Coiled tubing is a continuous length of pipe wound on a spool, which is later straightened prior to entering the wellbore.

From standard well-workover and velocity/production strings for logging, drilling and special application strings with factory-installed wire-line, capillary tubes to integral tools, Tenaris produces continuous coiled tubing in lengths suitable for the most challenging downhole environments.

We offer coiled tubing in a variety of grades and sizes, including:

Grades:
HS-70™
HS-80™
HS-90™
HS-110™

Sizes:
O.D.: 1” through 5”
    
Walls:
0.080” through 0.300

Source - http://www.tenaris.com/en/Products/CoiledTubing.aspx

Tenaris

Houston-based Tenaris is one of the leading suppliers of tubes and related services, catering to numerous industries including energy, power and others. With a mission to deliver value to its customers by the means of product development, manufacturing excellence, and supply chain management, Tenaris has been committed to deliver quality products and services to its clients. With a dedicated workforce of 25,500 people employed across 25 nations, Tenaris serves to most of the world’s major oil and gas firms, apart from the engineering companies.