At Dauji Engineering, continuous improvement & quality assurance is of foremost importance to us.
At Dauji Engineering, we deliver high-quality components that meet the required quality standards. Our commitment to quality starts from sourcing and extends through design, manufacturing, and final inspection.
We maintain rigorous quality control processes to ensure dimensional accuracy, corrosion resistance, and material integrity — making us a trusted supplier to global filtration system manufacturers.
At Dauji Engineering Limited, we are committed to producing high-quality filter components that meet the highest industry standards. Our quality assurance process ensures that every filter component delivers optimal performance, reliability, and longevity in even the most demanding environments.
Below are the key elements of our quality assurance strategy:
Each component is individually tested for quality by certified Quality control team.
We source only premium-grade virgin raw materials, and thickness & grade is carefully selected to meet the application requirements.
All of our material suppliers are carefully tested and certified to meet international quality standards. All premium grade materials are mill certified or 100% lab tested.
We utilize state-of-the-art manufacturing equipment and the latest technology to ensure precision in the manufacturing of components. This includes automated CNC machines, top quality moulding and extension machine, and laser cutting to guarantee consistent product quality.
Our manufacturing processes are designed to minimize waste, and we actively work to reduce our carbon footprint. CBAM reporting is available for Eurozone countries.
The manufacturing environment is closely monitored for temperature, humidity, and cleanliness to maintain product integrity, especially when handling sensitive filter media.
We test the filtration media for particle retention efficiency at various particle sizes (e.g., PM2.5, PM10) to ensure effective dust capture.
Filters are tested for pressure drop across the media to ensure they meet specified airflow and energy efficiency requirements.
Each filter undergoes burst strength testing to ensure it can withstand high-pressure conditions without failure.
For filters used in extreme environments, we conduct tests to ensure resistance to heat, humidity, and chemical exposure.
We evaluate the dust holding capacity of our filters to ensure they perform effectively over extended periods, minimizing the need for frequent replacements.
The UTM machine is utilised to perform a range of mechanical tests on materials, particularly to evaluate their behaviour under different stress conditions. The tests include:
It is used to measure how a material reacts to forces that attempt to elongate it. The machine pulls the material until it breaks, measuring parameters like ultimate tensile strength, yield strength, and elongation at break.
It is used to measure the material’s response to compressive forces.
It is used to measure the flexural strength of materials. The machine measures how much force the material can withstand before failure.
Measures the material's ability to withstand shear forces, determining its shear strength.
Determines how a material behaves under repeated loading cycles, simulating the conditions materials would face during regular use, such as in machinery parts or structures.
It is done to test the ability of a material to deform under tensile (stretching) stress without breaking. It is typically expressed as a percentage increase in length relative to the original length of the material and is an important indicator of ductility.
We conduct regular internal quality audits to ensure compliance with our strict manufacturing and testing protocols.
Feedback from clients, combined with regular product reviews, drives our commitment to continuous improvement. Our R&D and QA teams collaborate to refine existing products and develop new, innovative filtration solutions.
We are committed to using environmentally responsible materials where possible, and our filters are designed to be energy-efficient, contributing to lower operational costs for end users.
Our manufacturing processes are designed to minimize waste, and we actively work to reduce our carbon footprint. (BAM reporting is available for Eurozone countries.
We procure raw materials exclusively from reputed sources like TATA Steel and SAIL, ensuring consistent quality and compliance with national and international standards.
All materials are supported with Mill Test Certificates (MTCs) indicating grade, batch, chemical composition, and mechanical properties.
All plated components undergo testing with calibrated coating thickness gauges
Plating types include zinc, nickel, or chrome, tailored to client specs
Our technical support team is available to assist with installation, troubleshooting, and maintenance to ensure optimal performance over the lifetime of the product.
A salt spray test, also known as salt fog test is done to evaluate the resistance of materials and coatings to corrosive environments. It involves exposing samples to a fine mist of a salt solution, typically sodium chloride, in a controlled chamber.
Ensures long-term corrosion protection, especially for export-grade components
Dimensional inspections carried out using vernier calipers, micrometers, plug & ring gauges, thread gauges, and height gauges
Components inspected as per technical drawings and tolerance requirements
Random or 100% inspection based on criticality and client guidelines
Supplied with every order upon request
Includes chemical and mechanical property confirmation from the source mill
We also supply mill Test Certificates as & when required.
All our plastic components are manufactured from 100 % Virgin Polymers ensuring excellent quality in each component we manufacture.
Our manufacturing processes are designed to minimize waste, and we actively work to reduce our carbon footprint. CBAM reporting is available for Eurozone countries.