| Payment Type: | L/C,T/T |
| Incoterm: | FOB,CFR,CIF,EXW |
| Transportation: | Ocean,Land,Air,Express |
| Port: | Dalian,Tianjin,Shanghai |
| Selling Units | : | Others |
| Package Type | : | Sea packing |
Improvements in the technology for the enhanced exploitation of oil and gas fields has increasingly required the use of long continuous lengths of stainless steel and nickel alloy tubulars for hydraulic control, instrumentation, chemical injection, umbilical and flowline control applications. The benefits of this tubular technology have resulted in reduced operating costs, improved recovery methods and reduced capital expenditure by connecting downhole valves and chemical injection with remote and satellite wells to a fixed or floating central operating platform.
Long lengths can be made by seam welding formed strip but such tubing has OD & ID discontinuity and may suffer from local problems of mechanical strength or corrosion. A welded & sunk tube improves these aspects and has been proven reliable in service over several decades for offshore applications. Although more expensive than welded only tubing, the welded and redrawn tube is still relatively inexpensive compared to seamless.
Applications
• Downhole hydraulic control lines.
• Downhole chemical control lines.
• Subsea control lines for hydraulic power and chemical injection.
• Smoothbore control lines used in fibre optic applications.
Production process
Coiled tubing is available in a range of different product forms depending on the customer requirements. We manufacture seam welded and redrawn, seamless tube products. The standard grades are 316L, alloy 825 and alloy 625. Other grades of stainless steel in duplex and superduplex and nickel alloy are available on request. Tubing can be supplied in the annealed or cold worked condition.
• Seam-welded and redrawn tubing.
• Seamless and redrawn tubing.
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