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Home > Metallurgy, Mineral & Energy > Steel & Products > Steel Pipe & Tube > Carbon Steel Pipe Free Sample Available, Technical Support, ASTM A53 Grade B ERW, 4" Schedule 40, 20ft Length

Carbon Steel Pipe Free Sample Available, Technical Support, ASTM A53 Grade B ERW, 4" Schedule 40, 20ft Length

Product Spotlights

High-quality ASTM A53 Grade B carbon steel ERW pipe, 4" Schedule 40, 20ft length. Free samples available, ISO9001 certified, with comprehensive technical support. Cost-effective, durable, and customizable for oil & gas, construction, and water projects. Fast delivery from a reliable exporter with US$50M+ annual export value.

Negotiable MOQ: 1 Ton (Price negotiable depending on order volume and customization)

Key Specifications

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Material:

Carbon Steel

Type:

Other, ERW (Electric Resistance Welded)

standard:

ASTM A53 Grade B

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Hemaokang Steel (Shandong) Co., Ltd.

1Yr

Payment & Shipping

Payment Methods:

Port of Shipment:

Qingdao Port

Delivery Detail:

7 days

Product Details
Company Profile
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Material Carbon Steel

Type Other, ERW (Electric Resistance Welded)

standard ASTM A53 Grade B

size 4 inch (114.3 mm)

schedule Schedule 40 (6.02 mm wall thickness)

length 20 feet (6.096 meters)

surface Black plain finish (customizable)

application Oil & Gas, Construction, Water Transmission, Structural

Hemaokang Steel (Shandong) Co., Ltd., established in 2025 with an annual export value of US$50-100 million, is proud to offer premium Carbon Steel Pipe ASTM A53 Grade B ERW, 4" Schedule 40, 20ft Length. As a reliable manufacturer with ISO9001 certification and a team of 51-100 experienced professionals, we ensure every pipe meets rigorous quality standards. Our product is designed for demanding applications in oil & gas, construction, and infrastructure projects, providing exceptional strength, durability, and cost-effectiveness. We also provide free samples and comprehensive technical support to help you make an informed decision.

Key Features & Technical Specifications

Material & Grade: High-quality carbon steel conforming to ASTM A53 Grade B, ensuring excellent tensile strength and weldability.
Manufacturing Process: Electric Resistance Welded (ERW) technology guarantees uniform wall thickness, smooth surface, and dimensional accuracy.
Size & Schedule: 4-inch nominal diameter with Schedule 40 wall thickness (6.02 mm), ideal for standard pressure applications.
Length: 20 feet (6.096 meters) – standard length for easy handling and reduced welding joints.
Testing & Certification: Each pipe undergoes hydrostatic testing, eddy current inspection, and tensile testing. ISO9001 certified manufacturing process.
Surface Finish: Black plain finish (oiled or coated options available upon request).
End Finish: Plain ends, beveled ends, or threaded ends as per customer requirements.

Parameter	Value
Outer Diameter	4.5 inches (114.3 mm)
Wall Thickness	0.237 inches (6.02 mm)
Weight per Foot	10.79 lbs/ft (16.06 kg/m)
Tensile Strength (min)	60,000 psi (415 MPa)
Yield Strength (min)	35,000 psi (240 MPa)
Hydrostatic Test Pressure	2,500 psi (17.2 MPa)

Product Advantages & Customer Benefits

Reliable Performance: ASTM A53 Grade B ensures consistent quality for conveying fluids, gas, and structural applications.
Cost-Effective: ERW pipes offer excellent strength-to-weight ratio, reducing material and transportation costs.
Easy Installation: Standard 20-foot length and precise dimensions facilitate quick welding and fitting, saving labor time.
Free Sample Program: Request a free sample to evaluate quality before bulk orders – no upfront cost.
Technical Support: Our engineering team provides on-site assistance, welding recommendations, and material selection guidance.
Customization Options: Available in different lengths, coatings (galvanized, FBE, 3PE), and end finishes to meet specific project needs.

Trust & Reliability

Hemaokang Steel has exported to over 15 regions including North America, South America, Europe, and Southeast Asia, with annual export value exceeding US$50 million. Our ISO9001 quality management system ensures every batch is traceable and tested. We maintain a large inventory to guarantee fast delivery, and our after-sales service includes 24/7 consultation and defect replacement policy. With a dedicated team of 51-100 employees, we are committed to providing hassle-free procurement experience. Contact us today to request a free sample or discuss your technical requirements – we are ready to support your project from start to finish.

Frequently Asked Questions (FAQ)

What is the difference between ASTM A53 Grade A and Grade B?
Grade B offers higher tensile and yield strength (60,000 psi / 35,000 psi) compared to Grade A, making it suitable for more demanding applications. Our pipe is Grade B, which is the most common specification for structural and pressure applications.
Can I get a free sample before placing an order?
Yes, we provide free samples (shipping cost may apply) for your evaluation. Simply contact our sales team with your delivery address and quantity needed.
What testing certifications do you provide?
Each pipe is accompanied by a mill test certificate (MTC) with chemical and mechanical properties, hydrostatic test results, and dimensional inspection. Our ISO9001 certification ensures consistent quality control.
Is this pipe suitable for underground water supply lines?
Yes, the 4" Schedule 40 carbon steel pipe is commonly used for water transmission. For corrosive environments, we recommend external coating options such as FBE or galvanizing, which we can supply upon request.
What is the minimum order quantity (MOQ)?
Our MOQ is typically 20 tons for standard sizes. However, for trial orders or sample requests, we can accommodate smaller quantities. Please discuss with our sales representative.
How long does shipping take to North America?
Shipping time to major ports in North America is approximately 25-35 days by sea. We have efficient logistics partners to ensure timely delivery. Express sample delivery via DHL/FedEx takes 5-7 days.
Can you provide custom lengths or special end finishes?
Yes, we can cut pipes to custom lengths (e.g., 10ft, 40ft) and provide beveled, threaded, or grooved ends. Additional charges may apply; please inquire for availability.
What payment terms do you accept?
We accept T/T (30% deposit, 70% before shipment), L/C at sight, and other negotiable terms. For long-term contracts, open account terms may be discussed.