API Tubing
Classification :
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Product Details
Tubing is a relatively small-diameter pipe that is run into a well to serve as a conduit for the passage of oil and gas to the field surface facilities for processing. Tubing must be adequately strong to resist loads and deformations associated with production and workovers. Further, tubing must be sized to support the expected rates of production of oil and gas.
Sizes and Materials
Tubing pipes are manufactured in seamless and welded execution, in the size range of 1.050 to 5 1/2 inches (consult this article to see the AP5CT tubing pipes sizes) and in the following material grades: H-40, J-55, K-55, N-80, L-80, C-90, T-95, P-110, Q-125
End Connections
The main types of connections for tubing pipes are NUE (non-upset), EUE (external upset) and premium. Corrosion resistance under sour service conditions is a very important OCTG characteristic, especially for casing and tubing.
More casing pipes and their colors

Specification
|
Oil Tubing |
Range 1 |
Range 2 |
Range 3 |
|
6.10~7.32 |
8.53~9.75 |
11.58~12.80 |
| Label | D Outside diameter mm | Wall thickness mm | C type of end-finish | |||||||||
| 1 | 2 | |||||||||||
| NU T&C | EU T&C | IJ | H40 | J55 | L80 | N80 | C90 | T95 | P110 | |||
| 1.9 | 2.75 | 2.9 | 4 | 48.26 | 3.68 | PNUI | PNUI | PNUI | PNUI | PNUI | PNUI | |
| 3.65 | 3.73 | |||||||||||

Custom-made irregular-shaped tubes
Irregular-shaped tubes are hollow steel materials with non-standard irregular cross-sections, which are different from ordinary round tubes. We support customized production based on drawings and samples. The cross-section, material, wall thickness, and length can be adjusted according to working conditions to reduce subsequent cutting and welding processes and improve the overall strength and assembly accuracy of the components.
Packing and shipping
Our company has passed ISO9001 quality management system certification, Our Mill product with CE/EN10204 / ASTM/Classification society certificate/CASO/BIS etc certificate.All the customers give good appreciation to our products.We are glad to be your good partner.

Application Areas
Steel is widely used in steel structure workshops, bridge frames, main structures of high-rise buildings, and infrastructure construction (such as highways, oil and gas pipelines). Its high strength properties ensure load-bearing stability and seismic performance. In ship manufacturing, steel is used to build hull structures, decks, and internal components. Hot-rolled coils rely on their load-bearing capacity to adapt to harsh environments.

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Company Mission Focused on the supply and custom processing of metal materials, we leverage reliable sourcing, consistent quality, and efficient service to help clients reduce costs and enhance efficiency, create opportunities for our employees, and empower the development of the industry as a whole.
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Rooted in the Qilu region, reaching across the nation, and expanding globally, we aspire to become a comprehensive supply chain service provider within the metal materials industry—distinguished by high quality and an impeccable reputation—and to build a respected, sustainable industrial brand destined to endure for a century.
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With a commitment to excellence, innovation, and sustainability, the company has established itself as a trusted partner in the international steel industry.After nearly two decades of relentless endeavour, our client base now spans over 110 countries and regions across Europe, the Middle East, South America, and Southeast Asia.
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Focused on the supply and custom processing of metal materials, we leverage reliable sourcing, consistent quality, and efficient service to help clients reduce costs and enhance efficiency, create opportunities for our employees, and empower the development of the industry as a whole.
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