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ASTM A106 GR.B Seamless Carbon Steel Tube for Oil, Gas & Power Plants
| 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
Bill Selection: Primarily carbon steel or low-alloy steel round billets.
Chemical Composition Testing: Ensure billets meet ASTM A106 standards, including the content of C, Mn, P, S, and Si.
Surface Inspection: Remove billets with cracks, porosity, and impurities.
2. Heating & Piercing
Place the billets in a reheating furnace, typically at 1100℃ - 1250℃.
The heated billets are then fed into a piercing mill.
Hollow billets are manufactured using the Mannesmann piercing method.
A preliminary tube blank is formed, slightly larger in length and diameter than the final tube.
3. Rolling (Elongation)
**Hot Rolling Mill** continuously rolls hollow billets into seamless steel pipes with the required outer diameter and wall thickness.
Includes:
Longitudinal Rolling
Elongation (Stretching)
Sizing (Straightening)
Controlling pipe wall thickness and outer diameter tolerances.
4. Cooling
The rolled pipes are naturally cooled by water or air.
Optional Normalizing (Quenching & Tempering) is used to improve mechanical properties (such as tensile strength and yield strength).
5. Cutting to Length
Oxy-fuel cutting or sawing is used according to customer requirements.
Standard lengths are typically 5.8m – 12m.
6. Surface Treatment (Internal and External)
Descaling/Picking: Acid pickling removes oxide scale.
Oil Coating/Greasing: Ensures rust prevention during transportation and storage.
Internal anti-corrosion treatment can be performed upon request.
7. Testing/Inspection
Chemical Analysis
Tensile & Yield Strength, Elongation
Non-destructive Testing (NDT, Ultrasonic/Eddy Current)
Hydrostatic Test
Dimensional Check
8. Packaging & Delivery
Protective Caps: Plastic or steel caps are fitted to both ends of the steel pipes.
Bundling: Bundled and secured with steel straps.
Waterproofing: Wooden pallets or crates are used for packaging to ensure safe sea transport.
Local Spanish Support
Our Madrid office has a professional Spanish-speaking service team, creating a smooth and seamless import process for our Central and South American clients, delivering a high-quality customer experience.
Ample Inventory Guarantee
A large stock of steel pipes ensures rapid response to your order needs, providing solid support for on-time project progress.
Safe Packaging Protection
Each steel pipe is individually sealed with multiple layers of bubble wrap, and then further protected with an outer plastic bag. This double protection ensures that the product will not be deformed or damaged during transportation, safeguarding its integrity.
Fast and Efficient Delivery
We offer international delivery services tailored to your project schedule, relying on a robust logistics system to ensure timely and reliable delivery.
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
