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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Hot rolling

Hot rolling, also called thermal rolling, means that metal materials are rolled in high temperature. It is highly used for steel pipes because the process needs less rolling force. In addition, we also provide other processing techniques, because cold rolling or cold drawing, dressing or finishing, upsetting, threading and heat treatment. Hot Rolling Unit (Thermal […]

API Coupling Weight

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 Advantages

Heavy weight drill pipe is the most commonly used in the vertical section of the hole and provides weight on the bit for directional drilling while maintaining more flexibility than a drill collar. Heavy weight is also knows as hevi-wate or HWDP in the industry. Heavy weight drill pipe has a “center upset”, also known […]

ASTM A519/ASME SA519 Structural Mechanical Piping

ASTM A519/ASME SA519: Seamless Carbon and Alloy Steel Mechanical TubingStandard: ASTM A519/ASME SA519The following are the symbol definitions for the various conditions: HR-Hot Rolled, CW-Cold Worked, SR-Stress Relieved, A-Annealed, N-Normalized DescriptionASTM A519/ASME SA519 seamless mechanical steel tubing is actually used as machinery and automobile structural steel line. With the easy bending feature, it is needed […]

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 […]

ASTM A179/ASME SA179 Cold Drawn Seamless Carbon Steel Tube

ASTM A179/ASME SA179: Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser TubesStandard: ASTM A179/ASME SA179 We can easily offer different grades of cold drawn seamless steel tubes, such as A179. Manufacture: Seamless carbon steel pipes are written by cold drawing. Introduction ASTM A179 or ASME SA179 cold drawn seamless carbon steel tube is applicable to tubular […]