1 / 4 '' OD x 0.049 '' WT Capillary Line Hydraulic Control Line without Orbital Welds
Meilong Tube supplies a whole range of products to the oil and gas sector, and it’s one of our most important markets. You’ll find our high performance capillary line tubes successfully used in some of the most aggressive subsea and downhole conditions thanks to our proven track record in meeting the strict quality requirements of the oil, gas and geothermal energy industries.
Improving technology has extended the range of ways in which oil and gas fields can be exploited, and increasingly projects require the use of long, continuous lengths of stainless steel control lines. These are employed in a variety of applications including hydraulic controls, instrumentation, chemical injection, umbilicals and flowline control. Meilong Tube supplies products for all of these applications, and more, lowering operating costs and improved recovery methods for our customers.
Thanks to advances in tubular control line technologies, it is now cheaper and easier to connect downhole valves and chemical injection systems with remote and satellite wells, for both fixed and floating central platforms. We offer coiled tubing for control lines in stainless steel and nickel alloys.
Testing Abilities for Quality of Capillary Line
We monitor product quality through a rigorous inspection and testing process conducted by our team of highly qualified professionals. The extensive training and experience of Meilong Tube members includes:
|
Chemical
Corrosion
Dimensional
Eddy current
Elongation
|
Flare
Flatten
Grain size
Hardness
Hydrostatic
|
Metallurgical
Positive material identification (PMI)
Surface roughness
Tensile
Yield
|
Features of Capillary Line Tubing
Close dimensional tolerances
Considerably enhanced mechanical properties
Superior surface finish
High cleanness of inside surface
Controlled ovality, eccentricity
Typical Capillary Line Tubing Size
Outside diameter of control lines is mainly 1/4’’ (6.35mm).
Wall thicknesses: 0.035’’ (0.89mm), 0.049’’ (1.24mm), 0.065’’ (1.65mm)
Control line tubing is available in lengths from 400 feet (122 meters) to 32,808 feet (10,000 meters). No orbitally butt welds.
Other specifications (1/8’’ to 3/4’’) are available on request.
| Imperial size |
Metric size |
|
OD
inch
|
WT
inch
|
OD
mm
|
WT
mm
|
| 1/8 (0.125) |
0.028 |
3.18 |
0.71 |
| 0.035 |
3.18 |
0.89 |
| 3/16 (0.188) |
0.028 |
4.76 |
0.71 |
| 0.035 |
4.76 |
0.89 |
| 0.049 |
4.76 |
1.24 |
| 1/4 (0.250) |
0.035 |
6.35 |
0.89 |
| 0.049 |
6.35 |
1.24 |
| 0.065 |
6.35 |
1.65 |
| 0.083 |
6.35 |
2.11 |
| 3/8 (0.375) |
0.035 |
9.53 |
0.89 |
| 0.049 |
9.53 |
1.24 |
| 0.065 |
9.53 |
1.65 |
| 0.083 |
9.53 |
2.11 |
| 1/2 (0.500) |
0.035 |
12.7 |
0.89 |
| 0.049 |
12.7 |
1.24 |
| 0.065 |
12.7 |
1.65 |
| 0.083 |
12.7 |
2.11 |
Chemical Composition of Stainless Steel 316L
| Carbon |
Manganese |
Phosphorus |
Sulfur |
Silicon |
Nickel |
Chromium |
Molybdenum |
| % |
% |
% |
% |
% |
% |
% |
% |
| max. |
max. |
max. |
max. |
max. |
|
|
|
| 0.035 |
2.00 |
0.045 |
0.030 |
1.00 |
10.0-15.0 |
16.0-18.0 |
2.00-3.00 |
Standard Equivalence
| Grade |
UNS No |
Euro Standard |
Japanese |
| No |
Name |
JIS |
| Alloy |
ASTM/ASME |
EN10216-5 |
EN10216-5 |
JIS G3463 |
| 316L |
S31603 |
1.4404, 1.4435 |
X2CrNiMo17-12-2 |
SUS316LTB |
Dimensional Tolerance of 316L Capillary Line
| ASTM A269 / ASME SA269, 316L, UNS S31603 |
| Size OD |
Tolerance OD |
Tolerance WT |
|
≤1/2’’ (≤12.7 mm)
1/2’’<OD≤1’’ (12.7<OD≤25.4 mm)
|
±0.005’’ (±0.13 mm)
±0.005’’ (±0.13 mm)
|
±15%
±10%
|
Meilong Standard
| Size OD |
Tolerance OD |
Tolerance WT |
|
≤1/2’’ (≤12.7 mm)
1/2’’<OD≤1’’ (12.7<OD≤25.4 mm)
|
±0.004’’ (±0.10 mm)
±0.004’’ (±0.10 mm)
|
±10%
±8%
|
Capillary Line Tubing Weight per Meter (kg)
Stainless 316L (UNS S31603)
| O.D. |
W.T. |
| Fraction |
Decimal |
0.028 |
0.035 |
0.049 |
0.065 |
0.083 |
| 1/8 |
0.125 |
0.0442 |
0.0512 |
- |
- |
- |
| 1/4 |
0.250 |
0.1012 |
0.1225 |
0.1603 |
0.1957 |
0.2255 |
| 3/8 |
0.375 |
0.1580 |
0.1936 |
0.2598 |
0.3278 |
0.3944 |
| 1/2 |
0.500 |
0.2150 |
0.2647 |
0.3595 |
0.4600 |
0.5631 |
| 5/8 |
0.625 |
0.2720 |
0.3360 |
0.4592 |
0.5923 |
0.7319 |
| 3/4 |
0.750 |
0.3289 |
0.4072 |
0.5588 |
0.7244 |
0.9006 |
Capillary Line Process and Packing
Seamless: pierced, redrawn, annealed (multi-pass circulation process)
Welded: longitudinally welded (by TIG or Laser beam), redrawn, annealed (multi-pass circulation process)
Packing: Tubing is level wound coiled on the metal / wooden drums or spools.
All drums or spools are packed in wooden crates for easy logistic operation.
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