Size range: Seamless, DN15 - DN600 (1/2" - 24"); Welded, DN15 - DN1200 (1/2" - 48")
Manufacturing Standard: National standard: GB/T12459, GB/T13401, HG/T21635, HG/T21631
American Standard: ASME/ANSI B16.9 MSS SP43
Japanese Standard: JIS B 2311/2220
German Standard: DIN2605/2616/2615/2617
Russian Standard: GOST 17375/17376 and so on
Non-standard customized processing drawings are also acceptable
Stainless steel pipe fitting belongs to a kind of pipe fitting, it is made of stainless steel material so called stainless steel pipe fitting.Stainless steel pipe fittings include: stainless steel elbow, stainless steel tee, stainless steel tee, stainless steel flange and so on.
Reducing pipe shrinkage, is the size of the stainless steel head of the large diameter of one end of the tube heated to red hot state, with a hammer hit, make its diameter reduced, 20# steel hot pressure size of the head reducing pipe, become a big one small pipe fitting, commonly known as "size head", or "diameter".Sometimes the size of stainless steel head at both ends of the diameter difference is too big, the end of the large diameter of the tube cut off a few arc surface triangle, and then reheat to the red hot state, with a hammer, so that the cut off gap back together to form a seam, and will form a small port round, after the seam welded.According to the size of reducing pipe, it can be divided into one pressing forming or several pressing forming.In addition to using steel pipe as raw material to produce the size head, the size head of some specifications can also be produced by using steel plate stamping process.The shape of the drawing die is designed according to the size of the inner surface of the head.
In addition to the use of steel pipe as the raw material to produce the size of the head, the size of some specifications of the head can also be produced by steel plate stamping process.Size head (reducing pipe) is a kind of pipe fitting for pipe diameter.The stainless steel size head usually adopts the forming process of reducing diameter pressing, expanding diameter pressing or reducing diameter plus expanding diameter pressing.The shrinkage forming process of the size head is to put the tube blank with the same diameter as the big end of the size head into the forming die, and press along the axial direction of the tube blank to make the metal move along the die cavity and shrink forming.
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