ASTM A106 Grade B Seamless Pressure Pipe Manufacturer
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ASTM A106 Grade B Seamless Pressure Pipe Overview
Benefits of ASTM A106 Grade B Seamless Pressure Pipe
- Provides long service life, even in demanding conditions.
- Made from carbon steel with great toughness.
- Ideal for steam, gas, and fluid transmission.
- Designed to withstand high pressure without deformation.
- Common in boilers, heat exchangers, and refinery piping.
ASTM A106 pipes exist in three grades: A, B, and C. The primary distinction between Grades A and B is strength. Grade B has more carbon, making it stronger than Grade A. Grade B is primarily used in high-pressure and high-temperature systems. Grade B has a greater carbon limit up to 0.30% than Grade A with 0.25%. Grade B has a higher manganese content which gives the pipe more strength and longevity. In terms of mechanical qualities Grade B has a minimum tensile strength of 60,200 psi, whereas Grade A has around 48,000 psi. Grade B has a higher yield strength making it better suited to heavy-duty industrial applications. Grade A is usually chosen for lower-pressure jobs or where flexibility matters more than strength. Grade B is used in oil and gas, refineries, steam lines and power plants.
For more strength and resistance, ASTM A106 Grade B is the better choice. For lighter work, Grade A is suitable.
ASTM A106 Grade B Seamless Pressure Pipe is well known carbon steel pipe grades for its strength and high-temperature use. Compared to ASTM A53 Grade B ERW Pipe, A106 has higher carbon and manganese content, giving it better pressure and heat resistance. ASTM A333 Grade 6 Pipe is used for low-temperature service, while A106 pipe is ideal for high-heat systems. Grades like ASTM A671 GR CC60 cl22 and ASTM A672 GR B60 class 12 are for specific welded pipe applications. A106 Grade B is preferred for steam, oil, and gas lines under pressure.
ASTM A106 Grade B Pipe Specification
Seamless Pipe OD : 1/4″ NB – 36″ NB
Welded Pipe OD : 1/8″ NB – 24″ NB
EFW Pipe Size : 12″ NB – 60″ NB
ASTM A53, A106, A333, A671 /
ASME SA-53, SA-106, SA-333, SA-671
Seamless, ERW, Welded, Fabricated
Round, Square, Rectangular, Hydraulic Etc
Single Random, Double Random & Cut Length.
Plain End, Beveled End, Treaded
SCH5, SCH10, SCH20, SCH30, SCH40, STD, SCH80, SCH 80S, SCH60, SCH80, SCH120, SCH140, SCH160, SCH XXS, SCH XS
Black / Mill Finish, Painted / Coated, Galvanized / Zinc Coated, Polished / Bright
Types of ASTM A106 Grade B Pipe
Manufacturing Types
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Hot Finished Seamless (HFS)Provide a smooth finish and excellent strength without the need for additional heat treatment.
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Cold Drawn Seamless (CDS)Drawn at room temperature for better surface finish and tighter tolerances.
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ERW PipeWelded from steel strips which is good for standard pressure applications.
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EFW PipeElectric Fusion Welded (EFW) pipes are welded by fusion welding, usually applied in larger diameters and high-demand processes.
Pipe Forms
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Round PipeMost common shape for flow of fluids and gases.
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Square PipeUsed in structures needing equal strength on all sides.
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Rectangular PipeFit well in tight spaces or framework applications.
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Bush Hex PipesHex shape offers grip and tightness in special uses.
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Hollow PipesLightweight, yet strong is used for structural and mechanical systems.
Contact us today to discuss how ASTM A106 Grade B Pipe can benefit your application. Whether you need guidance in selecting the right pipes or have specific requirements, our team of experts is here to help you find the optimal solution.
Technical Details & Delivery Condition
The chemical composition of ASTM A106 Grade B Seamless Pipe includes carbon, manganese and other elements that give the material strength, toughness, and good weldability.
| Grade A | Grade B | Grade C | |
| Carbon max. % | 0.25 | 0.30 | 0.35 |
| Manganese % | 0.27 to 0.93 | 0.29 to 1.06 | 0.29 to 1.06 |
| Phosphorus, max. % | 0.025 | 0.025 | 0.025 |
| Sulfur, max. % | 0.025 | 0.025 | 0.025 |
| Silicon, min. % | 0.10 | 0.10 | 0.10 |
ASTM A106 Grade B Schedule 40 carbon steel pipes’ mechanical properties like yield strength, tensile strength, and elongation is given below.
| ASTM A106 Grade A | ASTM A106 Grade B | ASTM A106 GR C | |
| Tensile strength, min, psi (MPa) | 48000 (330) | 60000 (415) | 70000 (485) |
| Yield strength, min, psi (MPa) | 30000 (205) | 35000 (240) | 40000 (275) |
| Standard / Source | Equivalent Grade(s) | Notes |
|---|---|---|
| ASTM A106 | Grade A / Grade B / Grade C | Seamless carbon steel pipe for high-temperature service (reference standard). |
| EN / DIN (European) | P235GH (≈ A106 Gr A), P265GH (≈ A106 Gr B), P295GH (≈ A106 Gr C) | EN 10216 family / DIN documents list P235GH / P265GH / P295GH as comparable pressure/temperature grades. (approximate equivalence). |
| API / ASTM (Petroleum / US) | API 5L Grade B, ASTM A53 Grade B | ASTM A106 Gr B often compared to API 5L Gr B and A53 Gr B for general service; check mechanical/heat-treatment specifics. |
| DIN 17175 | St35.8 / 19Mn5 (various heat-resistant carbon steels) | DIN 17175 seamless heat-resistant steel grades are commonly listed as equivalents to A106 (esp. for Gr B). |
| BS (British) | BS 3601 / BS EN variants (comparable carbon pipe grades) | British standards have historic equivalents; verify exact part/grade when substituting. |
| JIS (Japan) | JIS G3454 / G3461 similar grade listings (STPG etc.) | Japanese standards include comparable seamless carbon pipe grades — check JIS part numbers for exact match. |
| IS (India) | IS 1239 / IS 3589 (comparable carbon pipe ranges) | Indian standards for carbon steel pipes are used in many local supplies; they sometimes serve as practical equivalents for A106 in non-critical uses — verify mechanicals. |
| General remark | Equivalence is approximate — always verify: chemical composition, tensile/yield strength, allowable temperature, heat treatment, and NDT/inspection requirements before substitution. Refer to the original standard documents (ASTM A106, EN 10216, DIN 17175, API 5L) for technical acceptance. | |
ASTM A106 Grade B Schedule 40 pipes come in various pipe surface finishes to suit different environments and coating needs. Various finish options are given below.
| Pipe Type | Schedule | Material Grade | Surface Finish | Notes |
| Carbon Steel Pipe | 40 | ASTM A106 Grade B | Mill Finish / Pickled & Oiled | Standard for welded or seamless pipes |
| Carbon Steel Pipe | 40 | ASTM A106 Grade B | Polished / Bright | Optional for special applications or cosmetic appearance |
| Carbon Steel Pipe | 40 | ASTM A106 Grade B | Black / Painted | For corrosion protection before further processing |
Prices for CS A106 Gr.B Bush Hex Pipes vary across the Indian market due to size, schedule, and finish type. The table help to estimate the A106 carbon steel price based on current trends and demand.
| Size | OD | WT | FOB India | |
| 1″ | SCH 40 | 33.4 | 3.38 | $585.57 |
| 2″ | SCH 40 | 60.3 | 3.91 | $545.77 |
| 2-1/2″ | SCH 40 | 73 | 5.16 | $545.77 |
| 3″ | SCH 40 | 88.9 | 5.49 | $545.77 |
| 4″ | SCH 40 | 114.3 | 6.02 | $545.77 |
| 6″ | SCH 40 | 168.3 | 7.11 | $545.77 |
| 8″ | SCH 40 | 219.1 | 8.18 | $539.14 |
| 10″ | SCH 40 | 273 | 9.27 | $539.14 |
Carbon Steel Pipes Grades We Offer
CS A106 Grade B Hollow Pipe Dimension Table
This chart lists the ASTM A106 Gr B Pipe dimensions for hollow pipes, including OD, wall thickness, NPS, and lengths. It help engineers to select the right pipe based on system needs and load capacity.
| NPS [inches] | OD [MM] | OD [inches] | WT [MM] | WT [inches] | Weight [kg/m] | Weight [lb/ft] |
| 1/4 | 13.7 | 0.540 | 2.24 | 0.088 | 0.84 | 0.42 |
| 1/2 | 21.3 | 0.840 | 2.77 | 0.109 | 1.27 | 0.85 |
| 1 1/4 | 42.2 | 1.660 | 3.56 | 0.140 | 3.39 | 2.27 |
| 1 1/2 | 48.3 | 1.900 | 3.68 | 0.145 | 4.05 | 2.72 |
| 2 | 60.3 | 2.375 | 3.91 | 0.154 | 5.44 | 3.65 |
| 3/4 | 26.7 | 1.050 | 2.87 | 0.113 | 1.69 | 1.13 |
| 1 | 33.4 | 1.315 | 3.38 | 0.133 | 2.50 | 1.68 |
| 8 | 219.1 | 8.625 | 8.18 | 0.322 | 42.55 | 28.55 |
| 10 | 273.0 | 10.750 | 9.27 | 0.365 | 60.31 | 40.48 |
| 12 | 323.8 | 12.750 | 10.31 | 0.406 | 79.73 | 53.52 |
| 6 | 168.3 | 6.625 | 7.11 | 0.280 | 28.26 | 18.97 |
| 1/8 | 10.3 | 0.405 | 1.73 | 0.068 | 0.37 | 0.24 |
| 20 | 508.0 | 20 | 15.09 | 0.594 | 183.42 | 123.11 |
| 24 | 610.0 | 24 | 17.48 | 0.688 | 255.41 | 171.29 |
| 14 | 355.6 | 14 | 11.13 | 0.375 | 94.55 | 54.57 |
| 16 | 406.4 | 16 | 12.70 | 0.500 | 123.30 | 82.77 |
| 18 | 457.0 | 18 | 14.27 | 0.562 | 155.80 | 104.67 |
| 2 1/2 | 73.0 | 2.875 | 5.16 | 0.203 | 8.63 | 5.79 |
| 3 | 88.9 | 3.500 | 5.49 | 0.216 | 11.29 | 7.58 |
| 3 1/2 | 101.6 | 4.000 | 5.74 | 0.226 | 13.57 | 9.11 |
| 4 | 114.3 | 4.500 | 6.02 | 0.237 | 16.07 | 10.79 |
| 5 | 141.3 | 5.563 | 6.55 | 0.258 | 21.77 | 14.62 |
| 32 | 813.0 | 32 | 17.48 | 0.688 | 342.91 | 230.08 |
ASTM A106 Gr B Pipe Weight Chart Diameter
Below is the weight chart of ASTM A106 Gr B pipes to help plan the project better. It gives a clear idea of total load, support requirements, and transport costs. Pipe weight depends on size, wall thickness, and length to make accurate calculations.
| Nominal Dia (inch) | Nominal Dia (mm) | O.D. (inch) | O.D. (mm) | SCH 30/40 Wall Thickness (inch) | SCH 30/40 Wall Thickness (mm) | SCH 30/40 STANDARD WEIGHT (kg/mtrs) | SCH 30/40 STANDARD WEIGHT (lbs/ft) | SCH 10 Wall Thickness (inch) | SCH 10 Wall Thickness (mm) | SCH 10 STANDARD WEIGHT (kg/mtrs) | SCH 10 STANDARD WEIGHT (lbs/ft) |
| 1/2” | 15 | 0.840 | 21.30 | 0.109 | 2.77 | 1.27 | 0.85 | – | – | – | – |
| 3/4” | 20 | 1.050 | 26.70 | 0.113 | 2.87 | 1.69 | 1.13 | 0.083 | 2.11 | 1.28 | 0.96 |
| 1” | 25 | 1.315 | 33.40 | 0.133 | 3.38 | 2.50 | 1.68 | 0.109 | 2.77 | 2.09 | 1.41 |
| 1.1/4” | 32 | 1.660 | 42.20 | 0.140 | 3.56 | 3.39 | 2.27 | 0.109 | 2.77 | 2.69 | 1.81 |
| 1.1/2” | 40 | 1.900 | 48.30 | 0.145 | 3.68 | 4.05 | 2.72 | 0.109 | 2.77 | 3.11 | 2.09 |
| 2” | 50 | 2.375 | 60.30 | 0.154 | 3.91 | 5.45 | 3.66 | 0.109 | 2.77 | 3.93 | 2.64 |
| 2.1/2” | 65 | 2.875 | 73.00 | 0.203 | 5.16 | 8.64 | 5.80 | 0.120 | 3.05 | 5.26 | 3.53 |
| 3” | 80 | 3.500 | 88.90 | 0.216 | 5.49 | 11.29 | 7.58 | 0.120 | 3.05 | 6.46 | 4.34 |
| 3.1/2” | 90 | 4.000 | 101.60 | 0.226 | 5.74 | 13.58 | 9.12 | 0.120 | 3.05 | 7.41 | 4.98 |
| 4” | 100 | 4.500 | 114.30 | 0.237 | 6.02 | 16.09 | 10.80 | 0.120 | 3.05 | 8.37 | 5.62 |
| 5” | 125 | 5.563 | 141.30 | 0.258 | 6.55 | 21.79 | 14.63 | 0.134 | 3.40 | 11.58 | 7.78 |
| 6” | 150 | 6.625 | 168.30 | 0.280 | 7.11 | 28.29 | 18.99 | 0.134 | 3.40 | 13.85 | 9.30 |
| 8” | 200 | 8.625 | 219.10 | 0.277 | 7.04 | 36.82 | 24.72 | 0.188 | 4.78 | 25.26 | 16.96 |
| 10” | 250 | 10.750 | 273.10 | 0.307 | 7.08 | 51.05 | 34.27 | 0.188 | 4.78 | 31.62 | 21.23 |
Carbon Steel ASTM A106 Gr B Pipe Manufacturing Process
The manufacturing process of ASTM A106 Gr B seamless pipes starts with selecting top-quality carbon steel billets. These solid blocks are the base material for every A106B seamless pressure pipe. The billet is heated and pierced to form a hollow tube. It then go through hot rolling or cold drawing depending on the required finish and size. Hot rolling shape the pipe at high temperatures, while cold drawing is done at room temperature for better surface finish and tighter tolerances.
Following shaping, the pipe is descaling to remove any oxide or surface rust. This keep the surface clean and prepared for subsequent processing. The pipe is then normalized or annealed through heat treatment. This procedure reduce internal tension and increase pipe strength and flexibility.
After heat treatment, each pipe is hydro checked for leaks or weak points. Some pipes goes through non-destructive testing (NDT) such as ultrasonic or X-ray inspection to guarantee material quality.
Finally, the pipe is finished—it is trimmed to length, the ends are prepped, and the surface is coated as needed.
Round Bar
Analytic
Cut to Length
Centering
Heating
Perforation
Inspection of Size
Pickling
Inspection of Surface
Lubricating
Cold Drawing (Cold Rolling)
Degreasing
Annealing
Straightening
Cut
Pickling / Passivating
Inspection
Analytic
Marking
Packing & Shipping
Application of ASTM A106 Grade B Pipes
ASTM A106 Grade B seamless pressure pipes are packed with export-grade material to prevent damage during transit. We employ HDPE wrapping, wooden boxes, shrink wrap, bundles with end caps, or bespoke packing based on the client’s requirements. Each pipe is neatly labeled with the size, grade, heat number, and standards. We provide speedy domestic delivery across India by road or rai and international shipping by water or air. We handle huge shipments, urgent delivery and custom order request with care. Stock item ship the same day and custom orders have fixed lead times. Export documents include invoices, packing list, test certificate, and country-specific paperwork. We also pack to satisfy GCC or European standards as needed.
Customization Options & Stock Availability
Why Choose Midland Alloys Inc. for A106 Seamless Black Round Pipes
Frequently Asked Questions About ASTM A106 Grade B Seamless Pressure Pipe
A106 Grade B has high strength, heat resistance, and handle pressure well which make it ideal for steam, oil, and gas lines.
Grade B has more carbon and higher strength than Grade A, but less than Grade C. It has balance strength and workability.
Seamless pipes have no welds, reducing weak points. They handle high pressure and temperature better than welded pipes.
