Elbow is one of the main high-quality varieties of products my company, the high-pressure elbow 90 degrees for a high-pressure pipe fittings corner were a different angle turn. All fittings in high pressure piping system used in the largest proportion, about 80 percent. General thickness of the high-pressure elbow 90 degrees elbow to be thicker than normal, or high voltage strength of the material strength than ordinary elbow higher. There butt and socket weld and threaded connection in three ways. Implementation of standards GB / T12459-2005, GB / T13401-2005 and so on. 90 degree elbow material commonly used high-pressure high-quality cast steel, carbon steel, stainless steel or alloy steel, high pressure elbow can withstand high pressure in a variety of high-pressure pipeline and the pipeline can withstand the corrosive fluid.