Hengshui Jrain Frp frp pipes and fittings for ship building

Threaded drill rods are essentially high-strength steel tubes with male and female threads at each end, allowing them to be screwed together to form a continuous drill string. The thread design varies, but typically includes API connections like box and pin threads, ensuring a secure and reliable connection during drilling operations. These threads not only facilitate assembly and disassembly but also transmit torque from the surface down to the, enabling rotation and drilling action.

...

Our fiberglass structural shapes and pultruded fiberglass profiles are made from a combination of fiberglass and thermosetting resin systems. All shapes are lightweight, impact resistant, low maintenance, non-magnetic, low conductive, and have dimensional stability, making them easy to install and ideal for several applications. Custom shapes are available upon request. For more on fiberglass structural shapes, click here.

...

Once the material has been chosen, the focus shifts to the design. The dimensions of the sleeve must be precise to fit the shafts it will connect. Tolerances are measured in fractions of a millimeter, demonstrating the level of accuracy required. The design also needs to consider how the sleeve will be secured to the shafts. This could involve keys, setscrews, or other retention methods to prevent slippage or disconnection under load.

...