Tee, Reducing Tee, Hebei billion gold piping supplied by Hebei billion gold piping. Pipeline Manufacturing Co., Ltd. Hebei billion in gold (www.yijinguanjian.com) is Hebei Cangzhou quality certified company Commercial Union, with Hebei billion gold piping and other brands, has a good reputation, honesty, service-oriented "business alliance customer clicks on the page "Icons, we will be happy to serve you! Stone has equal diameter and diameter of the points, such as takeover Stone Trail ends are the same size; same Reducing the size of a four-way competent to take over, and over size is smaller than the head of a branch pipe over size. Stone Stone is used to weld a pipe at the pipe branch. Stone is concerned for the use of seamless pipe manufacturing, now commonly used in hydraulic bulging process and hot forming two kinds. Stone Pipe Fittings Reducing Tee, adding the right amount of one or more alloying elements in plain carbon steels constituted on the basis of iron-carbon alloys. According add different elements Tee and take appropriate processing technology, a high strength, high toughness, wear resistance, corrosion resistance, low temperature, high temperature, non-magnetic and other special properties. Steel's performance depends on the phase composition of the steel, the phase composition and structure Tee manufacturer of various steel components relative to the volume and share in each other's distribution. Alloying elements through the impact of these factors play a role. Impact on the phase transition point of steel is to change the position of the steel in the main phase transition point can be broadly grouped into the following three aspects: ① change the phase transition point temperature. Generally, expand γ phase (austenite) of the element region, such as manganese, nickel, carbon, nitrogen, copper, zinc, etc., so that the temperature decrease at point A3, A4 point temperature; contrary, out of the element γ phase region such as zirconium, boron, silicon, phosphorus, titanium, vanadium, molybdenum, tungsten, niobium, the temperature of A3 point, A4-point temperature. Only cobalt were elevated so A3 and A4 point temperature. Role of chromium is special, so when the amount of chromium containing less than 7% A3-point temperature is lowered, more than makes A3 point temperature increased 7%.