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Hemaokang Steel (Shandong) Co., Ltd., established in 2025 with an annual export value exceeding US$50 million, proudly presents our premium 430 Stainless Steel Pipe Seamless Annealed 1/4inch to 4inch Schedule 80. As a reliable manufacturer based in Liaocheng, Shandong, we combine advanced production technology with strict quality control to deliver seamless pipes that meet the demanding requirements of industrial applications. Our 430 grade stainless steel offers excellent corrosion resistance and heat resistance, making it a cost-effective choice for various sectors including automotive, food processing, and heat exchangers.
Our 430 stainless steel seamless pipes are manufactured using state-of-the-art cold drawing and annealing processes, ensuring uniform wall thickness and superior mechanical properties. The Schedule 80 wall thickness provides extra strength and durability for high-pressure and high-temperature environments. Available in sizes from 1/4 inch to 4 inch outer diameter, these pipes are fully annealed to relieve internal stresses and improve formability, allowing for bending, flanging, and welding without cracking.
Below are the key product specifications and typical dimensions:
| Parameter | Details |
| Grade | 430 (UNS S43000) |
| Standard | ASTM A268, A789 (available upon request) |
| Size Range | 1/4" (6.35mm) - 4" (101.6mm) OD |
| Schedule | 80 (Extra Heavy Wall) |
| Wall Thickness | Varies per size (e.g., 1/4" Sch80: 0.113" / 2.87mm; 4" Sch80: 0.337" / 8.56mm) |
| Length | Standard 6m, 12m; custom lengths available |
| Surface Condition | Annealed, pickled (or bright annealed on request) |
| End Finish | Plain ends, beveled, or threaded as per order |
Key Features and Benefits
- Seamless Construction: No weld seams means higher strength, better pressure resistance, and lower risk of corrosion. Perfect for critical applications.
- Annealed Condition: The full annealing process ensures optimal ductility and toughness, making the pipe easier to fabricate (bend, cut, weld) without cracking.
- Cost-Effective 430 Grade: Ferritic stainless steel offers good corrosion resistance at a lower cost compared to austenitic grades like 304/316, especially in mild environments.
- Schedule 80 Wall Thickness: Provides an extra margin of safety for high-pressure systems, reducing the risk of failure.
- Wide Size Range: From 1/4 inch to 4 inch, suitable for instrumentation lines, hydraulic systems, chemical processing, and structural applications.
- Customizable Options: Length, end finish, and packaging can be tailored to your specific requirements.
Typical Applications
- Automotive exhaust systems and heat exchangers
- Food processing equipment (e.g., dairy, brewery)
- Condenser and evaporator tubing
- Chemical and petrochemical piping
- Oil and gas instrumentation lines
- General industrial structural supports
Our commitment to quality is backed by ISO9001 certification, ensuring every pipe is rigorously tested for dimensional accuracy, chemical composition, and mechanical properties. With a team of 51-100 skilled employees, we maintain consistent production capacity and on-time delivery. Our main markets span North America, South America, Europe, Southeast Asia, Africa, Oceania, the Middle East, and more – a testament to our global reliability.
We also offer value-added services such as cutting, threading, and special packaging (e.g., wooden crates or steel bundles) for international shipping. Our annual export value of US$50 million to US$100 million reflects our ability to handle large-volume orders with competitive pricing. All products are manufactured in our Liaocheng facility with strict compliance to international standards.
At Hemaokang Steel, we understand that your projects demand precision and durability. That is why we provide detailed mill test certificates with every shipment, and our technical team is available to assist with material selection and application support. Trust us as your long-term partner for stainless steel piping solutions.
Contact us today for a quotation or to discuss your specific requirements. We are ready to deliver high-quality 430 stainless steel seamless annealed Schedule 80 pipes that meet your exact specifications.
Frequently Asked Questions
Q1: What is the difference between seamless and welded pipe for this product?
Seamless pipe is manufactured by extruding a solid billet, resulting in no longitudinal weld seam. This provides superior strength and pressure integrity compared to welded pipe, especially for high-pressure applications. Our 430 stainless steel seamless pipe is ideal for critical systems where weld failure is unacceptable.
Q2: Can the pipe be supplied in other schedules besides Schedule 80?
Yes, we can produce this pipe in other schedules (e.g., Sch 10, Sch 40, Sch 160) on request. However, the standard offering for this product line is Schedule 80. Please contact our sales team to discuss custom wall thicknesses.
Q3: Is the pipe suitable for high-temperature applications?
430 stainless steel is ferritic and offers good oxidation resistance up to 1500°F (815°C) in continuous service. However, it has lower creep strength than austenitic grades. For applications above 800°F, we recommend evaluating operating conditions. Our team can provide technical guidance.
Q4: What finishing options are available for the pipe ends?
Standard ends are plain cut. Beveled ends for welding or threaded ends are available upon request. We can also supply with couplings or caps as needed.
Q5: Do you provide mill test certificates (MTC) with each shipment?
Absolutely. Every order includes a MTC traceable to the heat number, confirming chemical composition, mechanical properties, and dimensional inspection. Third-party inspection is also available.
Q6: What is the minimum order quantity (MOQ)?
For standard sizes, MOQ is typically 500 kg (approximately 1100 lbs). For non-standard sizes or special finishes, MOQ may vary. We welcome small trial orders for sample testing.
Q7: How long does production and delivery take?
For standard sizes and quantities, production time is 15-20 days after order confirmation. Shipping time depends on destination. We offer both sea and air freight options, with packing suitable for long-distance transport.
Q8: Is the pipe suitable for food contact applications?
430 stainless steel is often used in food processing equipment where non-toxic and corrosion-resistant surfaces are required. However, for direct food contact, we recommend checking local regulations and ensuring the surface finish meets hygienic standards (e.g., 2B or polished). Our pipes can be supplied with an appropriate surface finish.
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