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Technical Parameters
| Parameter | Specification | Test Standard |
| Working Pressure | 0.6-2.5 MPa | GB/T 14525 |
| Burst Pressure | ≥3 times working pressure | GB/T 5563 |
| Vacuum Resistance | -0.095 MPa | HG/T 21562 |
Product Advantages
· Extended Service Life: Service life of 8-10 years in corrosive media.
· Maintenance-Free: Self-lubricating PTFE lining requires no maintenance.
· Easy Installation: Multiple connection options available (flange/threaded).
· Cost-Effective: Total cost approximately 40% lower than pure metal pipelines.
Specifications
| Parameter | Standard Specifications | Customization Available |
| Bore Range | DN15-DN300 | DN15-DN300 |
| Length | 200-3000 mm | 100-6000 mm |
| Stainless Steel Material | 304/316L | Hastelloy alloy optional |
| PTFE Lining Thickness | 1.5-3.0 mm | 0.8-5.0 mm |
Application Fields
· Chemical Industry:
· ✅ Strong acid/alkali transfer pipelines
· ✅ Solvent recovery systems
· Pharmaceutical & Food:
· ✅ CIP/SIP pipeline systems
· ✅ High-purity media transfer
· Environmental Engineering:
· ✅ Exhaust gas treatment units
· ✅ Wastewater discharge systems
Quality Certifications
· Pressure Equipment Certification (PED 2014/68/EU)
· FDA 21 CFR 177.1550 (Food Grade)
· ISO 9001 Quality Management System
· ASME B31.3 Process Piping Code
Selection Guide
1. Highly Corrosive Conditions: Choose 316L + thickened PTFE lining (3mm).
2. High-Temperature Environment: Recommended working temperature ≤180°C.
3. High-Vibration Applications: Prioritize multi-convolution structure.
4. Food & Pharmaceutical: Specify mirror-polished version (Ra ≤ 0.8μm).
Basic Parameters
| Parameter | Standard Type | Reinforced Type | Test Standard |
| Construction | 304 SS + PTFE Lining | 316L SS + PTFE Lining | GB/T 14525 |
| Bore Range | DN15-DN300 | DN10-DN500 | HG/T 21562 |
| Working Temp. | -50°C to +180°C | -70°C to +200°C | GB/T 5568 |
| Suitable Media | pH 0-14 corrosive media | Media containing solid particles | - |
Material Specifications
| Component | Standard Material | Optional Material | Thickness/Parameter |
| Bellows Shell | 304 Stainless Steel | 316L / Hastelloy Alloy | 0.3-1.2 mm |
| Lining Layer | Pure PTFE | PTFE + 15% Glass Fiber | 1.5-3.0 mm |
| Flange/Connector | 304 Stainless Steel | 316L / Titanium Alloy | PN16 / DIN Standard |
| Reinforcing Ring | 304 Stainless Steel | 316 Stainless Steel | Designed per pressure rating |
Product Specification Comparison
| Bore (DN) | Outer Diameter (mm) | Standard Length (mm) | Number of Convolutions | Weight (kg/m) |
| 15 | 22 | 200 | 4-6 | 0.8-1.2 |
| 50 | 63 | 300 | 6-8 | 3.5-4.5 |
| 100 | 125 | 500 | 8-10 | 8-10 |
| 200 | 250 | 800 | 10-12 | 25-30 |
Certification Standards
| Certification Type | Standard No. | Applicable Product Range |
| Pressure Equipment | PED 2014/68/EU | Products above DN50 |
| Food Grade | FDA 21 CFR 177.1550 | Pharmaceutical/Food Grade Models |
| Industrial Safety | ASME B31.3 | Chemical Process Piping |
| Explosion Protection | ATEX 2014/34/EU | Flammable & Explosive Environments |
Selection Reference Table
| Working Condition | Recommended Model | Alternative Solution |
| Strong Acid Transfer | 316L + 3mm PTFE Lining | Hastelloy Alloy Bellows |
| Food Production | Mirror Polished (Ra ≤ 0.8μm) | Sanitary Rubber Hose |
| High-Vibration Environment | Multi-Convolution Type with Limit Rod | Metal Hose + Vibration Absorber |
| High-Purity Media | Electropolished + High-Purity PTFE | PFA-Lined Pipe |
