We specializes in the production and supply of coiled tubing, capillary tubes, corrosive resistant alloy (CRA) coiled tubing, hydraulic control tubing, hydraulic control lines, tubing encapsulated cables, chemical injection lines, pre insulated tubes, multi core tube bundles, umbilical cable, and cable-alloy pipes. The products are widely used in petroleum, chemical, natural gas, sespecially 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. Our control lines in lengths suitable for the most challenging downhole environments.
316L stainless steel (UNS S31603) has been widely used in industry due to its excellent corrosion resistance. As one of the most commonly used coiled tubing materials, our 316L tube has mature technology and exquisite workmanship. Starting from the raw material, we strictly control the performance of steel. Our products meet ASTM A269 and all related industry standards. Our tubing is one continuous length of tubing, completely free of any welded joints or seams. Each coil is 100% hydrostatic tested. Eddy current testing (ET) is performed on the longitudinally seam welded tubing. Radiographic testing and ET are performed on material in the final heat treated condition. Yield pressure hydrostatic testing is performed on the heat treated tubing at final size.
Chemical Composition
Chemical Composition,% | ||||||||
Standard | ASTM A269 | ASTM A789 | ASTM B704 | |||||
Material | SS 304 | SS 304L | SS 316 | SS 316L | Duplex 2205 | Super Duplex 2507 | Incoloy 625 | Incoloy 825 |
UNS | S30400 | S30403 | S31600 | S31603 | S32205 | S32750 | N06625 | N08825 |
C | 0.08 | 0.035 | 0.08 | 0.035 | 0.03 | 0.03 | 0.1 | 0.05 |
Mn | 2 | 2 | 2 | 2 | 2 | 1.2 | 0.5 | 1 |
P | 0.045 | 0.045 | 0.045 | 0.045 | 0.03 | 0.035 | 0.015 | ... |
S | 0.03 | 0.03 | 0.03 | 0.03 | 0.02 | 0.02 | 0.015 | 0.03 |
Si | 1 | 1 | 1 | 1 | 1 | 0.8 | 0.5 | 0.5 |
Ni | 8.0-11.0 | 8.0-12.0 | 10.0-14.0 | 10.0-15.0 | 4.5-6.5 | 6.0-8.0 | min 58.0 | 38.0-46.0 |
Cr | 18.0-20.0 | 18.0-20.0 | 16.0-18.0 | 16.0-18.0 | 22.0-23.0 | 24.0-26.0 | 20.0-23.0 | 19.5-23.5 |
Mo | ... | ... | 2.00-3.00 | 2.00-3.00 | 3.0-3.5 | 3.0-3.5 | 8.0-10.0 | 2.5-3.5 |
N | ... | ... | ... | ... | 0.14-0.20 | 0.24-0.32 | ... | ... |
Cu | ... | ... | ... | ... | ... | 0.5 | ... | 1.5-3.0 |
Fe | 5 | min 22.0 | ||||||
Al | 0.4 | 0.2 | ||||||
Ti | 0.4 | 0.6-1.2 | ||||||
Cb+Ta | 3.15-4.15 | ... |
Size Chart
OD | Wall (inch) |
Materials | Standard | Working Pressure (MPa) |
Length |
1/8" | 0.02,0.028,0.035 | Austenitic steel 304L (UNS S30403) Austenitic steel 316L (UNS S31603) Duplex 2205 (UNS S32205 & S31803) Super Duplex 2507 (UNS S32750) Incoloy 825 (UNS N08825) Inconel 625 (UNS N06625) |
ASTM-A 269 ASTM-A 632 ASTM-A 789 ASTM-B 704 |
60-120 Mpa | Customized |
3/16" | 0.02,0.028,0.035,0.049 | ||||
1/4" | 0.02,0.028,0.035,0.049,0.065.0.083 | ||||
5/16" | |||||
3/8" | |||||
1/2" | |||||
* OD: Up to 1 inch |
The specification and length per coil can be customized according to customer’s requirements.