The tube is linked by pipe fitting reducer

　　One of the chemical tubing fittings for pipe fitting reducer. It is also divided into the concentric reducer and the eccentric reducer.

　　The diameter reducer material includes stainless steel reducer (304304l316316l), alloy steel reducer, carbon steel reducer 20 steel q234q345 and so on.

　　Standard for pipe fitting reducer: national standard, American Standard, British standard and all kinds of non-standard high pressure stamping. The quality of the pipe should be in accordance with the current national standard "steel butt welded pipe fittings" GB/T 12459-2005, the roundness of the pipe should not be more than 1% of the outer diameter of the corresponding end, and the allowable deviation is + 3mm; the allowable deviation of the size of the pipe should be in accordance with the provisions of the table 4.2.2-3. SY/T5037, GB/T9711, GB/T8163, GB/T8163, ASTM A106/A53 GRB, API 5L, APT5CT, ASTM A105, ASTM, German, German standards and customer requirements.

　　The reducer is a kind of pipe fitting used for changing the diameter of pipes. Usually, the forming process is ASTM A420 WPL6 Stainless Steel Reducer, pressing, expanding or pressing, and stamping can also be used for some diameter reducer.

　　The shrinkage forming process of the tube is put into the forming die, which is equal to the diameter of the large end of the tube. By pressing along the axial direction of the tube, the metal moves along the die cavity and forms. According to the diameter of the reducer, it is divided into one pressing or multiple pressing forming.