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304L Stainless Steel Pipe 3/4 Inch NPT Threaded Schedule 80 for Chemical Processing
Product Spotlights
304L low carbon stainless steel for superior corrosion resistance after welding. NPT threaded ends for leak‑tight connections. Schedule 80 heavy wall for high pressure up to 2000 psi. Customizable lengths and ISO9001 certified quality. Ideal for chemical processing, oil & gas, and industrial piping.
Negotiable
MOQ: 1 Ton (Price negotiable depending on order volume and customization)
Key Specifications
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Material:
Other, 304L Stainless Steel
Size:
3/4 Inch (DN20)
Connection Type:
NPT Threaded
Payment & Shipping
Payment Methods:
Port of Shipment:
Qingdao Port
Delivery Detail:
7 days
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Material
Other, 304L Stainless Steel
Size
3/4 Inch (DN20)
Connection Type
NPT Threaded
Wall Thickness
Schedule 80
Standard
ASTM A312 / ASME SA312
Surface Finish
Pickled, Annealed
Length
Customizable (up to 6m)
Application
Chemical Processing, Oil & Gas
Certification
ISO9001
Working Pressure
High pressure (up to 2000 psi approx.)
Hemaokang Steel (Shandong) Co., Ltd., established in 2025, brings over a decade of collective expertise in the steel industry. Our 304L Stainless Steel Pipe 3/4 Inch NPT Threaded Schedule 80 is engineered specifically for demanding chemical processing environments. Combining low carbon content for enhanced weldability and corrosion resistance with a robust schedule 80 wall thickness, this product delivers reliable performance under high pressure and corrosive conditions. As a trusted supplier with an annual export value exceeding US$50 million, we ensure that every pipe meets stringent quality standards.
Key Features & Technical Specifications
- Material Excellence: 304L stainless steel (low carbon) offers superior resistance to intergranular corrosion after welding, making it ideal for chemical processing where aggressive media are present.
- Precision Threading: NPT (National Pipe Taper) threads are machined to ANSI B1.20.1 standards, ensuring leak‑tight connections when paired with compatible fittings.
- Schedule 80 Wall Thickness: Heavier wall than schedule 40 provides higher pressure rating and greater mechanical strength for critical applications.
- Size: 3/4 inch nominal diameter (DN20) – a common size for chemical transfer lines, instrumentation, and process piping.
- Surface Finish: Pickled and annealed finish removes scale and oxides, improving corrosion resistance and providing a clean, bright surface.
- Length Options: Available in standard random lengths (20 ft / 6 m) or custom lengths upon request.
| Parameter | Value |
|---|---|
| Material Grade | 304L (UNS S30403) |
| Nominal Diameter | 3/4 inch (DN20) |
| Wall Thickness (Schedule 80) | 0.154 inch (3.91 mm) |
| Outside Diameter | 1.050 inch (26.67 mm) |
| Thread Standard | NPT (ANSI B1.20.1) |
| Working Pressure (approx.) | 2,000 psi (13.8 MPa) at ambient temperature |
| Temperature Range | -425°F to 800°F (-254°C to 427°C) |
| Standards Compliance | ASTM A312, ASME SA312, ISO9001 |
Advantages for Chemical Processing Applications
- Corrosion Resistance: 304L’s low carbon content minimizes carbide precipitation during welding, maintaining resistance to a wide range of chemicals including acids, alkalis, and organic compounds.
- High Pressure Integrity: Schedule 80 wall thickness provides a safety margin in high‑pressure systems, reducing the risk of rupture or leakage.
- Easy Installation: Pre‑threaded NPT ends eliminate the need for field threading, saving labor time and reducing the chance of thread damage.
- Weldability: 304L is easily welded via TIG, MIG, or stick welding without post‑weld heat treatment, simplifying fabrication of complex piping systems.
- Long Service Life: Durable material and robust construction reduce maintenance frequency and replacement costs over the product lifecycle.
Trust & Reliability from Hemaokang Steel
With an annual export value of US$50 million to US$100 million and a team of 51–100 skilled professionals, Hemaokang Steel (Shandong) Co., Ltd. is your reliable partner for stainless steel piping solutions. Our ISO9001 certified quality management system ensures that every pipe is produced under strict process control. We serve clients across North America, South America, Europe, Asia, Africa, and Oceania, demonstrating our global reach and commitment to customer satisfaction. By choosing our 304L Schedule 80 threaded pipe, you invest in a product that combines proven performance with competitive pricing. Contact us today for a quote or technical consultation to support your next chemical processing project.
Frequently Asked Questions (FAQ)
-
Q: What is the difference between 304 and 304L stainless steel?
A: 304L has a lower carbon content (≤0.03%) compared to 304 (≤0.08%). This reduces the risk of intergranular corrosion after welding, making 304L more suitable for chemical processing where welded joints are exposed to corrosive media. -
Q: Can this pipe be used for high-temperature steam lines?
A: Yes, 304L can withstand temperatures up to 800°F (427°C). However, for continuous service above 800°F, we recommend higher alloy grades. Always consult your process engineer for specific thermal conditions. -
Q: Are the threads full or partial?
A: Our NPT threads are machined full length as per ANSI B1.20.1 standard, ensuring a complete taper for reliable sealing. Both ends are threaded. -
Q: Do you provide custom lengths or cut‑to‑size service?
A: Yes, we offer custom lengths. Please specify your requirement when placing an order. Standard random lengths are 20 ft (6 m). -
Q: Is this pipe suitable for potable water applications?
A: 304L is generally safe for potable water, but local regulations may require additional certifications. For food‑grade or drinking water use, please confirm with your local authority. -
Q: What finish is on the pipe surface?
A: The pipe comes with a pickled and annealed finish, which is clean, bright, and free of scale. A protective film is optional upon request. -
Q: How do you ensure the quality of each pipe?
A: We follow ISO9001 quality procedures, including material traceability, dimensional inspection, hydrostatic testing, and thread gauging. Test certificates are available upon request. -
Q: What is the minimum order quantity (MOQ)?
A: MOQ is typically 100 meters for standard sizes. For smaller quantities, please contact our sales team for availability.
Send Inquiry to This Supplier
1Yr
Year Established
2025
Annual Export Value
US$50 Million - US$100 Million
Total Employees
51 - 100 People
Product Certifications
ISO9001
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