ASTM A403 WP316L Concentric & Eccentric Reducer | ANSI B16.9 Stainless Steel Pipe Fittings
C&N is a professional ASTM A403 WP316L reducer manufacturer and supplier in China, specializing in high-quality stainless steel pipe fittings for global industrial applications.
We supply a full range of WP316L concentric reducer and eccentric reducer in accordance with ANSI B16.9 / ASME standards, widely used in oil & gas, chemical, and piping systems.
What is ASTM A403 WP316L Reducer
ASTM A403 WP316L reducer is a type of buttweld stainless steel pipe fitting used to connect pipes of different diameters.
There are two main types:
- Concentric Reducer – used in vertical pipelines
- Eccentric Reducer – used in horizontal pipelines to prevent air accumulation
WP316L material provides:
- Excellent corrosion resistance
- Low carbon content (≤0.035%)
- Good weldability
- High performance in chemical environments
ASTM A403 WP316L Reducer Specifications
| Specification | Details |
|---|---|
| Standard | ASTM A403 / ASME SA403 |
| Dimensions | ANSI / ASME B16.9, B16.28, MSS-SP-43 |
| Size | 1/2” NB to 48” NB |
| Schedule | SCH 10S, 40S, 80S, 160S, XXS |
| Type | Seamless / Welded |
| Type of Reducer | Concentric / Eccentric |
Chemical Composition of WP316L Reducer
| C | Mn | Si | P | S | Ni | Cr | Mo |
|---|---|---|---|---|---|---|---|
| ≤0.035 | ≤2.0 | ≤1.0 | ≤0.04 | ≤0.03 | 10–16 | 18–20 | 2–3 |
Mechanical Properties
| Tensile Strength | Yield Strength | Elongation |
|---|---|---|
| ≥515 MPa | ≥205 MPa | ≥35% |
Available Materials
We manufacture a wide range of pipe fittings in different materials:
Stainless Steel
- ASTM A403 WP304 / 304L / 304H
- ASTM A403 WP316 / 316L
- ASTM A403 WP317 / 317L
- ASTM A403 WP321 / WP347
- ASTM A403 WP310 / 904L
Sizes & Manufacturing Range
- Seamless BW Fittings: 1/2” NB – 24” NB
- Welded BW Fittings: 1/2” NB – 48” NB
Inspection & Documentation
- In-house quality inspection
- Third-party inspection (SGS / BV / TUV)
- Mill Test Certificate (EN 10204 3.1) available before shipment
Packaging & Marking
- Standard export wooden cases (fumigation-free)
- Customized marking available
- Protective packing for long-distance shipment
Why Choose Our WP316L Reducer
- ✔ Experienced manufacturer in China
- ✔ Strict quality control system
- ✔ Competitive factory price
- ✔ Fast delivery & global export
- ✔ Custom sizes available
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