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Help CenterASTM A53 Grade B Galvanized Steel Pipe Schedule 40 2 Inch NPT Threaded Ends
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As a leading supplier from Hemaokang Steel (Shandong) Co., Ltd., we are proud to offer premium ASTM A53 Grade B Galvanized Steel Pipe Schedule 40 2 Inch NPT Threaded Ends. Our factory, established in 2025, has rapidly grown to serve global markets with an annual export value of US$50 million to US$100 million. With ISO9001 certification and a dedicated team of 51–100 professionals, we ensure every pipe meets rigorous quality standards. This galvanized pipe combines the strength of Grade B carbon steel with a durable hot-dip zinc coating, providing excellent corrosion resistance for demanding applications. Whether for plumbing, structural supports, or fire protection systems, our product delivers reliability and long service life.
The 2-inch Schedule 40 galvanized pipe features NPT threaded ends, making it easy to connect with standard fittings without additional welding. The threading is precision-cut to ensure leak-proof joints and compatibility with international pipe systems. Below, we detail the key specifications and advantages of this product.
Product Specifications
| Parameter | Value |
|---|---|
| Standard | ASTM A53 Grade B |
| Nominal Size | 2 Inches (DN50) |
| Wall Thickness | Schedule 40 (3.91 mm / 0.154 in) |
| Outside Diameter | 2.375 in (60.3 mm) |
| End Connection | NPT Threaded (National Pipe Taper) |
| Coating | Hot-Dip Galvanized (Zinc Coating) |
| Length | 21 ft (6.4 m) standard, custom lengths available |
| Weight per Foot | ~5.79 lb/ft (8.62 kg/m) |
| Pressure Rating | Up to 2600 psi (depending on temperature) |
Key Features & Benefits
- ASTM A53 Grade B Compliance: Meets stringent mechanical and chemical requirements for carbon steel pipe, ensuring high tensile strength and weldability.
- Schedule 40 Wall Thickness: Provides a balanced strength-to-weight ratio suitable for medium-pressure applications, widely used in plumbing and structural projects.
- NPT Threaded Ends: Pre-threaded to NPT standard, allowing quick and secure connections without welding. Threads are tapered for a tight seal with pipe dope or Teflon tape.
- Hot-Dip Galvanized Coating: The entire pipe is immersed in molten zinc, creating a uniform, protective layer that resists rust, corrosion, and harsh environmental conditions. Ideal for outdoor or underground installations.
- Versatile Applications: Suitable for water supply lines, gas distribution, fire sprinkler systems, scaffolding, handrails, and structural frames.
- Dimensional Accuracy: Each pipe is manufactured with precise tolerances, ensuring compatibility with standard fittings and valves.
- Customizable Lengths: Available in standard 21 ft lengths, or we can cut to your required dimensions to reduce waste and installation time.
Why Choose Hemaokang Steel?
Located in Liaocheng, Shandong, China, Hemaokang Steel benefits from a robust industrial supply chain and decades of steel processing expertise. Our annual export value of US$50 million to US$100 million reflects the trust of clients across North America, South America, Europe, Africa, Oceania, and Asia. We are ISO9001 certified, ensuring consistent quality management from raw material procurement to final inspection. Our team of 51–100 experienced employees uses advanced testing equipment to verify dimensions, coating thickness, and thread integrity on every batch.
We offer competitive pricing, flexible packaging options (hexagonal bundling, slings, or wooden crates), and reliable shipping via sea, rail, or air. Whether you need a large project order or a sample for testing, we are ready to support your requirements. Our sales engineers can help you select the right pipe specification for your application, and we provide technical documentation including mill test certificates upon request.
By choosing ASTM A53 Grade B Galvanized Steel Pipe Schedule 40 2 Inch NPT Threaded Ends from Hemaokang Steel, you are investing in a product that combines global standards, durability, and cost-effectiveness. Contact us today to discuss your needs or request a quotation. We look forward to building a long-term partnership with you.
Frequently Asked Questions (FAQ)
-
What is the difference between Schedule 40 and Schedule 80 pipe?
Schedule 40 has a thinner wall (3.91 mm for 2 inch) compared to Schedule 80 (5.54 mm). Schedule 40 is lighter and suitable for medium-pressure applications, while Schedule 80 is used for higher pressure systems. -
Are the NPT threads compatible with international fittings?
Yes, NPT (National Pipe Taper) threads are widely used in North America and many other regions. They are compatible with standard NPT fittings and valves. We recommend using thread sealant to ensure leak-free joints. -
Can this pipe be used for underground water lines?
Yes, the hot-dip galvanized coating provides excellent corrosion resistance for underground applications. However, for extremely corrosive soil conditions, additional wrapping or coating may be recommended. -
What is the maximum working pressure for this pipe?
For Schedule 40 2-inch galvanized pipe, the maximum allowable working pressure at room temperature is approximately 2600 psi (based on Barlow's formula). Actual pressure rating depends on temperature and service conditions. -
Do you provide mill test certificates (MTC)?
Yes, we can provide MTC with every shipment, including chemical composition and mechanical properties per ASTM A53 Grade B requirements. -
What lengths are available?
Standard length is 21 ft (6.4 m). Custom lengths from 1 ft to 40 ft are available upon request. Please specify your preferred length when ordering. -
How is the pipe threaded? Are both ends threaded?
Both ends are threaded with NPT threads. The threads are cut to precise tolerances using CNC threaders, and each end is protected with plastic caps or thread protectors to prevent damage during transit. -
What is the lead time for bulk orders?
For standard sizes, lead time is typically 15–30 days after order confirmation, depending on quantity. For urgent orders, we can expedite production. Please contact our sales team for specific timelines.
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