Yaolong Hygienic is a trusted stainless steel sanitary tube manufacturer with over 25 years of manufacturing and export experience, supplying high-quality hygienic tubing to customers in more than 50 countries. We specialize in TP304L and TP316L stainless steel sanitary tubing manufactured to international standards including ASTM A270, ASME BPE, DIN 11850, DIN 10357, and 3-A sanitary requirements.
Our sanitary tubes are engineered for demanding food, beverage, dairy, brewery, pharmaceutical, biotechnology, and other high-purity fluid processing applications. With a 40,000 m² production base, advanced bright annealing and polishing capabilities, and strict quality control, Yaolong provides both standard tubing and customized solutions for different diameters, wall thicknesses, surface finishes, and project specifications.
Request a quote or send us your tube specification for a tailored sanitary tubing solution.
3-A Stainless Steel Sanitary Tubing is manufactured to ASTM A270 and 3-A 33-03 sanitary requirements using high-purity TP304L or TP316L stainless steel.
Available with mechanical polishing or electropolishing (EP), it provides a smooth internal surface, excellent corrosion resistance, and reliable compatibility with orbital welding and sanitary fittings.
It is widely used in dairy, food, biopharmaceutical, and other high-purity processing systems.
ASME BPE Stainless Steel Sanitary Tubing is designed for pharmaceutical, biotechnology, and high-purity bioprocessing systems. Manufactured from premium 316L stainless steel, it offers excellent corrosion resistance, weldability, and hygienic performance. Available with mechanical polishing or electropolishing (EP), the tubing can achieve internal surface roughness down to Ra < 0.38 μm, with surface finishes from SF1 to SF4. Each tube is carefully inspected and protected for use in critical sterile fluid systems.
ASTM A270 Stainless Steel Sanitary Tubing is widely used in food, beverage, dairy, brewery, and pharmaceutical processing systems where hygiene, cleanability, and corrosion resistance are essential. Available in 304 and 316L stainless steel, it can be supplied with BA, 2B, or polished finishes and internal surface roughness down to Ra ≤ 0.6 μm. With precise dimensions and excellent compatibility with sanitary fittings and valves, it provides a reliable solution for hygienic fluid transfer systems.
DIN EN 10357 Stainless Steel Sanitary Tubing is designed for hygienic welded piping systems used in food, beverage, dairy, brewery, pharmaceutical, and biotechnology applications. Commonly available in 304 (1.4301) and 316L (1.4404) stainless steel, it offers standardized dimensions from DN10 to DN300 and smooth internal surfaces with roughness typically down to Ra ≤ 0.8 μm. Its excellent cleanability and compatibility with European sanitary fittings make it ideal for modern CIP/SIP hygienic piping systems.
DIN 11850 Stainless Steel Sanitary Tubing is widely used in food, beverage, dairy, brewery, and pharmaceutical processing systems, particularly in projects following European hygienic piping standards. Available in 304 and 316L stainless steel, it offers precise dimensions, smooth internal surfaces, and reliable compatibility with DIN/EN sanitary fittings and valves. Internal surface roughness is typically Ra ≤ 0.8 μm, with finer finishes available for higher-purity applications and demanding CIP/SIP systems.
6" 152.4mm Stainless Steel Tube is manufactured from TP304/304L and TP316/316L stainless steel with a standard 2.77 mm wall thickness, offering excellent strength, corrosion resistance, and dimensional stability. Produced to ASTM A270, AS 1528.1, and 3-A sanitary requirements, it features automatic TIG welding, bright annealing, and polished internal surfaces down to Ra ≤ 0.51 μm. It is suitable for brewery headers, dairy manifolds, central CIP lines, and high-capacity liquid cooling systems.
Dairy Stainless Steel Sanitary Tube is manufactured from 304/304L and 316/316L stainless steel in accordance with 3-A, ASTM A270, and DIN 11850 / EN 10357 requirements. Produced with automatic TIG welding, weld bead treatment, and bright annealing, it provides a smooth, corrosion-resistant internal surface suitable for intensive hygienic processing. With finishes down to Ra ≤ 0.5 μm, it is widely used in milk reception, HTST/UHT processing, cheese and whey production, yogurt lines, and aseptic packaging systems.
Brewery Stainless Steel Sanitary Tubing is manufactured from TP304/304L and 316/316L stainless steel in accordance with ASTM A270, DIN 11850, and 3-A sanitary requirements. Produced with automatic TIG welding, weld bead treatment, and bright annealing, it provides excellent corrosion resistance and a smooth hygienic internal surface. With finishes down to Ra ≤ 0.5 μm, it is ideal for brewhouse systems, fermenters, brite tanks, CIP/SIP lines, and beer packaging systems.
Food Grade Stainless Steel Sanitary Tube is manufactured from 304/304L and 316/316L stainless steel to meet the hygienic requirements of food, beverage, dairy, brewery, and condiment processing systems. Produced in accordance with ASTM A270 and 3-A sanitary requirements, it is available in sizes from 1/2" to 12" with mechanically polished or electropolished internal surfaces. Smooth finishes down to Ra ≤ 0.4 μm help improve cleanability, reduce product residue, and support efficient CIP cleaning.
Yaolong Hygienic supplies stainless steel sanitary tubing in multiple materials, standards, dimensions, and surface finishes to meet different hygienic processing requirements. Standard and customized specifications are available for food, beverage, dairy, brewery, pharmaceutical, biotechnology, and other high-purity fluid systems.
| Specification | Available Options |
|---|---|
| Material Grades | TP304, TP304L, TP316, TP316L |
| Standards | ASTM A270, ASME BPE, DIN 11850, DIN EN 10357, 3-A sanitary requirements, AS 1528.1 |
| Tube Type | Welded stainless steel sanitary tubing |
| Outside Diameter | Available according to the selected sanitary standard; standard and large-diameter sizes available |
| Wall Thickness | Multiple standard and customized wall thicknesses |
| Surface Finish | Bright Annealed (BA), Mechanical Polishing (MP), Electropolishing (EP) |
| Internal Surface Roughness | Typically Ra ≤ 0.8 μm, with finer finishes down to approximately Ra ≤ 0.4 μm depending on specification |
| Tube Length | Standard mill lengths or customized lengths |
| Manufacturing Process | Roll forming, automatic TIG welding, weld bead treatment, bright annealing, polishing |
| Inspection & Testing | Eddy current testing, dimensional inspection, surface roughness inspection, visual inspection, and other specified testing |
| Documentation | Material test certificates and inspection documentation available according to order requirements |
| Customization | Diameter, wall thickness, material grade, surface finish, internal roughness, length, packaging, and project-specific requirements |
For project-specific sanitary tubing requirements, send Yaolong Hygienic your standard, material grade, tube size, wall thickness, surface finish, length, and required quantity for specification confirmation and quotation.
Yaolong Hygienic manufactures stainless steel sanitary tubing to multiple international standards, allowing customers to select the most suitable specification for their industry, piping system, and hygienic requirements.
ASTM A270 sanitary tubing is widely specified for hygienic process systems in the food, beverage, dairy, brewery, and pharmaceutical industries. It is designed for sanitary fluid transfer and includes requirements covering material, dimensions, heat treatment, surface condition, and testing. Yaolong supplies ASTM A270 tubing in 304/304L and 316/316L stainless steel, with multiple surface finishes and internal roughness options to support cleanability and corrosion resistance.
Stainless Steel ASTM A 270 3A Standards Specification:
| Size | OD (inch) | OD (mm) | WT (inch) | WT (mm) | Length |
|---|---|---|---|---|---|
| 1/2" | 0.5 | 12.7 | 0.065 | 1.65 | 20 ft / 6m / 6.096m |
| 3/4" | 0.75 | 19.05 | 0.065 | 1.65 | 20 ft / 6m / 6.096m |
| 1" | 1 | 25.4 | 0.065 | 1.65 | 20 ft / 6m / 6.096m |
| 1.5" | 1.5 | 38.1 | 0.065 | 1.65 | 20 ft / 6m / 6.096m |
| 2" | 2 | 50.8 | 0.065 | 1.65 | 20 ft / 6m / 6.096m |
| 2.5" | 2.5 | 63.5 | 0.065 | 1.65 | 20 ft / 6m / 6.096m |
| 3" | 3 | 76.2 | 0.065 | 1.65 | 20 ft / 6m / 6.096m |
| 4" | 4 | 101.6 | 0.083 | 2.11 | 20 ft / 6m / 6.096m |
| 6" | 6 | 152.4 | 0.109 | 2.77 | 20 ft / 6m / 6.096m |
| 8" | 8 | 203.2 | 0.109 | 2.77 | 20 ft / 6m / 6.096m |
| 10" | 10 | 254 | 0.109 | 2.77 | 20 ft / 6m / 6.096m |
Production standard available:
ASTM A270-S2, EN10357, DIN11850, AS 1528.1, ISO 2037
ASME BPE sanitary tubing is primarily used in pharmaceutical, biotechnology, bioprocessing, and other high-purity applications where strict control of surface quality, weldability, cleanliness, and contamination risk is required. Yaolong supplies high-purity 316L stainless steel tubing with mechanically polished and electropolished finishes, including low-Ra internal surfaces suitable for sterile process lines, purified water systems, and other critical fluid applications.
ASTM Chemical Composition Requirements (Max. %)
| Elements | TP 316L |
|---|---|
| (C) Carbon, max | 0.03 |
| (Mn) Manganese, max | 2 |
| (P) Phosphorus, max | 0.045 |
| (S) Sulphur, max | 0.03 |
| (S) Sulphur, A270-S2 | 0.005–0.017 |
| (Si) Silicon, max | 0.75 |
| (Ni) Nickel | 10.0–14.0 |
| (Cr) Chromium | 16.0–18.0 |
| (Mo) Molybdenum | 2.0–3.0 |
Raw material option: POSCO, Outokumpu Oyj, Acerinox Group S.A.,
3-A sanitary tubing is commonly used in dairy, food, beverage, and other hygienic processing systems where cleanability and food safety are essential. Manufactured from corrosion-resistant stainless steel with smooth internal surfaces, it is designed to support efficient CIP cleaning and minimize product residue. Yaolong supplies 3-A sanitary tubing in 304L and 316L, with polished surface finishes and dimensions compatible with sanitary fittings, valves, clamps, and process equipment.
DIN 11850 and DIN EN 10357 sanitary tubing are widely used in European-style hygienic piping systems for food, dairy, beverage, brewery, pharmaceutical, and chemical processing. These standards provide standardized dimensions and surface requirements for stainless steel process tubing. Yaolong supplies 304 and 316L tubing with polished internal surfaces, accurate dimensional tolerances, and compatibility with DIN/EN sanitary fittings and valves for reliable hygienic process installations.
TP304L and TP316L are the two most commonly selected stainless steel grades for sanitary tubing. Both offer good hygienic performance and weldability, but TP316L provides improved corrosion resistance in more demanding process environments.
| Comparison | TP304L | TP316L |
|---|---|---|
| Corrosion Resistance | High | Higher |
| Chloride Resistance | Moderate | Better |
| Typical Applications | Food, beverage, dairy, brewery, and general sanitary processing | Pharmaceutical, biotechnology, high-purity processing, and more corrosive environments |
| Cleaning Environment | Suitable for standard CIP conditions | Better suited to more aggressive chemicals and frequent sanitation cycles |
| Cost | Lower | Higher |
| Best For | General hygienic processing applications | More demanding sanitary and high-purity applications |
The correct material depends on the process fluid, chloride exposure, operating temperature, cleaning chemicals, hygienic standard, and service conditions.
Not sure which material is suitable? Send Yaolong Hygienic your operating medium, temperature, cleaning process, and required standard for material selection support.
Surface finish is a critical factor in the performance of stainless steel sanitary tubing, especially in hygienic and high-purity process systems. A smoother internal surface helps reduce product residue, improves cleanability, and lowers the risk of bacterial or particle accumulation.
Yaolong Hygienic offers several surface finishing options to meet different sanitary and process requirements:
Bright Annealed (BA) tubing is heat treated in a controlled protective atmosphere to produce a clean, smooth, oxidation-resistant surface. BA finishes provide good corrosion resistance and are commonly used in food, beverage, dairy, and general hygienic processing systems.
Mechanical Polishing (MP) uses progressively finer abrasives to reduce surface roughness and create a smoother internal or external finish. Depending on the application, Yaolong can provide polished surfaces with internal roughness typically around Ra ≤ 0.8 μm and finer finishes down to approximately Ra ≤ 0.5 μm.
Electropolishing (EP) removes a controlled microscopic layer from the stainless steel surface, helping create an even smoother and cleaner finish. Internal roughness can reach approximately Ra ≤ 0.4 μm, making EP tubing particularly suitable for pharmaceutical, biotechnology, semiconductor, and other high-purity applications.
| Surface Finish | Typical Characteristics | Common Applications |
|---|---|---|
| BA | Smooth, clean, bright surface with good corrosion resistance | Food, beverage, dairy, general hygienic processing |
| MP | Controlled surface roughness with improved cleanability | Food, dairy, brewery, pharmaceutical |
| EP | Very smooth, low-contamination surface | Pharmaceutical, biotech, semiconductor, high-purity systems |
Both internal and external surfaces can be finished according to project requirements. The required Ra value should be selected based on the product being transferred, cleaning method, industry standard, and hygienic risk level.
Yaolong Hygienic stainless steel sanitary tubes are designed for process environments where cleanliness, corrosion resistance, smooth fluid transfer, and reliable CIP/SIP cleaning are essential. Different materials, standards, dimensions, and surface finishes can be selected according to the hygiene requirements of each industry.
Used in hygienic production lines for sauces, edible oils, condiments, prepared foods, and other food products. Smooth internal surfaces help reduce residue buildup and support efficient cleaning between production cycles.
Suitable for milk reception, pasteurization, yogurt production, cheese and whey processing, and other dairy transfer systems. Sanitary tubing helps maintain product hygiene while supporting frequent CIP and sterilization procedures.
Applied in beer, soft drink, juice, water, and other beverage processing systems, including brewhouses, fermentation lines, storage tanks, transfer headers, and packaging lines.
Pharmaceutical & Bioprocessing
High-purity sanitary tubing with tighter surface-finish and cleanliness requirements is used in pharmaceutical, biotechnology, purified water, and sterile process systems where contamination control is critical.
Choosing the right stainless steel sanitary tube manufacturer requires more than comparing product specifications. Manufacturing experience, production capacity, surface-finishing capability, quality control, and compliance with international standards all directly affect the reliability of a hygienic piping system. Yaolong Hygienic combines these capabilities within one integrated manufacturing base.
Yaolong Hygienic has more than 25 years of manufacturing and export experience, supplying stainless steel sanitary tubing to customers in food, beverage, dairy, brewery, pharmaceutical, biotechnology, and other high-purity industries. Long-term international experience also helps us better understand different standards, documentation requirements, and project specifications.
Our modern 40,000 m² production facility supports an annual production capacity of approximately 20,000 tons. This scale enables Yaolong to handle both regular production orders and large-volume project requirements while maintaining stable supply. Our sanitary tubing products are exported to customers in more than 50 countries worldwide.
Yaolong integrates advanced production and surface-finishing technologies, including automated TIG welding, online bright annealing (BA), mechanical polishing (MP), and electropolishing (EP). These processes help maintain consistent dimensions, weld quality, surface condition, and internal cleanliness across different sanitary tubing specifications.
Our sanitary tubing is manufactured according to major international hygienic standards, including ASTM A270, ASME BPE, DIN 11850, and related sanitary requirements. Yaolong's quality system is supported by certifications including 3-A SSI, ISO 9001, and TÜV, helping customers meet procurement, engineering, and quality-audit requirements in international projects.
Quality control is integrated throughout the production process. Depending on the tubing specification and project requirements, inspection can include dimensional checks, surface roughness measurement, eddy current testing, visual inspection, material traceability, and helium leak detection where applicable. Material and inspection documentation can also be supplied according to order requirements, providing greater traceability for critical hygienic and high-purity piping systems.
Consistent quality control is essential for stainless steel sanitary tubing used in hygienic and high-purity process systems. Yaolong Hygienic applies inspection and verification throughout production to help ensure material consistency, dimensional accuracy, surface quality, weld integrity, and traceability.
Key quality-control procedures include:
For critical hygienic and high-purity projects, customers can also request additional inspection or documentation requirements during order confirmation.
In addition to standard sanitary tubing, Yaolong Hygienic provides custom stainless steel sanitary tube manufacturing for projects with specific dimensional, surface, material, or packaging requirements.
Customers can specify:
Our engineering and production teams can review drawings, purchasing specifications, and project requirements before production to confirm manufacturability and the appropriate sanitary tube configuration.
Send us your tube drawing, technical specification, or purchasing list for quotation and production evaluation.
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