Non-standard 304 316 Stainless Steel Fluid Joints
Key Product Features
- 100% CNC machined from solid stainless steel bar
- Custom thread standards: BSP, NPT, Metric, UNF, or special profiles
- Tight tolerance: ±0.05 mm on critical sealing surfaces
- Surface finish Ra 1.6–3.2 μm as-machined; electropolishing available
Standard Specifications
|
Parameter |
Specification |
|
Product Name |
Non-standard 304 316 Stainless Steel Fluid Joints |
|
Materials |
SS304, SS316, SS316L, SS303 (custom on request) |
|
Size Range |
M6 to M64 threads; custom flange and adapter sizes |
|
Tolerance |
±0.05 mm on sealing faces; ±0.1 mm on general dimensions |
|
Surface Finish |
Ra 1.6–6.3 μm machined; Ra 0.4 μm after electropolishing |
|
Thread Types |
BSPP, BSPT, NPT, NPTF, Metric, UN/UNF, custom |
|
Max Pressure |
Up to 600 bar (design-dependent) |
|
Temperature |
Range -196°C to 800°C |
|
Certifications |
ISO 9001; material certificates per EN 10204 3.1 |
Material Selection Guide
|
Grade |
Corrosion Resistance |
Best For |
|
304 |
Good general resistance |
Water, mild chemicals, food fluids |
|
316 |
Excellent chloride resistance |
Marine, chemical, pharmaceutical |
|
316L |
Superior weldability + corrosion |
High-purity, sanitary systems |
Manufacturing Workflow
- Drawing Review: 48-hour engineering feedback with DFM suggestions
- CNC Programming: CAM optimization for complex features
- Turning & Milling: Multi-axis machining for body and ports
- Thread Generation: Rolling or cutting per drawing spec
- Surface Treatment: Passivation, electropolishing, or deburring
- Dimensional Inspection: CMM, thread gauges, bore micrometers
- Final Packing: Individual PE bags or custom export cartons
Quality Control Checkpoints
|
Incoming material: |
Spectrometer analysis for chemical composition |
|
In-process: |
First-article inspection after each setup change |
|
Thread verification: |
Go/no-go gauges and optical measurement |
|
Dimensional: |
CMM on critical sealing faces and port positions |
|
Documentation: |
Inspection report and material certificate per batch |
Surface Treatment Options
|
Treatment |
Result |
Typical Use |
|
Passivation |
Restores chrome-oxide layer |
General corrosion protection |
|
Electropolishing |
Mirror-smooth, Ra <0.4 μm |
Pharmaceutical, food-grade |
|
Vibration Deburring |
Removes sharp edges |
Hydraulic systems, safety-critical |
Industry Applications
|
Food & Beverage |
Sanitary pipe adapters for CIP/SIP systems |
|
Chemical Processing |
Corrosion-resistant connectors for acid lines |
|
Pharmaceutical |
Electropolished joints for sterile fluid transfer |
|
Marine & Offshore |
316L joints for seawater cooling and ballast |
|
Hydraulics |
High-pressure fittings for industrial machinery |
Why Choose Our CNC Machined Fluid Joints?
Unlike cast fittings, our CNC machined stainless steel fluid joints are produced from certified solid bar stock. This eliminates internal porosity and ensures uniform wall thickness and thread integrity under cyclic pressure loading. Our Ningbo facility runs 24/7 CNC operations with direct engineering support for fast prototype turnaround.
FAQ
|
Q1: |
What is the minimum order quantity? |
|
A1: |
50 pieces for standard sizes; 100 pieces for fully custom designs. |
|
Q2: |
Which drawing formats do you accept? |
|
A2: |
STEP, IGES, PDF, DWG, DXF, and SolidWorks files. |
|
Q3: |
Can you match existing samples? |
|
A3: |
Yes. Send us the physical sample and we will reverse-engineer with full dimensional report. |
|
Q4: |
What is the sample lead time? |
|
A4: |
2–3 weeks for first article; 4–6 weeks for production batches. |
Get Your Custom Quotation
Upload your drawing or send your sample to receive a detailed machining proposal and competitive quotation within 48 hours.
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