Inspection Standard for Auto Duct Production Line 2

Durmapress recently welcomed a delegation from Mongolia, marking their first visit as a new client specializing in construction and HVAC equipment. Their visit focused on evaluating our metalworking machinery, including the metal shearing machine, angle iron roller, 3-inch duct production line, press brake, and fiber laser cutting machine.

Client Background & Objectives

The Mongolian client, a key supplier of 3-inch ducts and structural components for infrastructure projects, sought equipment to enhance production efficiency. Their goals included:

– Testing metal shearing machines for cutting thick steel plates.

– Evaluating angle iron rollers for shaping 3-inch duct supports.

– Verifying fiber laser cutting machines for precision sheet metal processing.

Outer Mongolia customer visit(1)
Outer Mongolia customer visit(7)

Factory Tour Highlights

In addition, the customer showed great interest in our angle iron roller, which is perfect for forming angle irons used in construction and industrial applications. We demonstrated how it smoothly bends various metal profiles with minimal deformation.

The customer also reviewed our capabilities in fabricating 3 inch ducts, which are commonly used in HVAC systems. Our machines ensure high precision and airtight seams, which are essential in ductwork production.

Of particular note was the demonstration of our high-precision press brake, which features multi-axis control and user-friendly programming. This machine is capable of handling complex bending tasks with repeatable accuracy.

Finally, our Fiber Laser Cutting Machine was presented in action, cutting through stainless steel and carbon steel sheets with clean edges and high speed. The customer was impressed with its performance and ease of operation.

– Verifying fiber laser cutting machines for precision sheet metal processing.

Outer Mongolia customer visit(4)
Outer Mongolia customer visit(5)

On-Site Order & Client Feedback

After in-depth discussions and hands-on evaluation, the Mongolian client expressed strong confidence in the quality of Durmapress equipment and decided to place an order immediately. This included multiple machines tailored to their production needs.The client placed an immediate order for:

– 2 units of 6x2500mm metal shearing machines.

– 1 angle iron roller system optimized for 3-inch ducts.

– 1 fiber laser cutting machine (3000W).

At Durmapress, we are committed to building strong international partnerships and providing reliable solutions for sheet metal processing. We thank our Mongolian guest for their trust and look forward to supporting their production goals.

Outer Mongolia customer visit(6)

First, let’s take a look at what a complete air duct production line should do.

The first is the material selection and blanking function; then: compaction, leveling function; punching and grooving function; cutting function; transmission function; bite function; TDF flange forming; and bending forming. The duct production line can basically be defined as the entire process of duct forming is done by one or more machines. The entire process does not require anyone to participate.

Because the ventilation pipe production line has become an indispensable product in many industries, it is a very important question whether the quality of the second-line air duct production is qualified. What kind of inspection standards do we have?

1. It is required to have enough airtight pipe joints. All the welded joints of the pure system’s air ducts, fittings, parts and elegant and elegant must be very strict; the inner surface of the pure air duct is required to be smooth, and the joint is prohibited. And a reinforcement device inside the tube.

2. The air duct bite, must be tight, uniform width, no holes, half bite and expansion cracks and other defects. Straight longitudinal seam staggered angle; duct appearance, flat, round uniform, parallel to two planes, no obvious warp angle, convex surface not more than 10mm; air duct and flange fixed connection, flange is basically flat, close to flange width no less than 6mm.

3. It is necessary to ensure that the welding of the various components in the process of welding is firm, no screw holes are provided at the welded joints, and there is no damage on the surface of the composite steel duct.

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