Weld Concentric Reducer (L31)
KINGMAN sanitary concentric reducer is a stainless steel pipe fitting designed for sanitary piping systems in food, beverage, dairy and biopharmaceutical industries. It connects pipelines of different diameters, realizing smooth transition of medium flow. With seamless welding ends and high-precision inner polishing, it meets strict hygienic standards and supports CIP/SIP cleaning and sterilization.
Specifications
| Parameter | Value |
|---|---|
| Product Type | Sanitary Reducer |
| Size Range | DN15–DN300 (approx. 1/2"–12") |
| Material | 304 / 316L stainless steel |
| Surface | Satin polish / Mirror / Vibrate / Pickled / Sand blast / EP |
| Products Range | Concentric / Eccentric |
| Connection Standard | 3A / SMS / DIN / ISO / RJT / IDF /ASME BPE |
| Connection Type | Tri-Clamp / Weld / Threaded / Flange (please confirm) |
| OEM | any special OEM services |
| Certification | ISO 9001, 3A,CE,EAC,health wading license |
Dimensions
DIN Standard
| Material Code | Size | A | D | D2 |
|---|---|---|---|---|
| FR01DINWW0411020015 | DN20/15 | 7.0 | 22.0 | 18.0 |
| FR01DINWW0411025020 | DN25/20 | 11.0 | 28.0 | 22.0 |
| FR01DINWW0411032020 | DN32/20 | 22.0 | 34.0 | 22.0 |
| FR01DINWW0411032025 | DN32/25 | 11.0 | 34.0 | 28.0 |
| FR01DINWW0411040020 | DN40/20 | 33.0 | 40.0 | 22.0 |
| FR01DINWW0411040025 | DN40/25 | 22.0 | 40.0 | 28.0 |
| FR01DINWW0411040032 | DN40/32 | 11.0 | 40.0 | 34.0 |
| FR01DINWW0411050025 | DN50/25 | 44.0 | 52.0 | 28.0 |
| FR01DINWW0411050032 | DN50/32 | 33.0 | 52.0 | 34.0 |
| FR01DINWW0411050040 | DN50/40 | 22.0 | 52.0 | 40.0 |
| FR01DINWW0411065025 | DN65/25 | 73.0 | 70.0 | 28.0 |
| FR01DINWW0411065032 | DN65/32 | 62.0 | 70.0 | 34.0 |
| FR01DINWW0411065040 | DN65/40 | 51.0 | 70.0 | 40.0 |
| FR01DINWW0411065050 | DN65/50 | 29.0 | 70.0 | 52.0 |
| FR01DINWW0411080040 | DN80/40 | 78.0 | 85.0 | 40.0 |
| FR01DINWW0411080050 | DN80/50 | 56.0 | 85.0 | 52.0 |
| FR01DINWW0411080065 | DN80/65 | 27.0 | 85.0 | 70.0 |
| FR01DINWW0411100050 | DN100/50 | 90.0 | 104.0 | 52.0 |
| FR01DINWW0411100065 | DN100/65 | 61.0 | 104.0 | 70.0 |
| FR01DINWW0411100080 | DN100/80 | 34.0 | 104.0 | 85.0 |
| FR02DINWW0411020015 | ||||
| FR02DINWW0411025020 | ||||
| FR02DINWW0411032020 | ||||
| FR02DINWW0411032025 | ||||
| FR02DINWW0411040020 | ||||
| FR02DINWW0411040025 | ||||
| FR02DINWW0411040032 | ||||
| FR02DINWW0411050025 | ||||
| FR02DINWW0411050032 | ||||
| FR02DINWW0411050040 | ||||
| FR02DINWW0411065025 | ||||
| FR02DINWW0411065032 | ||||
| FR02DINWW0411065040 | ||||
| FR02DINWW0411065050 | ||||
| FR02DINWW0411080040 | ||||
| FR02DINWW0411080050 | ||||
| FR02DINWW0411080065 | ||||
| FR02DINWW0411100050 | ||||
| FR02DINWW0411100065 | ||||
| FR02DINWW0411100080 |
SMS Standard
| Material Code | Size | A | A1 | D | D2 |
|---|---|---|---|---|---|
| FR01SMSWW0411150100 | 1.5" /1.0" | 39.0 | 46.0 | 38.1 | 25.4 |
| FR01SMSWW0411200100 | 2.0" /1.0" | 57.0 | 68.0 | 50.8 | 25.4 |
| FR01SMSWW0411200150 | 2.0" 1.5" | 39.0 | 47.0 | 50.8 | 38.1 |
| FR01SMSWW0411250100 | 2.5" /1.0" | 57.0 | 100.0 | 63.5 | 25.4 |
| FR01SMSWW0411250150 | 2.5" /1.5" | 57.0 | 70.0 | 63.5 | 38.1 |
| FR01SMSWW0411250200 | 2.5" /2.0" | 39.0 | 44.0 | 63.5 | 50.8 |
| FR01SMSWW0411300100 | 3.0" /1.0" | 74.0 | 92.0 | 76.2 | 25.4 |
| FR01SMSWW0411300150 | 3.0" /1.5" | 74.0 | 92.0 | 76.2 | 38.1 |
| FR01SMSWW0411300200 | 3.0" /2.0" | 57.0 | 68.0 | 76.2 | 50.8 |
| FR01SMSWW0411300250 | 3.0" /2.5" | 39.0 | 47.0 | 76.2 | 63.5 |
| FR01SMSWW0411400200 | 4.0" /2.0" | 95.0 | 117.0 | 101.6 | 50.8 |
| FR01SMSWW0411400250 | 4.0" /2.5" | 78.0 | 94.0 | 101.6 | 63.5 |
| FR01SMSWW0411400300 | 4.0" /3.0" | 60.0 | 74.0 | 101.6 | 76.2 |
| FR02SMSWW0411150100 | |||||
| FR02SMSWW0411200100 | |||||
| FR02SMSWW0411200150 | |||||
| FR02SMSWW0411250100 | |||||
| FR02SMSWW0411250150 | |||||
| FR02SMSWW0411250200 | |||||
| FR02SMSWW0411300100 | |||||
| FR02SMSWW0411300150 | |||||
| FR02SMSWW0411300200 | |||||
| FR02SMSWW0411300250 | |||||
| FR02SMSWW0411400200 | |||||
| FR02SMSWW0411400250 | |||||
| FR02SMSWW0411400300 |
3A Standard
| Material Code | Size | A | D | D2 |
|---|---|---|---|---|
| FR013AWW0411150100 | 1.5" /1.0" | 50.8 | 38.1 | 25.4 |
| FR013AWW0411200100 | 2.0" /1.0" | 101.6 | 50.8 | 25.4 |
| FR013AWW0411200150 | 2.0" /1.5" | 50.8 | 50.8 | 38.1 |
| FR013AWW0411250150 | 2.5" /1.5" | 101.6 | 63.5 | 38.1 |
| FR013AWW0411250200 | 2.5" /2.0" | 50.8 | 63.5 | 50.8 |
| FR013AWW0411300150 | 3.0" /1.5" | 152.4 | 76.2 | 38.1 |
| FR013AWW0411300200 | 3.0" /2.0" | 101.6 | 76.2 | 50.8 |
| FR013AWW0411300250 | 3.0" /2.5" | 50.8 | 76.2 | 63.5 |
| FR013AWW0411400200 | 4.0" /2.0" | 203.2 | 101.6 | 50.8 |
| FR013AWW0411400250 | 4.0" /2.5" | 152.4 | 101.6 | 63.5 |
| FR013AWW0411400300 | 4.0" /3.0" | 101.6 | 101.6 | 76.2 |
| FR013AWW0411600300 | 6.0" /3.0" | 140.0 | 152.4 | 76.2 |
| FR013AWW0411600400 | 6.0" /4.0" | 140.0 | 152.4 | 101.6 |
| FR023AWW0411150100 | ||||
| FR023AWW0411200100 | ||||
| FR023AWW0411200150 | ||||
| FR023AWW0411250150 | ||||
| FR023AWW0411250200 | ||||
| FR023AWW0411300150 | ||||
| FR023AWW0411300200 | ||||
| FR023AWW0411300250 | ||||
| FR023AWW0411400200 | ||||
| FR023AWW0411400250 | ||||
| FR023AWW0411400300 | ||||
| FR023AWW0411600300 | ||||
| FR023AWW0411600400 |
Features
- Sanitary mirror polishing inside, smooth surface without dead corners, reduce medium residue and bacterial growth.
- Concentric tapered structure, stable flow and low fluid resistance.
- Stainless steel 304/316L optional, excellent corrosion resistance.
- Butt-weld ends, easy to form seamless hygienic pipeline.
- Strict dimension control, consistent wall thickness, good mechanical strength.
- Compliant with DIN, SMS, 3A and other sanitary standards.
Working Principle
Sanitary Concentric Reducer: It adopts concentric conical transition to smoothly change the pipe inner diameter. When medium flows through, the cross-section of flow channel gradually expands or shrinks, which reduces turbulence and dead zones. It achieves stable transition between large-diameter and small-diameter pipelines while maintaining hygienic flow path.
Why Choose KINGMAN
Transition Geometry Support
Inlet size, outlet size, reducer length and weld-end dimensions can be reviewed around your process line, giving custom concentric reducers a closer fit to existing sanitary piping.
7–15 Day Custom Lead
Project-specific sanitary fittings are typically produced within 7–15 working days after dimensions are approved, helping buyers plan around non-standard line-size transitions.
Material Verification
Spectrographic analysis confirms stainless steel composition before production, adding a defined material-control step for reducers used in food, pharmaceutical or high-purity fluid systems.
