A turnkey finishing line is the design and commissioning, as a single project, of a garment factory's ironing and form presses, ironing benches, steam boiler, vacuum and compressed air systems, power supply and line layout.

The investor receives the line ready to run; responsibility for design, installation, commissioning and training rests with the supplier. This guide was prepared by Malkan Machinery Corporate Communications for executives and technical teams who make investment decisions.

The value of the turnkey approach comes from how well the parts fit together. Even if machines bought separately work well on their own, insufficient steam flow, a narrow vacuum line or damp compressed air can slow the whole line.

Such problems are often noticed only after commissioning, and fixing them costs more than getting it right in the first investment.

This article builds its turnkey finishing line checklist around the concrete questions an investor should put to the supplier. Each section first explains the technical logic of the topic, then lists the questions to ask at the quotation and contract stage.

1. SCOPE: WHERE DOES TURNKEY START AND WHERE DOES IT END?

Scope of a turnkey finishing line.

The term turnkey finishing line can mean different things from one supplier to another. One quotation may include only the machines and the connections between them, while another may also cover the boiler room, piping, electrical panels and construction work. The first task is therefore to define the limits of the scope in writing.

For a turnkey finishing line, the responsibility model must be clear as well as the scope.

There is a big difference between a model in which a single contractor is responsible for the performance of the entire line and one in which each supplier is responsible only for its own equipment, especially when it comes to who intervenes when a fault occurs.

A practical method is to prepare a scope matrix. For each work item, a single table shows who will handle the design, the material, the installation and the approval; rows left empty foreshadow additional costs later.

Product-group-specific equipment should also appear as separate rows in the scope matrix: leather ironing machines for leather products, turning machines in jeans and denim production and the auxiliary equipment that completes the line are examples.

• Which work items are in the quotation, and which are left to the investor?
• Are the boiler room, steam and condensate piping, and vacuum and air lines in scope?
• Who is responsible for the main power supply, panels, cabling and grounding?
• What information will be provided for the floor, anchoring, ventilation and construction work?
• Will the project drawings and technical specification be submitted for the investor's approval?

2. CAPACITY PLANNING AND LINE BALANCE

The design of a turnkey finishing line starts not with a machine list but with a production target. The number of units targeted per shift, the product mix and the duration of each operation must be known before the right number of machines can be determined. Jackets, trousers, shirts and knitwear require different operation sequences and different times.

Line balance is set by the speed of the slowest station. If one press is slower than the others, products pile up in front of it while the stations behind it wait idle. In turnkey finishing line design, bottleneck stations are identified in advance and extra units are added at those points when necessary.

Capacity calculations must also consider the real working time within a shift. After breaks, model changes, initial warm-up and small stoppages are deducted, the full theoretical machine capacity can never be used; a turnkey finishing line calculation should show these losses openly.

The product mix will also change over time. If a turnkey finishing line built today for a single product group offers no flexibility when moving to different models, the life of the investment is shortened.

• What product mix and operation times is the capacity calculation based on?
• Which stations are the bottlenecks, and what solution is proposed for them?
• How can the line be rearranged when the product mix changes?
• By which test will the capacity target be verified at commissioning?

3. STEAM INFRASTRUCTURE: BOILER, DISTRIBUTION AND CONDENSATE

The boiler room is the center of the steam infrastructure.

Steam is the main energy source of a turnkey finishing line. Boiler capacity is calculated not by adding up the nominal values of all consumers but by taking the probability of simultaneous operation into account.

However, this simultaneity assumption must also cover the peak moments when the presses draw steam at the same time; otherwise pressure drops and the bucks do not heat sufficiently.

How steam carries heat is explained by the basic principles of thermodynamics.

The type of boiler is also a decision item. Electric boilers offer simplicity in installation and emissions but place a significant load on the electrical infrastructure at high capacities; fuel-fired boilers bring a chimney, a fuel line and different regulatory requirements. The choice should be evaluated together with energy prices and the facility's existing infrastructure.

In the distribution line, a separator is needed for dry steam, the correct pipe diameter against pressure losses, pressure-reducing valves for equipment working at different pressures, and steam traps for line drainage.

Because returning condensate to the boiler helps lower energy, water and treatment costs, it should be planned in the first stage of a turnkey finishing line project.

The location of the boiler room should also be planned in a turnkey finishing line project. A boiler far from the consumers increases line losses, while one that is too close can make maintenance access and safety distances difficult.

• What are the total and peak steam consumption in kg/hour, and what simultaneity was assumed in the calculation?
• On what basis were the boiler type, capacity and working pressure selected?
• Was the pressure loss along the line calculated, and where are the pressure reducers and separators?
• How will condensate be collected, and is its return to the boiler planned?
• What are the legal periodic inspection and examination requirements for the boiler?

4. VACUUM SYSTEM: CENTRAL OR INDEPENDENT?

Vacuum draws moisture and heat out of the fabric softened by steam and sets the form. Insufficient vacuum causes the product to lose its form on the hanger and stay damp at packing. For this reason, when a turnkey finishing line is designed, vacuum capacity is as decisive an item as steam.

There are two basic approaches. In an independent system, each machine has its own vacuum motor; installation is simple and a failure affects only that machine. In a central system, a single high-capacity unit feeds the whole line; energy and noise management can become easier with many machines, but line design becomes more critical.

When a turnkey finishing line is built with central vacuum, pipe diameters and line length determine whether the farthest machine receives enough vacuum. Water formed by steam condensing in the vacuum line must also be collected and drained; otherwise the fan or pump can be damaged.

• At what flow rate (m³/hour) and pressure value is the vacuum capacity defined?
• In the central system, was the vacuum level at the farthest machine calculated?
• How will condensation water in the vacuum line be separated and drained?
• What are the noise level and energy consumption of the vacuum unit?

5. COMPRESSED AIR: QUALITY CLASS AND DEW POINT

The compressor is the source of the compressed air infrastructure.

Pneumatic presses, automatic lids and control valves run on compressed air. Water, oil and particles in the air shorten the life of cylinders and valves, and in applications where air is blown onto the fabric, they create a risk of staining. Quality must therefore be defined in compressed air as well as quantity.

Compressed air quality is expressed internationally by the classes that the ISO 8573-1 standard defines for particles, water and oil. Water content is stated by the pressure dew point; refrigerated dryers and adsorption dryers reach different dew point levels. The required class should be selected according to the equipment manufacturer's recommendation.

Compressed air is one of the most expensive forms of energy in a facility, and leaks quietly enlarge this cost. In a turnkey finishing line project, compressor capacity, air tank volume and line pressure should be planned together with leak control.

• What are the total air consumption and working pressure of the turnkey finishing line?
• Which air quality class is targeted, and what are the dryer type and dew point?
• How are the filter group, water drainage and oil separation handled?
• What is proposed for leak control and for monitoring line pressure?

6. POWER SUPPLY AND ELECTRICAL INFRASTRUCTURE

Within a turnkey finishing line, installed power grows quickly with heaters, vacuum motors, compressors and, if there is an electric boiler, the boiler itself. However, the electrical infrastructure is sized not by installed power but by the real demand drawn at the same time.

Without this calculation, it cannot be said whether the facility's transformer and main panel capacity are sufficient.

Cable cross-sections should be selected considering voltage drop and heating. In lines that include frequency inverters and electronic control cards, harmonic effects and reactive power demand should also be evaluated; the compensation system must be compatible with this load.

The commonly referenced standard for the electrical equipment of machines is EN 60204-1. Grounding, residual current protection, emergency stop circuits and panel layout directly affect both safety and fault-finding time.

How the line behaves during power outages and voltage fluctuations should also be asked. For a turnkey finishing line, the safe restart of the boiler, the vacuum unit and the control systems when power returns should be defined by a written restart procedure.

• What are the total installed power and the simultaneous demand calculation, and is the existing transformer sufficient?
• Will the cable cross-section and voltage drop calculations be delivered?
• Were compensation and harmonic effects evaluated?
• To which standards are the panels and the machine electrical equipment prepared?
• Will the electrical diagrams and panel labels be included in the delivery documents?
• Is the restart procedure after a power outage defined?

7. WATER, TREATMENT AND WASTEWATER

Electrical panels form the power and control infrastructure of the machines.

The quality of boiler feed water determines the life of the steam system within a turnkey finishing line. Hard water forms a scale layer in the boiler and on heater surfaces; this layer reduces heat transfer and increases energy consumption.

The capacity of the water softener recommended for the facility should be selected according to the make-up water demand remaining after condensate return.

Water quality should be monitored not only at installation but throughout operation. When hardness and conductivity measurements, the regeneration schedule of the softener and boiler blowdown are managed together, the risk of scale and corrosion is kept under control.

Boiler blowdown and other hot discharges must be cooled to the temperature permitted by local regulations before being discharged to the sewer. A blowdown cooling tank or heat recovery may be needed at this point.

In feed water, not only hardness but also conductivity, pH and dissolved gases matter. Dissolved oxygen and carbon dioxide cause corrosion in the boiler and condensate lines; heating the feed water tank or a deaerator helps remove these gases. Target values are determined by the boiler manufacturer's water quality instructions.

• Has the hardness of the mains water been measured, and which softening solution is proposed?
• Which measurements and at what frequency are proposed for monitoring water quality?
• How will blowdown and hot discharges be cooled, and where will they be discharged?

8. LAYOUT, PRODUCT FLOW AND WORKING ENVIRONMENT

The layout of the machines must let the product move along the turnkey finishing line without going back. Unnecessary handling and waiting mean both labor cost and re-wrinkling of the pressed product. Hanger-based transport systems move the pressed product between stations without distorting its form.

The pressing area creates a high heat and humidity load because of steam and hot surfaces. If ventilation is insufficient, the working environment becomes harder, operator productivity falls and the finished product picks up moisture. This load should be included in the building ventilation design from the start, together with the turnkey finishing line project.

Ergonomics is also part of the layout. Table heights, pedal positions, product placement areas and walking distances determine whether the operator can keep the same pace throughout the shift.

In a turnkey finishing line layout, leaving room for future expansion is also important. Spare outlets on the steam, vacuum and air manifolds make it easier to connect a station added later without stopping the line for a long time.

• Does the layout plan show the product flow and handling distances?
• Has hanger transport or conveyor integration been proposed?
• Has the heat and humidity load of the pressing area been calculated, and is there a ventilation proposal?
• What do the ergonomic settings of the machines cover?

9. SAFETY, REGULATIONS AND DOCUMENTS

Project drawings and specifications are the basis documents of delivery.

Because a turnkey finishing line includes pressure equipment, hot surfaces and moving bucks, its safety requirements are extensive. In the European Union, Machinery Directive 2006/42/EC gives way to Machinery Regulation (EU) 2023/1230 from 20 January 2027.

If the investment schedule is close to this date, it should be asked under which regulation the machines to be delivered are certified.

Pressure vessels such as boilers and flash tanks are assessed under Pressure Equipment Directive 2014/68/EU and are subject to legal periodic inspections in operation. In Türkiye, these inspections are carried out under the Regulation on Health and Safety Conditions in the Use of Work Equipment.

Declarations of conformity, user manuals and maintenance instructions are an integral part of the delivery documents.

Measures such as two-hand control, emergency stop, protective barriers and hot surface warnings are evaluated according to machine type. The risk assessment made for the whole line is a reminder that each machine being safe does not mean the line is safe.

• Under which regulation were the machines' declarations of conformity and CE marking made?
• Which documents will be delivered for pressure vessels?
• Will the user and maintenance manuals be provided in the operators' language?
• Has a risk assessment been made for the turnkey finishing line as a whole?

10. PROJECT SCHEDULE, CONTRACT AND CHANGE MANAGEMENT

A turnkey finishing line project runs on a work program made up of design, manufacturing, shipment, installation, commissioning and training stages. The durations of these stages and their dependencies should be shown in a written schedule. Work that is the investor's responsibility, such as building preparation or energy applications, should be in the same schedule.

Tying the payment plan to the project stages balances the interests of the parties. Tying the final payment to the successful completion of the site acceptance test is a common approach. The provisions to be applied in case of delay and the definition of force majeure should also be stated clearly in the contract.

As the project progresses, scope changes may come up, such as a new product group, an extra station or a layout change. A change management process in which every change goes through a written request, its cost and time impact, and approval steps prevents disputes that might arise later.

Until the turnkey finishing line is delivered, it should also be clear who carries the shipment and installation risks. Responsibility for transport insurance, protection of equipment on site and damage that may occur during installation is defined together with the delivery terms and contract provisions. It is recommended that the contract provisions be reviewed together with legal counsel.

• What is the project's work program, and are the investor's responsibilities shown in the schedule?
• To which delivery and test steps are the payment stages tied?
• How were delay and force majeure provisions defined?
• Through which process will scope changes be approved?
• Who bears responsibility for shipment and installation risks, and who holds the insurance?

11. COMMISSIONING, ACCEPTANCE TESTS AND TRAINING

Factory and site acceptance process diagram.

A turnkey finishing line should be considered accepted only when it shows the performance defined in the contract. For this reason, acceptance criteria are set in writing at the contract stage: hourly capacity, pressing quality, steam and energy consumption, noise and safety functions come first.

The acceptance process generally runs in two stages. In the factory acceptance test, the machines are operated at the supplier's facility; in the site acceptance test, the line is tried with real product at the investor's facility. Using the investor's own products in the tests is important so that the results reflect reality.

Delivery documents and training are the basis of long-lasting use of the turnkey finishing line. As-built drawings, piping and electrical diagrams, recipe lists and the maintenance plan should be delivered in full; separate training should be planned for operator, maintenance and management teams.

Recipes should also be created during commissioning. When steam time, pressure, temperature and vacuum time are tested and recorded for each product group, the turnkey finishing line reaches uniform quality faster and the dependence of the result on the operator decreases.

• Were the acceptance criteria and test method defined in the contract?
• With which products will the factory and site acceptance tests be performed?
• Which delivery documents will be provided?
• How many days will operator and maintenance training last, and who will it cover?

12. MAINTENANCE, SPARE PARTS AND TECHNICAL SERVICE

When one station stops in a turnkey finishing line, the entire flow behind it is affected. The speed of service support and the availability of spare parts are therefore as important as machine performance. Heaters, gaskets, solenoid valves, buck covers and sensors are among the most frequently replaced parts.

The recommended spare parts list for a turnkey finishing line should be prepared together with commissioning, and critical parts should be kept in the facility's stock. The planned maintenance calendar should cover trap tests, filter changes, cover renewals and calibrations.

The sharing of maintenance responsibilities should also be written. A maintenance contract in which the operator handles daily cleaning and checks and the supplier handles periodic and specialist maintenance helps the turnkey finishing line keep the same performance after the warranty period ends.

Remote monitoring and fault logging also affect service quality. When the control systems of a turnkey finishing line record the alarm history, the service team can narrow down the source of a fault before coming on site.

• Which are the critical spare parts, and what are their lead times?
• How far is the service network from the facility, and how is the response time defined?
• What are the scope and duration of the warranty, and are consumables covered?
• Will the planned maintenance calendar and maintenance record forms be delivered?

13. TOTAL COST OF OWNERSHIP AND PAYBACK CALCULATION

Quotations are often compared on purchase price, yet the real cost of a turnkey finishing line arises over its operating life. Total cost of ownership includes the investment, energy, water and treatment expenses, maintenance and spare parts, labor and possible downtime losses together.

There is no single general figure for the payback period. The result varies with current labor and energy costs, the actual capacity utilization of the line, the product mix and the scrap rates. The investor should therefore ask the supplier for a calculation based on the investor's own data with its assumptions clearly written.

In the calculation, measurable values should be used for energy consumption instead of the nominal values in the machine catalog. Verifying the same values with meters after commissioning both tests the supplier's commitment and gives the facility's energy management a solid starting dataset.

Energy and water efficiency measures are also part of this calculation. Condensate return, good insulation, control of compressed air leaks and putting unused stations into standby mode are items that lower operating cost for the whole life of the turnkey finishing line.

• Which items are included in the total cost of ownership calculation?
• What are the assumptions of the payback calculation, and whose data is it based on?
• Under what conditions were steam, electricity, water and air consumption measured?
• How will the consumption values be verified after commissioning?

14. Conclusion: the right questions for a turnkey finishing line investment

A turnkey finishing line brings the machines and the infrastructure that feeds them under a single responsibility. The value of this approach emerges only when topics such as scope, capacity, steam, vacuum, compressed air, power and water are defined clearly at the quotation stage.

Every question the investor asks means solving in advance a problem that might arise later. When acceptance criteria, delivery documents and service terms are written into the contract, the investment stays predictable in the years after the purchase date.

Malkan Machinery has produced ironing systems for the garment and ready-to-wear industry since 1971 and exports to 95 countries. Steam boilers are also part of the company's product range.

Malkan Machinery's participation in CAITME 2026 is covered in a separate article.

Under its strategic partnership with Germany-based Indupress, Malkan Machinery develops turnkey plant projects that cover steam and condensate, vacuum, compressed air and power supply lines. Ironing and form presses, tunnel finishing systems and pressing bucks are planned in these projects together with the infrastructure.

15. Frequently Asked Questions (FAQ)

What is the difference between a turnkey finishing line and buying machines separately? With separate purchases, machines and infrastructure come from different suppliers and the responsibility for compatibility stays with the investor. In the turnkey model, responsibility for design, installation, commissioning and performance sits with a single party.

What information should be prepared first before investing? The target number of units per shift, the product mix and the facility's existing steam, power and water infrastructure are the first data to prepare. Without them, capacity and infrastructure cannot be calculated correctly.

Should central vacuum or per-machine vacuum be preferred? As the number of machines grows, a central system can offer advantages in energy and noise management, but line design becomes critical. With few machines, or in lines needing a flexible layout, per-machine vacuum is more practical.

Why does compressed air quality matter? Damp and oily air shortens the life of pneumatic cylinders and valves and creates a risk of stains in applications that touch the fabric. The required quality class and dew point should be set according to the equipment manufacturer's recommendation.

How is the payback period calculated? The investment amount is divided by the annual net savings in labor, energy, water and scrap. For the result to be reliable, the calculation should use the company's own data and clearly written assumptions.

Does Malkan Machinery carry out turnkey finishing line projects? Yes; under its strategic partnership with Indupress, Malkan Machinery designs steam, vacuum, compressed air and power lines together with the machines. The project is shaped by the company's product mix and capacity target.

Which documents should be received after commissioning? After a turnkey finishing line is commissioned, declarations of conformity, user and maintenance manuals, as-built drawings, electrical and piping diagrams and the spare parts list should be received. Documents and periodic inspection information for pressure vessels should also be in this file.