Slickline that Lasts

Leading Manufacturer in World-Class Slickline

Off Shore Slickline

Offshore or Onshore

We’ve got you covered

Oil and gas well conditions and environments can vary markedly from location to location. With eight material alternatives to choose from, our GD™-SUPA® slickline can handle the harshest of oil, gas, and geothermal conditions, both on land and undersea. We make weld-free austenitic, super austenitic, and duplex stainless steel slickline for onshore and offshore applications.

Confidence in Quality

We’re confident in our slicklines, and you can be too. Each slickline comes with a certificate of conformance that states physical and mechanical properties, including alloy chemistry and breaking load. Every line can be verified by an independent lab to EN10204 standards.

Quality Wireline and Cable

Quality Products

CWI’s stringent quality controls ensure traceability from wire rod to finished line. We manufacture with high-quality alloys to provide consistency and reliability. The reliability of our lines save money over time.



We seek to exceed our customers’ expectations with our personal service. We have even been known to drive directly into the field and deliver your order, hand to hand, truck to truck. With 60+ years experience with metals, we’re eager to help you find the best line for your purpose and environment.



Our numerous manufacturing plants in the U.S., Canada and the UK are each ISO 9001:2015 registered and certified under the newest versions of the respective QMS standards. We are committed to ensuring our customers receive a reliable and durable product.

Readily Available

Readily Available

Distribution centers around the globe allow us to get your wirelines to you quickly. We’re available when you need us: scheduled delivery or hot shot service. We maintain custom stocking programs to meet your exact demands. Your slickline will be there when you need it.

Our products are 100% weld-free.

Our Slickline

The CWI family of GD™ – SUPA® slickline is engineered for oil, gas, and geothermal applications. Our slickline is manufactured in North America and the United Kingdom from alloys designed to provide a continuous 30,000 feet (9144 m) weld-free, bright finish wireline. We have corrosion-resistant lines designed to go downhole in sour and sweet environments. CWI slickline are also suitable for measuring-line / wireline and electro-mechanical (EM) cable.

  • GD316 (UNS S31600)
  • GD22 / SUPA 40 (UNS S31803)
  • GD31Mo / SUPA 75 (UNS N08926)
  • GD35Mo (UNS N08028)
  • GD37Mo (UNS S31277)
  • GD39Mo / SUPA 80 (UNS N08031)
  • GD50 (UNS R30035)
  • GD100 (UNS S32760)
slicklines truck

Slickline Guidelines

To maximize the life of your CWI GD™-SUPA® slickline follow these guidelines:

  • Confirm the wire is suitable for the expected well conditions. CWI experts can help you determine that.
  • Use a Vernier Calliper to check the wire OD.
  • Use new packing in the stuffing box and change the wire guides if they show signs of excessive wear.
  • Use correct sized sheaves (rule of thumb – sheave diameter = 120 x wire OD.)
  • Always lubricate the wire when running into the well.
  • Never exceed the maximum allowed wire tension. This will be set at a maximum of 60% of the breaking load reported on your CWI issued test certification.
  • Clean the wire pulled from the well; use a wireline wiper to remove well fluids.
  • Always update the wire logbook with the wire cut-off and data from the operation.

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