Welded Subsea Downhole Seamless Stainless Steel Coils

Seamless & Weled Steel Control Line Tubings for downhole and subsea

Control lines usually are coiled tubes made of stainless steel, duplex stainless steel or nickle alloys. The coiled tubes mostly are welded & redrawn tubes or seamless cold drawn tubes. Control lines are usually supplied with very long continuous lengths coiled on the drums.Control Lines are widely used in many applications in the field of downhole and subsea. Tiptop supplies high quality control lines / control line tubing in stainless steels and nickel alloys. As the professional manufacturer of control lines, we can provide control line tubing with different materials such as stainless steel 316L, duplex stainless steel 2205, 2507, Nickel alloy 825 & alloy 625 and other materials upon customers’ request.

As one of the leading China control line manufacturer, we can supply full range of the popular control line sizes. Our control line tubing can be supplied in metric size and imperial size.

Outer Diameter (OD): 3 mm (0.118”) to 25.4 mm (1.00”)

Wall Thickness (WT): 0.5mm (0.020”) to 3mm (0.118”)

OD tolerance +/- 0.005” (0.13mm) , other tolerances are available on request

WT tolerance +/- 10%, other tolerances are available on request

Tubing Coil lengths up to 6,000m (20,000ft) without orbital joints depending on product dimensions and its form (seamless tube or welded tube).

Coil lengths up to 13,500m (45,000ft) with orbital joints.

Size Chart:

Chemical Composition:

With the leading direction of producing High pressure extra long stainless steel control line tube(stainless steel coiled tubes), TIPTOP has become a high-tech industrial company integrating domestic research and development, production and sales. The company successfully developed a series of stainless steel testing cables in 2000. In recent years, the company has been committed to the research and development of duplex steel and nickel alloy control lines, and has been widely approved in the international market.

The company covers an area of 20,000 square meters and a building area of 12,000 square meters. The company has several stainless steel tube production lines, tube making units, tube drawing units, well-type electric furnaces, online vacuum light furnaces and other production equipment. The company also has a quality inspection center that meets the national stainless steel tube quality inspection requirements. The quality inspection center has a 300Mpa hydraulic test machine, tensile test bench, Vickers hardness tester, 500°C temperature resistance test furnace, eddy current flaw detector and a series of stainless steel products. Testing and inspection equipment to ensure the reliability and stability of the chemical and physical properties of stainless steel products.　

The company annually produces more than 3,000 tons of stainless steel control lines and other products, sales marked covers both domestic and overseas, for domestic, we are network-enterprise company of CNOOC, Petro China and Sinopec, as for international,it has been widely used in Middle East, Southeast Asia, South America, Australia and so on.　

On the premise of improving the quality of its own brand products, the company has continuously increased the research and development of new products, and has cooperated and actively invested with many domestic universities and scientific research institutions. In recent years, the company has passed the certifications of CCS, GL, DNV and other classification societies.

With our support,you will have:

1. Technical data, technical guidance and training for free
2. Professional engineer to the site for tracking service
3. "just-in-time supply"(that is, supply at any time according to the actual demand of customer), in this way customers achieve zero inventory, maximize profits.
4. Most favorable offer,we take "taking small profits" as the principle.
5. 100% qualified product,Our company will strictly follow the requirements of relevant technical standards , grasp various links of production, and ensure product performance .
6. sufficient after sales services.

We are looking forward to developing business with friends from home and abroad on the basis of equality and mutual benefits!welcoming your enquiries!