Tiptop is specialized in providing stainless steel coiled tube,
stainless steel control line, stainless steel testing cable,
stainless steel capillary tube, stainless steel continuous tube,
stainless steel seamless tube, stainless steel welded tube as well
as stainless steel multi –core tubes for shipbuilding and other
stainless steel products. All the products conform to the standards
of ASTM A269 and related industrial standards.
Cold drawn welded control line tube,
Coiled seam welded pressure tubing in the heat treated condition is
typically used in oil and natural gas wells for applications
including hydraulically actuated surface-controlled subsurface
safety valves, chemical injection, and instrumentation. In such
applications, it is commonly referred to as control line tubing.
The tubing is generally deployed by strapping it to the outside of
the production casing. It may be encapsulated and can be included
along with other pressure tubing or TEC and mechanical components,
such as bumpers, within a flatpack. The tubing is frequently
supplied as 5000 ft to 35000 ft. coils on a wooden or steel reel,
depending on size.
MANUFACTURING PROCESS AND RESULTANT PROPERTIES
The desired sizes are obtained by repeat cold drawing process, any
welded joints are not
acceptable in each one coil ranging from 0.125 inch to 1 inch O.D.
(3.2 mm to 25.4 mm) and a variety of wall thicknesses.
The strip is formed into a tubular cross section and longitudinally
seam welded using either the gas tungsten arc (GTAW). The tubing
may be welded at a larger outside diameter, sunk to final size and
subsequently heat treated. Heat treated tubing is one continuous
length of tubing, completely free of any welded joints or seams.
Each coil is
100% hydrostatic tested.
NONDESTRUCTIVE TESTING (NDT)
Eddy current testing (ECT) is performed on the longitudinally seam
welded tubing. Radiographic testing and ECT are performed on
material in the final heat treated condition. Yield pressure
hydrostatic testing is performed on the heat treated tubing at
final size.
| Material | OD (inch) | Wall Thickness (inch) | Working Pressure (MPa) | Length (M/Reel) |
| 304L, 316L, Incoloy 825, Incoloy 625, Duplex 2205, Super Duplex
2207 | 1/8” | 0.025”, 0.035”, 0.049” | 80--120 | 50--4000 |
| 304L, 316L, Incoloy 825, Incoloy 625, Duplex 2205, Super Duplex
2207 | 1/4” | 0.035”, 0.049”, 0.065” | 60--120 | 50--3000 |
| 304L, 316L, Incoloy 825, Incoloy 625, Duplex 2205, Super Duplex
2207 | 3/8” | 0.035”, 0.049”, 0.065” | 60--120 | 50--2500 |
| 304L, 316L, Incoloy 825, Incoloy 625, Duplex 2205, Super Duplex
2207 | 1/2” | 0.035”, 0.049”, 0.065” | 60--120 | 50--2000 |
