Supplier of API-5CT Couplings, Casing Pipe and Tubing Pipe, Reaching The Most Stringent Standards.


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Api Couplings

We carry a full size range of 2-3/8” to 20″ API Couplings in J55, K55, N80, P110 grade.

All of our API couplings meet the American Petroleum Institute (API) Specifications 5CT&5B. On ground inventories are available from our Houston Inventory warehouse.

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Oilfield Casing Pipe

API 5CT Casing Pipe is used in different types of horizontal underground boring.

Casing pipe is jacked into an hole in segments and then connected together by welding or by threaded and coupled ends, or other proprietary pipe connectors.

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Oilfield Tubing Pipe

Tubing Pipe is a pipe or hollow cylinder for the conveyance of fluids (liquids or gases).

The terms ‘pipe’ and ‘tubing’ are almost interchangeable, although minor distinctions exist (generally, “tubing” implies tighter engineering requirements than “pipe”).

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Api Tubing Coupling

API Tubing Couplings Our company offers a wide range of API EUE and NUE Tubings Couplings, which are known for their high efficiency and long service life. Our range of EUE tubings are manufactured keeping in view the American petroleum institute’s specifications.Further, our range of tubings couplings are of following features: Corrosion resistance High efficiency Durability […]

Seamless Steel Pipe for Gas Cylinder

We use 37Mn, 34Mn2V, 35CrMo and other grades of steel to produce gas cylinder steel tubes. Basic length of seamless steel pipe for gas cylinder is between 4000 mm to 12000 mm. Iwowwee is also capable to produce steel pipes longer than 12000 mm or shorter than 4000 mm but aren’t quite shorter than 3000 […]

Heavy weight drill pipe

Heavy weight drill pipe (HWDP) is usually run in between the drill collars and the drill pipe in order to prevent fatigue of the drill pipe in the vertical drilling industry. Heavy weight drill pipe is also utilized in the horizontal directional drilling (HDD) industry for added strength in high stress situations. Heavy weight drill […]

API-5CT Markings

API products (tubing, pup joints, and couplings) should be stenciled or a combination of stamping and stenciling as per API Spec. 5CT. The sequence of stencil marking is as follows: Manufacturer’s name Monogram marking End finish Size designation Weight designation Grade and type Impact test temperature Heat treatment Manufacture process Supplementary requirements Hydrostatic test pressure […]

API Steel Grade Category and Color

API standardized several grades of steel that have different chemical content, manufacture processes, and heat treatments and, therefore, different mechanical properties. API organized these tubing grades into three groups. Group 1 is for all tubing in grades H40, J55, and N80. Group 2 is for restricted-yield tubing grades L80, C90, and T95. Group 3 is […]

Large diameter pipe

Excessive diameter pipe is used for low-pressure process piping plus drains. Large diameter carbon steel pipe can reach to be 48 inch diameter pipe, is easily welded and could be machined and drilled for fabrication purposes. Large diameter transfering is sized by diameter and wall thickness and fat per foot. An example would be 18 […]

Chemical Engineering Seamless Steel Tube

Seamless tube for chemical engineering is mainly applied to chemical fertilizer equipment to generate high temperature and questionable fluid. The representative materials are 16Mn, 12CrMo, 12Cr2Mo, and so forth. Seamless steel pipe for chemical engineering is suitable for your chemical equipment with the important temperature of -40℃ to 400℃ and the working pressure of 10 […]

Automobile Steel Pipe

Seamless Steel Tube for Auto Mechanical StructureStandards: ASTM A519, EN 10297-1 and JIS G3445 Applications JST automotive steel pipe is true for general structure and automobile mechanical structure seamless steel tube. We mainly manufacture the following grades of pipes, such as 10#, 20#, 35#, 45#, 16Mn, 1020, 1045, 1541, E275, E315, 34CrMo4, 42CrMo4, STKM13A, STKM13B, […]