Glossary of Technical Terms Used in Safety Training & Awareness: Non Marking Slips

Non Marking Slips

Non-Marking Slips: Protecting Your 13Cr Pipeline Investment

In the demanding world of oil and gas, protecting your investment is paramount. One critical area of focus is ensuring the integrity of your 13Cr pipe, a popular choice for its strength and corrosion resistance. However, the unique properties of 13Cr make it susceptible to marking during handling, potentially compromising its performance. This is where non-marking slips play a crucial role.

What are Non-Marking Slips?

Non-marking slips are specialized tools used in conjunction with make-up tongs. Unlike standard slips, these are specifically designed to avoid leaving any marks or dents on the surface of 13Cr pipe during the critical make-up and break-out processes.

Why are they Essential for 13Cr Pipe?

13Cr pipe is known for its exceptional strength and resistance to corrosion, making it ideal for high-pressure and high-temperature applications in the oil and gas industry. However, its hardened surface is also prone to damage from conventional slips during handling.

Marks left by standard slips can:

  • Compromise the integrity of the pipe: Indentations and scratches create stress points, potentially leading to premature failure under pressure.
  • Reduce the lifespan of the pipe: Surface damage can accelerate corrosion, shortening the overall lifespan of the pipeline.
  • Increase the risk of leaks: Cracks or weakened areas can lead to leaks, posing a serious safety hazard.

How do Non-Marking Slips Work?

Non-marking slips employ a unique design to minimize contact and pressure on the pipe surface. Here are some common features:

  • Special materials: They are often made of softer materials like bronze or copper, which are less likely to mar the hard surface of 13Cr pipe.
  • Rounded edges: Slips are designed with smooth, rounded edges to distribute pressure more evenly and avoid sharp indentations.
  • Increased surface area: Some non-marking slips have a wider surface area, reducing the pressure exerted on the pipe at any given point.

Beyond 13Cr:

While non-marking slips are essential for protecting 13Cr pipe, they also offer benefits when working with other types of high-value or delicate piping.

Using Non-Marking Slips is an investment in:

  • Safety: Protecting the integrity of the pipeline ensures a safer working environment and minimizes the risk of leaks or accidents.
  • Longevity: Minimizing damage extends the lifespan of your pipelines, reducing the need for costly replacements.
  • Efficiency: By preventing premature failures, non-marking slips contribute to uninterrupted operations and increased productivity.

Choosing the Right Non-Marking Slips:

When selecting non-marking slips, ensure they are specifically designed for the type of pipe you are working with. Factors like pipe size, wall thickness, and material should be carefully considered. Consult with your supplier to choose the most appropriate slips for your application.

In conclusion, investing in non-marking slips for your 13Cr pipe is a crucial step in ensuring the safety, longevity, and efficiency of your oil and gas operations. By protecting your investment in premium pipe, you contribute to a more robust and reliable infrastructure, ultimately safeguarding both your business and the environment.


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