What are Welded and Seamless Pipes (SCH)?

Importance of Choosing the Right Pipe in Industrial Systems

Pipes used in industrial gas, steam, hydraulic, and process lines play a critical role in the safety and efficiency of the system. Welded and seamless pipes (SCH – Schedule) refer to industrial pipe standards classified by wall thickness and manufacturing method. UK Teknik provides pipe supply, installation, and technical service for industrial furnaces, burners, and process systems.

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What are Welded and Seamless Pipes (SCH)?

SCH (Schedule) is a standard that indicates the wall thickness of the pipe. Welded and seamless pipes are distinguished by their manufacturing method.

• Welded pipe: Produced by welding sheets into a pipe
• Seamless pipe: Produced by drawing from a single piece of steel

Their main functions are:

• To transport fluids
• To provide high pressure resistance
• To ensure industrial line safety

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What is SCH (Schedule)?

The SCH value indicates the wall thickness of the pipe. For example:

• SCH 10 → low pressure systems
• SCH 40 → medium-level industrial use
• SCH 80 → high pressure systems

As the SCH value increases, the pipe thickness and durability increase.

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Welded Pipe Features

• More economical production
• Use in medium pressure systems
• Has a weld seam
• Suitable for general industrial applications

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Seamless Pipe Features

• High pressure resistance
• Seamless production
• More homogeneous structure
• Use in critical systems

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Application Areas of Welded and Seamless Pipes

These pipes are used in many industrial systems:

• Industrial gas lines
• Burner and combustion systems
• Heat treatment furnaces
• Hydraulic systems
• Process lines
• Steam boilers

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Advantages and Differences

Advantages of Welded Pipe

• Lower cost
• Easy availability
• Sufficient for general use

Advantages of Seamless Pipe

• High security
• High pressure resistance
• Ideal for critical systems

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Pipe Failures and Risks

Various problems can arise from incorrect selection or use:

Welding Defects (Welded Pipe)

• Weak points may form

Pressure Burst

• Risk increases if a low SCH value is chosen

Corrosion

• Chemical environment effect

Crack Formation

• Thermal and mechanical stress

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Importance of Maintenance and Inspection

If regular inspections are not performed:

• System safety decreases
• Risk of leaks increases
• Production downtimes occur

With regular inspections:

• Line safety is ensured
• Risk of failure decreases
• System life is extended

During maintenance processes:

• Pressure testing
• Visual inspection
• Weld inspection
• Leak testing

must be performed.

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How to Choose the Right Pipe?

Pressure Value

• System operating pressure must be determined

SCH Level

• SCH 40 / SCH 80 selection must be made

Environmental Conditions

• Temperature and chemical effects must be evaluated

Purpose of Use

• Gas, steam, or liquid line

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UK Teknik Pipe System Solutions

UK Teknik provides for industrial facilities:

• Supply of welded and seamless pipes
• SCH pipe system design
• Installation and welding services
• Technical service and maintenance

It offers.

With the right pipe selection, system safety is maximized.

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Why Should You Work with UK Teknik?

Industrial line systems are the backbone of a facility.

UK Teknik:

• Industrial engineering experience
• Correct material selection
• Professional installation support
• Fast technical service

provides a safe infrastructure for businesses.