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In modern industrial safety protection systems, Trapped key interlocking is widely used in power, petrochemical, rail transit, machinery manufacturing and other industries due to its high reliability and anti-misoperation characteristics. As enterprises continue to pay more attention to operational safety, the demand for trapped key interlocking has increased year by year, and price has become one of the core factors that users pay attention to. So, what factors affect the price of trapped key interlocking? This article will analyze it in depth from multiple dimensions.

1. System composition complexity

The trapped key interlocking system can be from the simplest single-point control lock to a complex system with multiple points and logical linkage. Its complexity directly affects the system price.

2. Material selection

Trapped key interlocking usually uses the following materials, and choosing different materials will directly affect the product price:

Stainless steel (such as 304/316): Strong corrosion resistance, often used in chemical or humid environments, and has a higher price.

Aluminum alloy: Low cost, light weight, suitable for non-extreme working conditions.

Brass or nickel-plated copper alloy: moderate price, strong stability, often used in general industrial scenarios.

The choice of materials directly determines the production cost, especially when used in extreme environments, it is often necessary to use materials that are resistant to high temperatures and corrosion, which leads to an increase in overall costs.

3. Brand

International brands often have a higher brand premium due to their mature application cases and strong after-sales system in the global market. Correspondingly, their technical services, application support, and customized response speed are also the added value behind the price.

4. Degree of customization

Whether customization is needed is one of the key factors that determine the price. Standardized products can be delivered quickly and at low cost. The customized solution involves the following:

Customized key coding system;

Non-standard shell structure;

Complex operation sequence configuration;

Customer-specific serialization management system.

Customized projects require more design costs and production time, and the prices are generally higher. If the customer has special requirements for the key interlocking sequence and action flow, the manufacturer needs to write additional logic drawings and conduct prototype tests. These services are often charged on a project basis.

5. Certification level

If the trapped Key Interlocking system needs to pass specific international safety certifications (such as SIL3, CE, ATEX, etc.), the manufacturer needs to provide test reports, verification documents and safety statements, which will greatly increase production costs.

Non-certified products: cost-effective, suitable for low-risk areas;

With SIL2/SIL3 certification: price increase of 20%-50%;

Special industry certification (such as coal mines, explosion-proof areas): additional equipment modification is required, and the cost doubles.

6. Application industry and use environment

The more complex the use environment, the higher the requirements for the interlocking system. For example:

Offshore wind power, chemical plants: need to have anti-corrosion and explosion-proof capabilities;

Steel and metallurgical plants: need to withstand high temperatures and strong earthquakes;

Food and pharmaceutical plants: require stainless steel materials, easy to clean, waterproof and dustproof.

These special requirements directly raise the raw materials, design structures and testing standards, and prices also rise accordingly.

7. Supply chain and inventory situation

In recent years, fluctuations in the global manufacturing supply chain have led to shortages of many precision parts, including lock cylinders, key blanks, non-standard castings, etc. If the supply is not smooth and the cycle is prolonged, manufacturers usually raise prices to protect profits.

In addition, if customers require delivery in a short time, some manufacturers need to enable expedited customization services, and the additional emergency processing fees will also affect the final quotation.

The formation of the price of the trapped Key Interlocking system involves multiple dimensions, from system design to material selection, brand positioning, to industry certification and use environment, each factor affects its cost. As a safety control system with "accident prevention" as its core concept, its value cannot be measured only by price. When purchasing, enterprises should put "safety, stability, and controllability" first, and formulate the most cost-effective solution in combination with project requirements while ensuring safety.

If you need a customized solution for trapped key interlocking based on specific working conditions, control processes or security level requirements in actual applications, please feel free to contact us. As a professional trapped key interlocking supplier, we can provide you with safe and reliable customized solutions that meet international standards to help your project run efficiently, safely and in compliance with regulations.

http://www.nudango.com
Shanghai Nudango Safety Equipment Co., Ltd.

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