High pressure manifold. The fracturing unit is one of the important means of fracturing and acidizing construction operations to transform oil and gas reservoirs. It is a large-scale equipment. Among the manifolds, the high-pressure manifold is the most vulnerable to damage. The construction pressure is high, the construction time is long, and the construction pressure changes alternately. Fracturing is caused by injecting high-pressure fluid to form sand-filled fractures of sufficient size in the bottom well formation to increase the fluidity of oil and gas.