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· Brief introduction of forged fitting
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· Processing method of Seamless Steel Pipe Elbow


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Concentric Reducer.
Source :本站   Time:3/15/2015 9:18:47 PM   hit:

  Concentric Reducer is the connection form of it, is the different diameter pipe and steel pipe butt welding, the main manufacturing standard Concentric Reducer is generally GB/T12459, GB/T13401, ASME B16.9, SH3408, SH3409, HG/T21635, HG/T21631, SY/T0510. Corresponds to the Concentric Reducer and the eccentric different diameter pipe, materials are carbon steel, alloy steel and stainless steel.

  Concentric Reducer classification

  In 1, division of materials

  Carbon steel: ASTM/ASME A234 WPB, WPC

  ASTM/ASME A234 WP 1-WP alloy: 12-WP 11-WP 22-WP 5-WP 91-WP911, 15Mo3 15CrMoV, 35CrMoV

  Stainless steel: ASTM/ASME A403 WP 304-304L-304H-304LN-304N

  ASTM/ASME A403 WP 316-316L-316H-316LN-316N-316Ti

  ASTM/ASME A403 WP 321-321H ASTM/ASME A403 WP 347-347H

  Low temperature steel: ASTM/ASME A402 WPL3-WPL 6

  High performance steel: ASTM/ASME A860 WPHY 42-46-52-60-65-70

  Cast steel, alloy steel, stainless steel, copper, aluminum alloy, plastic, argon Ge Li, PVC, PPR, RFPP (reinforced polypropylene) etc..

  2, to make classification methods

  3, to create criteria

  Divided into national standards, electric standard ship standard, standard, standard, American Standard, the German standard, Japanese standard, Russian standard, etc..

  In 4, the radius of curvature of the Division

  Divided into long radius elbow short radius elbow and. Long radius elbow refers to its radius of curvature equal to 1.5 times the diameter of pipe, namely R=1.5D; short radius elbow refers to its radius of curvature is equal to the external diameter of the pipe is R=1.0D. (D for the elbow diameter, R is the radius of curvature). 5 if divided by the pressure level to: there are about seventeen species, and American Standard pipe are the same, are: Sch5s, Sch10s, Sch10, Sch20, Sch30, Sch40s, STD, Sch40, Sch60, Sch80s, XS; Sch80, SCH100, Sch120, Sch140, Sch160, XXS; one of the most commonly used is STD and XS two.

  Standard system

  Pipe flange international standards there are two major systems, namely in Germany DIN (including the former Soviet Union) as the representative of the European pipe flange system and to the United States as the representative of the American ANSI pipe flange pipe flange system. In addition, there are Japanese JIS pipe flange, but in the petrochemical plant is usually only used for public works, and less influence in the international. Now countries pipe flange profile in:

  1, to Germany and the former Soviet Union as the representative of the European system of pipe flange

  2, American Standard pipe flange system, with ANSI B16.5 and ANSI B 16.47 as the representative

  3, the British and French pipe flange standard, between the two countries have two casing flange standard.

  To sum up, the international general standard pipe flange can be summarized as two different, pipe flange system and not interchangeable: one to Germany as the representative of the European pipe flange system; another is represented by the United States of America pipe flange system.

  IOS7005-1 is a standard of the international organization for standardization issued in 1992, the standard is actually the American and German pipe flange two sets of series of the merger of the pipe flange standard.

  Hebei holy day pipe group co., LTD. Co., is engaged in the production and service parts supply, we have the ability to produce all kinds of pipe fittings.Our main products are elbow, T-shirt, bend, reducer, cap, flange and socket.We've been in this line for about 20 years.Our products are exported to many countries and regions in southeast Asia, the Middle East, Europe and the United States.Our products enjoy good reputation both at home and abroad market.

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