After several years of ups and downs, the company has accumulated rich experience in a312 pipe, rectangular tubular profile, precision steel tubes operation and management. The company follows the high standards of "professional, classic and unique", and is well received and praised by customers for its excellent service. We insist on virtue and trustworthiness, honest service, and establish the enterprise brand on the cultivation of integrity character. We will adhere to the product quality system as a guarantee, while actively introducing and absorbing advanced technology at home and abroad. We are willing to establish a wide range of cooperative relations with domestic and foreign new and old customers based on the principle of sincere cooperation and mutual benefit.
Products Description
ASTM A269 Sanitary Food Capillary Stainless Steel Tube
Advantages of ASTM A269 Sanitary Food Capillary Stainless Steel Tube
- Surface Finish: Made of food-grade materials (such as 304 and 316L), the surface is polished to a high interior finish of Ra ≤ 0.8 μm.
- High and Low Temperature Resistance: Resistant to high-temperature sterilization and low-temperature refrigeration environments commonly encountered in food processing, ensuring stable performance.
- Consistent Dimensions: Tight tolerances ensure precise fluid transfer and instrumentation.
Uses of ASTM A269 Sanitary Food Capillary Stainless Steel Tube
- Instrumentation and control: Capillaries for flow measurement and dosing equipment, pressure gauges, and sensors.
- Chemical and laboratory applications: Analytical instruments requiring precise flow rates.
- Pharmaceutical and biotechnology: Process piping for pharmaceutical and vaccine manufacturing.
- Food and beverage processing: Milk, cream, and yogurt transfer lines.
- Dairy industry: Pasteurizer piping and ultra-high temperature processing lines.
Chemical Composition
| Grade | Carbon | Manganese | Silicon | Phosphorus | Sulfur | Chromium | Nickel | Molybdenum |
|---|---|---|---|---|---|---|---|---|
| 304 | ≤0.08% | ≤2.0% | ≤1.0% | ≤0.045% | ≤0.030% | 18.0–20.0% | 8.0–10.5% | – |
| 304L | ≤0.035% | ≤2.0% | ≤1.0% | ≤0.045% | ≤0.030% | 18.0–20.0% | 8.0–12.0% | – |
| 316 | ≤0.08% | ≤2.0% | ≤1.0% | ≤0.045% | ≤0.030% | 16.0–18.0% | 10.0–14.0% | 2.0–3.0% |
| 316L | ≤0.035% | ≤2.0% | ≤1.0% | ≤0.045% | ≤0.030% | 16.0–18.0% | 10.0–14.0% | 2.0–3.0% |
Mechanical Properties
To ensure surface quality, our sanitary tubing undergoes a full suite of ASTM bend and deformation tests per ASME A269. These tests, combined with specific raw material requirements, eddy current testing at the tubing mill, 100% bore clearance before mechanical polishing, and tighter OD and wall tolerances, result in a more consistent, higher-quality product.
| Property | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HB) |
| 304/304L | 205–215 | 515–750 | ≥ 40 | 201–217 |
| 316/316L | 205–220 | 515–750 | ≥ 40 | 217–248 |
Possible Alternative Grades
- ASTM A270: When more stringent hygiene requirements and a smooth surface finish (electropolishing) are required.
- AISI 904L: Suitable for highly acidic food processing and corrosive cleaning environments.
- Duplex stainless steel (S32205, S32750): Offers higher strength and enhanced resistance to chloride stress corrosion cracking.
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We have established a good reputation in Stainless Steel Tubing ASME AISI 304 316/L industry and promoted the re-establishment of quality services for market competition. We believe that any outstanding technology, product and service can only be recognized by customers and create value for customers if the quality is excellent. Through the guarantee of "platform and mechanism" and the double drive of "industrial operation and capital operation", we have achieved rapid and sustainable development.
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