

Website: www.chengshengindustry.com / www.hcsfurnace.com