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Help CenterStainless Steel Pipe 304 316L 1 Inch 2 Inch 3 Inch 4 Inch for Pharmaceutical Piping System
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Hemaokang Steel (Shandong) Co., Ltd. is a dedicated supplier of premium stainless steel pipes, specializing in 304 and 316L grades for critical pharmaceutical piping systems. With an annual export value exceeding US$50 million and a team of 51–100 experienced professionals, we deliver pipes that meet the strictest hygiene, corrosion resistance, and dimensional accuracy standards required in pharmaceutical manufacturing. Our ISO9001-certified production processes ensure consistent quality across every batch, from 1-inch to 4-inch diameters.
These pipes are engineered to handle sterile fluids, high-purity water, and aggressive cleaning agents commonly used in pharmaceutical plants. The combination of 304 (general corrosion resistance) and 316L (superior resistance to chlorides and acids) gives you the flexibility to choose the right material for your specific process conditions. Each pipe is manufactured with precise wall thickness options (Schedule 10S, 40S, or custom) and smooth internal surfaces to minimize bacterial adhesion and facilitate easy cleaning.
Key Features & Technical Specifications
- Material Grades: 304 (UNS S30400) and 316L (UNS S31603) – low carbon version reduces risk of intergranular corrosion after welding.
- Size Range: 1 inch, 2 inch, 3 inch, and 4 inch nominal diameters – other sizes available upon request.
- Wall Thickness: Standard Schedule 10S (0.065″ to 0.120″) and Schedule 40S (0.133″ to 0.237″); custom schedules supported.
- Manufacturing Process: Seamless (hot finished or cold drawn) and welded (longitudinal or spiral) with full penetration welds – optional.
- Surface Finish: Pickled & annealed (2B finish) or bright annealed (BA) – surface roughness Ra ≤ 0.8 μm for pharmaceutical applications.
- End Connections: Plain ends, beveled ends, or threaded ends – suitable for tri-clamp, butt-weld, or sanitary fittings.
- Compliance: Manufactured in accordance with ASTM A312 / A269, ASME B36.19, and other relevant standards.
- Testing & Inspection: Hydrostatic testing, eddy current testing, PMI (positive material identification), and dimensional checks – all traceable.
| Parameter | 304 Grade | 316L Grade |
|---|---|---|
| Tensile Strength (min) | 515 MPa | 485 MPa |
| Yield Strength (min) | 205 MPa | 170 MPa |
| Elongation | 35% | 40% |
| Max Operating Temperature | 870°C (continuous) | 800°C (continuous) |
| Corrosion Resistance | Good in general environments | Excellent in chloride/acid environments |
Benefits for Pharmaceutical Piping Systems
- Hygienic Design: Smooth internal surfaces and crevice-free construction prevent microbial growth, supporting CIP/SIP (Clean-in-Place / Sterilize-in-Place) processes.
- Chemical Compatibility: 316L withstands harsh cleaning agents (e.g., nitric acid, sodium hydroxide) and high-purity water (WFI) without leaching or pitting.
- Weldability: Low carbon content in 316L minimizes carbide precipitation, ensuring strong, corrosion-resistant weld joints.
- Dimensional Consistency: Tight tolerances (±0.5% on diameter, ±10% on wall thickness) allow trouble-free installation with standard fittings and valves.
- Long Service Life: Properly maintained stainless steel pipes can last decades in pharmaceutical environments, reducing replacement costs.
- Customization: We can supply pipes in cut lengths, polished to specific Ra values, or with special end preparations to match your system design.
Why Choose Hemaokang Steel?
Since our establishment in 2025, we have rapidly built a reputation for reliable quality and competitive pricing. Our annual export volume of US$50–100 million demonstrates the trust of clients across North America, South America, Europe, Asia, Africa, and Oceania. With ISO9001 certification governing our quality management system, every pipe undergoes rigorous inspection before shipment. Our team of 51–100 employees includes experienced metallurgists and production engineers who ensure that your order meets the most demanding specifications. We also offer free technical consultation to help you select the appropriate grade, size, and finish for your pharmaceutical piping project.
Frequently Asked Questions (FAQ)
- What is the difference between 304 and 316L for pharmaceutical piping? 316L offers superior resistance to chlorides and acidic cleaning agents, making it preferred for highly corrosive environments (e.g., WFI loops, CIP systems). 304 is suitable for less aggressive media and general utility lines.
- Can you supply pipes with a pharmaceutical-grade surface finish (Ra ≤ 0.6 μm)? Yes, we can provide bright annealed or mechanically polished finishes with surface roughness as low as Ra 0.4 μm. Please specify your requirement when ordering.
- What wall thickness do you recommend for a pharmaceutical water system? Schedule 10S is commonly used for low-pressure, high-purity water lines. For higher pressure or steam applications, Schedule 40S or custom schedules are available. Our technical team can assist with selection.
- Do you offer third-party inspection services? Yes, we can arrange for third-party inspection (e.g., SGS, BV) at your request. All relevant costs and procedures are transparent.
- What is your minimum order quantity (MOQ)? For standard sizes (1–4 inch), MOQ is typically 100 meters per size. For non-standard sizes or special finishes, MOQ may vary – please contact us for details.
- How do you ensure the pipes are free from contamination? Our pipes are manufactured in a clean environment, pickled and passivated after fabrication, and individually packed in plastic caps or sealed bags to prevent contamination during storage and transport.
- Can you provide material traceability documents? Yes, we issue mill test certificates (MTC) per EN 10204 3.1, including chemical composition, mechanical properties, and heat numbers for full traceability.
- What is the typical lead time for an order? For standard sizes and grades, lead time is 15–25 working days after deposit. For large quantities or special orders, please allow 30–45 days.
Contact us today to discuss your pharmaceutical piping requirements. Our experienced sales team will provide a tailored quotation and technical support to ensure your project runs smoothly.
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