Reducer Concentric/Eccentric Seamless Welded ANSI B16.9,DIN2616,JIS B2311
Concentric/Eccentric reducer Seamless Welded
Specification List
| Porduct Name | Carbon Steel /Stainless Steel Concentric/Eccentric Reducer |
| Size | 1/2"-24" seamless, 26"-80" welded |
| Standard | ANSI B16.9, EN10253-2, DIN2616, JIS B2311, |
| Wall thickness | STD, SCH20,SCH30,SCH40, SCH60, SCH80, SCH160, DIN,JIS and etc. |
| Type | Seamless and Welded |
| End | Bevel end/BE/buttweld |
| Surface | nature color, varnished, black painting, anti-rust oil etc. |
| Material | Carbon steel: A234WPB, A420WPL6 St37,St45, E24, A42CP, 16Mn, Q345, P245GH, P235GH, P265GH, P280GH,P295GH,P355GH etc. |
| Pipeline steel: WPHY42, WPHY52, WPHY60, WPHY65,WPHY70, WPHY80 and etc. |
| Cr-Mo alloy steel: P11,P22,P5, P9,P91, 10CrMo9-10, 16Mo3 etc. |
| Application | Petrochemical industy;avation and aerospace industry;pharmaceutical industry; gas exhaust;power plant;ship buliding;water treament,etc. |
| Advantages | ready stock,faster delivery time;available in all sizes,austomized;high quality |
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 diffuser or a nozzle. The reducer helps in meeting the existing piping of varied sizes or hydraulic flow of the piping systems.
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.
Reducer Types
There are two types of reducer, concentric reducer and eccentric reducer.
Concentric Reducer
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.
Ranges from different connection types, pipe reducer could be classified with socket weld reducer and 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.
Place of Origin: China
Pipe reducers come into concentric reducers and eccentric reducers.They are made of carbon steel,alloy steel,stainless steel,low temperature steel or high performance steel,etc
Product Name: Concentric/Eccentric reducer
Size: 1/2″–72″
Seamless elbow: 1/2″～24″ DN15～DN600
Welded Elbow: 4″～72″ DN150～DN1800
Wall Thinkness: sch10, sch20, sch30, std, sch40, sch60, xs, sch80, sch100,sch120, sch140, sch160, xxs, std,sch5s, sch20s, sch40s, sch80s
Maximum thickness: 120mm
Standard: ANSI B16.9 / 16.28, ASTM A53/A106, API 5L, ASME B36.10M—1996, DIN2605 / 2615 / 2616, JIS P2311/2312
Material: Carbon steel , alloy steel, stainless steel
Surface treatment: Transparent oil, rust-proof black oil or hot galvanized.
Drawing with data:
ANSI /ASME B16.9 Reducers Dimensions, Buttweld Concentric Reducer Dimensions Chart, Eccentric Buttweld Reducers Dimensions:
Eccnetric Reducer Dimensions ANSI B16.9
| Code RCD REISO | Ø BIG | Ø SMALL | HEIGHT H mm | THEORETICAL WEIGHT KG |
| DN | D mm | Thickness S mm | DN | d mm | Thickness s mm |
| 27 21 | 3/4 | 26.9 | 2.3 | 1/2 | 21.3 | 2.0 | 38 | 0.08 |
| 33 21 | 1 | 33.7 | 2.6 | 1/2 | 21.3 | 2.0 | 50 | 0.09 |
| 33 27 | 3/4 | 26.9 | 2.3 | 0.09 |
| 42 21 | 1″1/4 | 42.4 | 2.6 | 1/2 | 21.3 | 2.0 | 50 | 0.12 |
| 42 27 | 3/4 | 26.9 | 2.3 | 0.13 |
| 42 33 | 1 | 33.7 | 2.6 | 0.14 |
| *48 21 | 1″1/2 | 48.3 | 2.6 | 1/2 | 21.3 | 2.0 | 64 | 0.18 |
| 48 27 | 3/4 | 26.9 | 2.3 | 0.19 |
| 48 33 | 1 | 33.7 | 2.6 | 0.20 |
| 48 42 | 1″1/4 | 42.4 | 2.6 | 0.20 |
| 60 27 | 2 | 60.3 | 2.9 | 3/4 | 26.9 | 2.3 | 76 | 0.30 |
| 60 33 | 1 | 33.7 | 2.6 | 0.31 |
| 60 42 | 1″1/4 | 42.4 | 2.6 | 0.32 |
| 60 48 | 1″1/2 | 48.3 | 2.6 | 0.33 |
| 76 33 | 2″1/2 | 76.1 | 2.9 | 1 | 33.7 | 2.6 | 90 | 0.40 |
| 76 42 | 1″1/4 | 42.4 | 2.6 | 0.47 |
| 76 48 | 1″1/2 | 48.3 | 2.6 | 0.48 |
| 76 60 | 2 | 60.3 | 2.6 | 0.49 |
| 89 42 | 3 | 88.9 | 3.2 | 1″1/4 | 42.4 | 2.6 | 90 | 0.55 |
| 89 48 | 1″1/2 | 48.3 | 2.6 | 0.61 |
| 89 60 | 2 | 60.3 | 2.9 | 0.62 |
| 89 76 | 2″1/2 | 76.1 | 2.9 | 0.63 |
| 114 48 | 4 | 114.3 | 3.6 | 1″1/2 | 48.3 | 2.6 | 100 | 0.85 |
| 114 60 | 2 | 60.3 | 2.9 | 0.98 |
| 114 76 | 2″1/2 | 76.1 | 2.9 | 1.00 |
| 114 89 | 3 | 88.9 | 3.2 | 1.02 |
| 139 60 | 5 | 139.7 | 4.0 | 2 | 60.3 | 2.9 | 127 | 1.60 |
| 139 76 | 2″1/2 | 76.1 | 2.9 | 1.70 |
| 139 89 | 3 | 88.9 | 3.2 | 1.74 |
| 139 114 | 4 | 114.3 | 3.6 | 1.76 |
| *168 76 | 6 | 168.3 | 4.5 | 2″1/2 | 76.1 | 2.9 | 140 | 2.60 |
| 168 89 | 3 | 88.9 | 3.2 | 2.70 |
| 168 114 | 4 | 114.3 | 3.6 | 2.82 |
| 168 139 | 5 | 139.7 | 4.0 | 2.94 |
| 219 114 | 8 | 219.1 | 6.3 | 4 | 114.3 | 3.6 | 152 | 5.03 |
| 219 139 | 5 | 139.7 | 4.0 | 5.12 |
| 219 168 | 6 | 168.3 | 4.5 | 5.18 |
| *273 114 | 10 | 273.0 | 6.3 | 4 | 114.3 | 3.6 | 178 | 7.00 |
| *273 139 | 5 | 139.7 | 4.0 | 7.20 |
| 273 168 | 6 | 168.3 | 4.5 | 7.40 |
| 273 219 | 8 | 219.1 | 6.3 | 7.55 |
| 323 168 | 12 | 323.9 | 7.1 | 6 | 168.3 | 4.5 | 203 | 11.00 |
| 323 219 | 8 | 219.1 | 6.3 | 11.10 |
| 323 273 | 10 | 273 | 6.3 | 11.20 |
N.B. code RCD = concentric reducers – code REISO = excentric reducers
* Only concentric
ANSI / ASME B16.9 REDUCER – Dimensional Tolerances of Concnentric Reducer and Eccentric Pipe Reducers
| Nominal Pipe Size | 1/2 to 2.1/2 | 3 to 3.1/2 | 4 | 5 to 8 |
Outside Diameter
at Bevel (D) | + 1.6
– 0.8 | 1.6 | 1.6 | + 2.4
– 1.6 |
| Inside Diameter at End | 0.8 | 1.6 | 1.6 | 1.6 |
| Overall Length (H) | 2 | 2 | 2 | 2 |
| Nominal Pipe Size | 10 to 18 | 20 to 24 | 26 to 30 | 32 to 48 |
Outside Diameter
at Bevel (D) | + 4
– 3.2 | + 6.4
– 4.8 | + 6.4
– 4.8 | + 6.4
– 4.8 |
| Inside Diameter at End | 3.2 | 4.8 | + 6.4
– 4.8 | + 6.4
– 4.8 |
| Overall Length (H) | 2 | 2 | 5 | 5 |
| Wall Thickness (t) | Not less than 87.5% of Nominal Wall Thickness |
Dimensional tolerances are in millimeters unless otherwise indicated and are equal ± except as noted.
Products showing of our company:
1. who are we?
We are based in Hebei, China, start from 1986,sell flange and pipe fitting sold around the world.
2. how can we guarantee quality?
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Always final Inspection before shipment;
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Forged Flange, Fitting,Forged Fitting, Seamless Pipe.
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