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ASTM A106 Gr.B Seamless Carbon Steel Pipe/Tube for High-Pressure Oil, Gas & Power Generation Systems
| Item | Details |
| Grades | ASTM A106 Grade B |
| Specification Level | Seamless Carbon Steel Tube |
| Outer Diameter Range | 17 mm – 914 mm (3/8" – 36") |
| Thickness / Schedule | SCH10, SCH20, SCH30, STD, SCH40, SCH60, XS, SCH80, SCH100, SCH120, SCH140, SCH160, XXS |
| Manufacturing Types | Hot-rolled, Seamless, Extrusion, Mandrel Mill Process |
| Ends Type | Plain End (PE), Beveled End (BE), Threaded End (Optional) |
| Length Range | Single Random Length (SRL): 5–12 m, Double Random Length (DRL): 5–14 m, Cut-to-Length on request |
| Protection Caps | Plastic/Metal Caps for both ends |
| Surface Treatment | Anti-rust oil coated, black painted, or as per customer request |
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Oil & Gas Industry: Transmission pipelines, refinery lines, and petrochemical plants.
Power Generation: High-pressure steam pipelines, boilers, and heat exchangers.
Industrial Piping: Chemical plants, industrial process piping, and water treatment plants.
Construction & Infrastructure: High-pressure water or gas supply systems.
1. Raw Material Preparation
Billet Selection: Mainly carbon steel or low-alloy steel round billets are chosen.
Chemical Composition Testing: Verify that billets comply with ASTM A106 standards, including levels of C, Mn, P, S, and Si.
Surface Inspection: Discard billets with cracks, porosity, or surface impurities.
2. Heating & Piercing
Billets are placed into a reheating furnace at approximately 1100℃ - 1250℃.
The heated billets are then processed in a piercing mill.
Hollow billets are produced using the Mannesmann piercing process.
A preliminary tube blank is created, slightly exceeding the final tube in both length and diameter.
3. Rolling (Elongation)
Hot Rolling Mill continuously transforms hollow billets into seamless steel pipes with the desired outer diameter and wall thickness.
The rolling process includes:
Longitudinal Rolling
Elongation (Stretching)
Sizing (Straightening)
This ensures precise control over pipe wall thickness and outer diameter tolerances.
4. Cooling
The rolled pipes are cooled naturally using water or air.
Optional Normalizing or Quenching & Tempering can be applied to enhance mechanical properties, such as tensile strength and yield strength.
5. Cutting to Length
Pipes are cut to the required lengths using oxy-fuel cutting or sawing, depending on customer specifications.
Standard lengths generally range from 5.8m to 12m.
6. Surface Treatment (Internal & External)
Descaling/Pickling: Acid pickling removes oxide scale from the pipe surface.
Oil Coating/Greasing: Applied to prevent rust during storage and transportation.
Internal Anti-Corrosion Treatment: Available upon customer request.
7. Testing & Inspection
Chemical Analysis to verify material composition.
Mechanical Testing: Includes tensile strength, yield strength, and elongation.
Non-Destructive Testing (NDT): Methods such as ultrasonic or eddy current testing.
Hydrostatic Testing to ensure pipe integrity.
Dimensional Inspection to confirm compliance with specifications.
8. Packaging & Delivery
Protective End Caps: Plastic or steel caps are applied to both ends of the pipes.
Bundling: Pipes are bundled and securely strapped with steel bands.
Waterproof Packaging: Wooden pallets or crates are used to ensure safe shipping by sea.
Local Spanish Support
We have a professional Spanish-speaking team to ensure a smooth import process for our clients in Central and South America, and to provide a superior customer experience.
Ample Inventory Guarantee
A large inventory of steel pipes allows for rapid order response, providing strong support for on-time project completion.
Safe Packaging Protection
All pipes are professionally packaged for ocean shipping and placed in outer plastic bags to prevent deformation or damage during transportation. We can also provide additional packaging services if needed.
Fast and Reliable Delivery
International delivery services are tailored to project schedules and rely on a robust logistics network to ensure timely and reliable transportation.
Robust Packaging Meeting Standards
The steel pipes are packaged on IPPC fumigated wooden pallets, fully complying with Central American export regulations. Each package is equipped with a three-layer waterproof membrane to effectively protect against the local tropical and humid climate; plastic end caps ensure a tight seal against dust and foreign objects entering the pipe. Single-piece loading is controlled at 2-3 tons, precisely meeting the operational needs of small cranes commonly used on construction sites in the region.
Flexible Customizable Length Specifications
The standard length is 12 meters, perfectly suited for container shipping. For land transport restrictions in tropical countries such as Guatemala and Honduras, additional 10-meter and 8-meter lengths are available to solve transportation compatibility issues.
Complete Documentation and Efficient Service
We provide a one-stop service for all necessary import documents, including the Spanish Certificate of Origin (Form B), MTC Material Certificate, SGS report, packing list, and commercial invoice. If any documents are incorrect, they will be corrected and resent within 24 hours to ensure smooth customs clearance in Ajana.
Reliable Transportation and Logistics Guarantee
After production is completed, goods will be handed over to a neutral freight forwarder and delivered via a combined land and sea transport model. Transit times at key ports are as follows:
China → Panama (Cologne): 30 days
China → Mexico (Manzanillo): 28 days
China → Costa Rica (Limon): 35 days
We also provide short-distance delivery services from ports to oil fields and construction sites, efficiently completing the last-mile transportation connection.
1. Are your ASTM A106 GR.B Seamless Carbon Steel Tubes compliant with the latest standards for the Americas market?
Absolutely, our ASTM A106 GR.B seamless carbon steel tubes are fully compliant with the latest ASTM A106 specification, which is widely accepted across the Americas—including the United States, Canada, and Latin America—for high-temperature and high-pressure applications in oil, gas, power generation, and industrial pipelines. They also meet dimensional standards such as ASME B36.10M, and can be supplied in accordance with local regulations, including NOM standards in Mexico and Panama Free Trade Zone requirements. All certifications—ISO 9001, EN 10204 3.1/3.2 MTC, Hydrostatic Test Report, NDT Report—are verifiable and fully traceable.
2. How to Select the Proper Grade of ASTM A106 Seamless Steel Tube for My Project?
Select the proper grade based on your operating temperature, pressure, and service conditions:
For general high-temperature or moderate-pressure pipelines (≤ 35 MPa, up to 400°C), ASTM A106 GR.B provides excellent balance of strength, ductility, and cost-effectiveness.
For higher-temperature or higher-pressure service, consider ASTM A106 GR.C or GR.D, which offer higher yield strength and enhanced high-temperature performance.
Our engineering team can provide a free technical selection guide based on your project’s design pressure, medium (steam, oil, gas), temperature, and welding requirements.
Contact Details
Address
Kangsheng development industry zone,
Wuqing district, Tianjin city, China.
Phone
Hours
Monday-Sunday: 24-hour Service
