When you start looking into production optimisation, you will quickly come across the concepts of push flow and pull flow. These two concepts are at the heart of many production strategies, particularly within the framework of Lean Manufacturing, and understanding them is essential for choosing the method best suited to your company. In this article, we explain the differences between these two approaches, their advantages and drawbacks, and the cases where adopting a hybrid strategy may be the best solution.
What is Push Flow?
The push flow is a production approach in which products are manufactured before a customer order has even been placed. In other words, production is planned on the basis of sales forecasts, and goods are produced in anticipation of future demand. This system works like classic series production, often used for standardised goods where demand is relatively stable.
The Advantages of Push Flow
- Shorter delivery times : One of the main strengths of push flow is that it allows customers to be supplied quickly, since the products are already manufactured. The result is improved customer satisfaction, which can provide a competitive advantage.
- Production à grande échelle : By anticipating demand, companies can mass-produce, which can generate economies of scale. This often translates into lower unit costs, particularly for standard products.
- Process control : Push flow allows stricter control of production processes, since everything is planned in advance, which can contribute to better coordination of teams and machines.
The Disadvantages of Push Flow
- Overproduction : The main drawback of push flow is the risk of overproduction. If demand is misjudged, the goods produced may not sell, resulting in high storage costs and potential financial losses.
- Storage costs : Producing goods before they are sold requires space to store goods awaiting orders. Inventory management, space rental and handling costs can add up quickly.
- Risk of obsolescence : In an environment where consumer trends and preferences change rapidly, stored products can become obsolete before they are even sold, leading to additional financial losses.
What is Pull Flow?
In contrast to push flow, the pull flow (often associated with the Kanban method) is a production method based on actual demand. In this model, products are only manufactured once an order has been placed. This is "make-to-order" production, meaning there is no unnecessary stock to manage.
The Advantages of Pull Flow
- Little or no stock : One of the greatest advantages of pull flow is the absence of stock. This considerably reduces inventory management costs and allows the company to save on storage space costs. Less stock also means less waste, since all the products manufactured are already sold.
- Reduced financial risk : As products are only manufactured when an order is received, there is less risk of overproduction or product obsolescence. This minimises the financial losses associated with unsold goods.
- Greater flexibility : Pull flow is ideal for companies offering customised products or personalisation options. It makes it possible to respond precisely to customers' specific requirements, thereby improving customer satisfaction.
The Disadvantages of Pull Flow
- Longer delivery times : The pull flow has one major drawback: delivery times can be longer. Since products are only manufactured after an order is received, the customer will have to wait longer to receive their product. This can affect customer satisfaction, especially if delivery speed is a differentiating factor in your sector.
- Capacité de production : In periods of high demand, pull flow can put considerable pressure on a company's production capacity. If demand exceeds production capacity, delays can occur, which can damage the company's reputation.
- Less suited to standardised goods : Pull flow is less effective for standardised products or those with very stable demand, as it does not take advantage of the economies of scale achieved through mass production.
Which Method Should You Choose: Push Flow or Pull Flow?
The choice between push flow and pull flow depends on several factors, including the nature of the products you manufacture, the variability of demand and your company's ability to manage stock.
Push Flow is Ideal for:
- Companies that manufacture standardised products with predictable demand.
- Companies for which delivery speed is a key competitive advantage.
- Companies with the financial and logistical means to manage large stocks.
Pull Flow is Ideal for:
- Companies offering customised products or made-to-measure options.
- Companies seeking to optimise their costs by reducing stock levels.
- Companies operating in markets where demand is uncertain or highly variable.
The Hybrid Push-Pull Strategy
In some cases, neither method perfectly matches a company's needs. The answer is then often a hybrid strategy, which combines the advantages of both approaches. For example, some companies choose to hold an intermediate stock of semi-finished products. This allows them to reduce delivery times while maintaining a degree of control over stock levels.
This hybrid method allows companies to reduce the risk of overproduction while enjoying greater flexibility to meet customer demand. By anticipating certain production stages (for example, by partially assembling products), they can strike the right balance between the advantages of push flow and those of pull flow.
This hybrid approach is also close to the concept of just-in-time flow, which aims to minimise stock while maintaining production continuity.
The choice between push flow and the pull flow depends on many factors specific to your company and your market. If your demand is stable and predictable, push flow can help you maximise delivery speed and achieve economies of scale. If, on the other hand, your company offers personalised products or you wish to reduce storage costs, pull flow is probably more suitable.
To go further, find out how to optimise your supply chain or how our consultants can support you as a industrial supply chain consultant.
If you need help implementing a production strategy suited to your needs, SXE-Consulting can support you in putting effective processes in place, whether push flow, pull flow or a hybrid strategy. Contact us for a personalised consultation.
Xavier Schuster
Consultant at SXE Consulting. Industrial consulting firm based in Luxembourg, 25 years of experience in operational excellence.
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