ALLLAND Steel Pipe Supply
Welcome to ALLLAND Steel Pipe Manufacturing. ASTM A106 Grade B is one of the most widely used seamless carbon steel pipes for high-temperature applications. This material offers excellent high-temperature strength, good weldability, and stable mechanical properties, making it a common piping solution for medium- to high-temperature operating conditions. ALLLAND Steel Pipe is committed to providing global customers with high-quality seamless steel pipe products that comply with the ASTM A106 standard. We also offer customization for a wide range of sizes and specifications to meet the needs of various engineering projects. For detailed specifications or a quote, please feel free to contact us at any time.
Alllandsteel is a steel pipe manufacturer based in China with 25 years of experience.
The facility spans 22,000 square meters, represents a RMB 700 million investment, and operates four production lines (JCOE, ERW, SMLS, SSAW) alongside five coating lines.
With an annual production capacity of 250,000 tons, the factory covers specifications ranging from Ø406 to Ø1524 and holds multiple international certifications (API/ASTM/EN/ISO/JIS). Focused on steel pipes, creating value for you!
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ASTM A106 Grade B is a standard for seamless carbon steel pipes designed for high-temperature applications. Grade B is the most commonly used grade within the ASTM A106 series and is widely used in the energy, oil and gas, and industrial piping sectors.
O.D.:
10.13mm – 1219mm
NPS 1/4″ – 30″
Length:
16–40 ft (typically)
5.8–12 m
W.T.:
SCH 10 – SCH XXS
Manufacturing Process:
Seamless only
Standards:
ASTM A106 / ASME B36.10M
Forming Method:
Hot Finished/Cold Drawn
Coating:
Black/Varnish/Oiled/3PE/FBE
Galvanized/Epoxy Coating
Heat Treatment:
As-rolled/Normalized/Normalized & Tempered
Outside Diameter Tolerance
NPS 2″ and below: ±0.4 mm
NPS 2″ and above: ±1%
Wall Thickness Tolerance: Negative deviation: −12.5%
Length Tolerance: ±5 mm / ±10 mm
| NPS | OD (mm) | SCH 40 WT (mm) | SCH 80 WT (mm) |
| 1/2″ | 21.3 | 2.77 | 3.73 |
| 3/4″ | 26.7 | 2.87 | 3.91 |
| 1″ | 33.4 | 3.38 | 4.55 |
| 1-1/4″ | 42.2 | 3.56 | 4.85 |
| 1-1/2″ | 48.3 | 3.68 | 5.08 |
| 2″ | 60.3 | 3.91 | 5.54 |
| 2-1/2″ | 73.0 | 5.16 | 7.01 |
| 3″ | 88.9 | 5.49 | 7.62 |
| 4″ | 114.3 | 6.02 | 8.56 |
| 5″ | 141.3 | 6.55 | 9.53 |
| 6″ | 168.3 | 7.11 | 10.97 |
| 8″ | 219.1 | 8.18 | 12.70 |
| 10″ | 273.1 | 9.27 | 15.09 |
| 12″ | 323.9 | 10.31 | 17.48 |
The outer diameter of ASTM A106 Grade B does not change with SCH, but the wall thickness (WT) does vary with SCH. Feel free to contact us for further specifications.
| Element | Max % |
| C (Carbon) | 0.30 |
| Mn (Manganese) | 0.29 – 1.06 |
| P (Phosphorus) | ≤ 0.035 |
| S (Sulfur) | ≤ 0.035 |
| Si (Silicon) | ≥ 0.10 |
ASTM A106 Grade B is a medium-carbon steel with a relatively high manganese content, which significantly enhances its strength while also providing good toughness.
| Property | Value |
| Tensile Strength | ≥ 415 MPa |
| Yield Strength | ≥ 240 MPa |
ASTM A106 Grade B offers a balance of strength and weldability, providing excellent value for money. A106 Gr. B is essentially a seamless carbon steel pipe designed for high-temperature, high-pressure applications, and is suitable for steam pipelines, high-pressure pipelines, and oil and gas transmission systems.
ASTM A106 Grade B is a seamless carbon steel pipe designed for high-temperature, high-pressure applications. It offers excellent high-temperature performance, consistent pressure-bearing capacity, and superior weldability, making it a well-established solution for industrial applications.
Oil & Gas Industry: The Primary Applications of ASTM A106 Grade B
1.Oil Transmission Pipeline
2.Natural Gas Pipeline
3.Refinery Piping System
Power Generation
1. Steam Pipeline
2. Boiler Piping
3. Heat Exchanger System
Petrochemical Industry
In petrochemical plants, A106 Gr. B is typically used for process piping.
Common media:
· Steam
· Oil
· Gas
· High-temperature fluids
MEP & HVAC
1. HVAC Piping
2. Chilled Water System
| Chemical Composition | |||
| Element | Grade A | Grade B | Grade C |
| Max % | |||
| C | 0.25 | 0.30 | 0.35 |
| Mn | 0.27-0.93 | 0.29-1.06 | 0.29-1.06 |
| P | 0.035 | 0.035 | 0.035 |
| S | 0.035 | 0.035 | 0.035 |
| Si | 0.10 | 0.10 | 0.10 |
| Cr | 0.40 | 0.40 | 0.40 |
| Cu | 0.40 | 0.40 | 0.40 |
| Mo | 0.15 | 0.15 | 0.15 |
| Ni | 0.40 | 0.40 | 0.40 |
| V | 0.08 | 0.08 | 0.08 |
| Mechanical Properties | |||
| Property | Grade A | Grade B | Grade C |
| Tensile Strength | ≥330 MPa | ≥415 MPa | ≥485 MPa |
| Yield Strength | ≥205 MPa | ≥240 MPa | ≥275 MPa |
Grade A is suitable for medium and low temperatures and general pressure ratings, while Grade B is the most versatile high-temperature grade. It is suitable for medium and high temperatures, high-pressure steam, and process piping, and is a very typical pipe material for high-temperature applications.
The vast majority of ASTM A106 projects use Grade B; the actual volume of Grade C is relatively small.
ASTM A106 Grade B is a seamless pipe with no weld-related weaknesses, making it a safer choice. Due to its excellent high-temperature performance and weldability, it is widely used in international engineering projects and is suitable for industrial high-temperature, high-pressure piping systems.
