A steel pipe reducer is a component used in the pipelines to reduce its size from large to small bore in accordance to the inner diameter. The length of the reduction here is equal to an average of the smaller and larger pipe diameters. Here, the reducer can be used as a nozzle. The reducer helps in meeting the existing piping of varied sizes or hydraulic flow of the piping systems.
1. Pipe Reducer Material Types
Carbon Steel Reducer vs Stainless Steel Reducer
The reducers can be made of Carbon Steel, Alloy, or Stainless steel and much more. In comparison to the Stainless Steel Reducer, Carbon Steel Reducer possesses high-pressure resistance, higher strength, and wear resistant but this can be easily corroded.
Carbon Steel Reducer material standards and grades:
A234 WPB、A420 WPL6、MSS-SP-75 WPHY 42、46、52、56、60、65及び70。
For Stainless Steel Reducer:
ASTM A403 WP 304、304L、A403、316、316L、317、317L、321、310および904Lなど
For Alloy Pipe Reducer:
A234 WP1、WP5、WP9、WP11、WP22、WP91など
2. Reducer Types
There are two types of reducer, concentric reducer and eccentric reducer.
同心円レデューサ
This reducer consists of the symmetrical and conical shaped fittings that enlarge or reduce the diameter equally about the center line. For an example, when 1” pipe transitions to ¾” pipe, then the top or bottom of the pipe do not remain level. It is widely used when single or multiple diameter changes.
Eccentric Reducer
A conically shaped fitting that reduces or enlarges the diameter, but it is not symmetrical about the center line. This is used in pipe-work systems for reducing the diameter of a pipe from one size to larger or small size.
Concentric Reducer vs Eccentric Reducer Differences
Concentric reducers are widely used while eccentric reducers are applied to maintain the top and bottom pipe level. Eccentric Reducers also avoids trapping of air inside the pipe, and Concentric Reducer removes noise pollution.
3. Manufacturing Process of Steel Pipe Reducer
There are versatile manufacturing processes for the reducers. These are made of welded pipes with the required filling material. However, EFW and ERW pipes cannot use the reducer. To manufacture forged parts, different kinds of methods are used including cold and hot forming processes. It includes the ‘Outer Die Method.’
4. Outer Dia Method
It is the most common method for manufacturing the steel pipe reducer. The pipe is cut and pressed in the outer die whereas, one end of the pipe is compressed into the smaller size. This method is fit for manufacturing small and medium-size reducers.
5. Connection Types of Pipe Reducer
Ranges from different connection types, pipe reducer could be classified with socket weld reducer and butt weld reducer.
Socket Weld Reducer vs Butt Weld Reducer
Socket weld reducer also called socket weld insert, it has three types 1, 2 and 3. Manufacturing standards comply to ASME B16.11.
The Socket Weld resists ½ of the strength of butt welding, so it is used for small-diameter pipes possessing a diameter of NPS 2 or less. Butt Weld has good strength, as it is suitable for high pressure and temperature pipelines.
Butt weld reducer ends in plan or beveled, manufactured in accordance with ASME B16.9 and welding process according ASME B16.25.
6. Applications of Steel Pipe Reducer
The usage of a steel reducer is carried out in the chemical factories and power plants. It makes the piping system reliable and compact. It safeguards the piping system from any kind of adverse impact or thermal deformation. When it is on the pressure circle, it prevents from any type of leakage and is easy to install. The nickel or chrome coated reducers extends the product life, useful for high vapor lines, and prevents corrosion.
パイプレデューサー、レデューサー継手
利用可能鋼管レデューサーは、同心と偏心タイプがあります。 パイプ減速は大から小孔にパイプサイズを減らすパイプラインに適切な成分です。 鋼管減速と合金管減速の入口及び出口端は共通の中心線に整列します。
レデューサーは、炭素鋼、合金、またはステンレス鋼製とはるかにすることができます。 ステンレス鋼の減速と比較して、炭素鋼減速は、高耐圧性を有してより高い強度、および耐摩耗性が、これは容易に腐食することができます。
炭素鋼レデューサー材料規格と等級：
A234 WPB、A420 WPL6、MSS-SP-75 WPHY 42、46、52、56、60、65及び70。
ステンレス鋼の減速の場合：
ASTM A403 WP 304、304L、A403、316、316L、317、317L、321、310および904Lなど
合金パイプ減速の場合：
A234 WP1、WP5、WP9、WP11、WP22、WP91など
光塗油、ブラック塗装
