Description:1. Material: Our black couplings are made of malleable cast iron, and sprayed with black coating. They have the characteristics of high strength, toughness, durability, pressure resistance, corrosion resistance, and long service life.2. Design: The pipe couplings are connected up and down which can be used to connect and extend the same-direction pipes, with a tight structure and high strength, the threads are even and clear, the sealing is good, prevents water leakage, and it will not loosen after long-term use; it can withstand certain pressure and temperature changes to ensure the stability of use. You can use it with confidence.3. Easy To Use: Our malleable cast iron fittings have threads inside. When installing, just connect the threaded rod or pipe to the couplings.
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