A106 Grade B Steel Pipe

ASTM A106 is suitable for seamless carbon steel pipe for high temperature environment. ASTM A106 pipe is manufactured according to grade A, B and C. A106-A is equivalent to the domestic 10# steel material, A106-B is equivalent to the domestic 20# material, is a relatively common use of a steel pipe material at home and abroad. A106 seamless steel pipe is mainly used in construction,
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Product Introduction

A106 Grade B Steel Pipe Description

ASTM A106 is suitable for seamless carbon steel pipe for high temperature environment. ASTM A106 pipe is manufactured according to grade A, B and C. A106-A is equivalent to the domestic 10# steel material, A106-B is equivalent to the domestic 20# material, is a relatively common use of a steel pipe material at home and abroad. A106 seamless steel pipe is mainly used in construction, mechanical processing, electrical, petrochemical and other industries.

Classification and Grades

ASTM A106 defines three grades:

  • Grade A: Minimum yield 30 000 psi; tensile 48 000–60 000 psi.

  • Grade B: Minimum yield 35 000 psi; tensile 60 000–75 000 psi.

  • Grade C: Higher carbon for improved strength; minimum yield 40 000 psi; tensile up to 85 000 psi.

We choose Grade B most often, due to its balanced strength and ductility. However, for extreme conditions, Grade C is sometimes specified—even though it can be less weldable.

Product Parameters

Product Name A106 Grade B Steel Pipe
Standard EN/DIN/JIS/ASTM/BS/ASME/AISI etc.
Outer Diameter Seamless: 1/4″-36″ Welding: 21.3mm-3620mm
Round Tube: 1/2″-10″ Square Tube/Rectangular Tube: 15x15mm-400x600mm
Wall Thickness Seamless: 1.25mm-50mm Welding: 1.65mm-65mm
Length 3-12 meters, Support customization
Surface Process Bright, Polished, Black
Other Services Machining(cnc), Centerless Grinding(cg), Heat Treatment, Annealing, Pickling, Polishing, Rolling, Forging, Cutting, Bending, Small Machining, etc.

Chemical Composition

A106 C Mn P S Si Cr Cu Mo Ni V
GradeA 0.25 0.27-0.93 0.035 0.035 0.10 0.40 0.40 0.15 0.40 0.08
GradeB 0.30 0.29-1.06 0.035 0.035 0.10 0.40 0.40 0.15 0.40 0.08
GradeC 0.35 0.29-1.06 0.035 0.035 0.10 0.40 0.40 0.15 0.40 0.08

Mechanical Properties

A106 GradeA GradeB GradeC
Tensile Strength min.psi 48,000 60,000 70,000
Yield Strength min.psi 30,000 35,000 40,000

Scope of Application

ASTM A106 seamless pressure pipe (also known as ASME SA106 pipe) is commonly used in the construction of oil and gas refineries, power plants, petrochemical plants, boilers and ships. These pipes must transport fluids and gases with high temperature and pressure levels.

USA Japan Germany U.K. France Italy Spain Switzerland China
AISI/SAE JIS W‐nr. DIN BS EN AFNOR UNI UNE SS GB
A570.36 STKM 12A 1.0038 RSt.37‐2 4360 E 24‐2 1311 15
STKM 12C 40 C Ne
1015 1.0401 C15 080M15 CC12 C15, C16 F.111 1350 15
1020 1.0402 C22 050A20 2C CC20 C20, C21 F.112 1450 20
1213 SUM22 1.0715 9SMn28 230M07 1A S250 CF9SMn28 F.2111 1912 Y15
11SMn28
12L13 SUM22L 1.0718 9SMnPb28 S250Pb CF9SMnPb28 11SMnPb28 1914
1.0722 10SPb20 10PbF2 CF10Pb20 10SPb20
1215 1.0736 9SMn36 240M07 1B S300 CF9SMn36 12SMn35 Y13
12L14 1.0737 9SMnPb36 S300PB CF9SMnPb36 12SMnP35 1926
1015 S15C 1.1141 Ck15 080M15 32C XC12 C16 C15K 1370 15
1025 S25C 1.1158 Ck25 25
A572-60 1.890 StE380 4360 55 FeE390KG 2145
1035 1.0501 C35 060A35 CC35 C35 F.113 1550 35
1045 1.0503 C45 080M46 CC45 C45 F.114 1650 45
1140 1.0726 35S20 212M36 8M 35MF4 F210G 1957
1039 1.1157 40Mn4 150M36 15 35M5 40Mn
1335 SMn438(H) 1.1167 36Mn5 40M5 36Mn5 2120 35Mn2
1330 SCMn1 1.1170 28Mn6 150M28 14A 20M5 C28Mn 30Mn
1035 S35C 1.1183 Cf35 060A35 XC38TS C36 1572 35Mn
1045 S45C 1.1191 Ck45 080M46 XC42 C45 C45K 1672 Ck45
1050 S50C 1.1213 Cf53 060A52 XC48TS C53 1674 50
1055 1.0535 C55 070M55 9 C55 1655 55
1060 1.0601 C60 080A62 43D CC55 C60 60
1055 S55C 1.1203 Ck55 070M55 XC55 C50 C55K 55
1060 S58C 1.1221 Ck60 080A62 43D XC60 C60 1678 60Mn
1095 1.1274 Ck101 060A96 XC100 F.5117 1870
W1 SK3 1.1545 C105W1 BW1A Y105 C36KU F.5118 1880
W210 SUP4 1.1545 C105W1 BW2 Y120 C120KU F.515 2900

Procurement Considerations

When sourcing A106 pipe, we recommend:

  1. Verify Mill Test Reports (MTRs): Ensure chemical and mechanical properties.

  2. Check Certification: ISO 9001, PED (for Europe), CRN (for Canada).

  3. Inspect NDT Results: Ultrasonic or radiographic clearance.

  4. Confirm Delivery Terms: FOB, CIF, or DDP, depending on your preference.

  5. Assess Inventory: Stock vs. made-to-order to match project timelines.

Why Choose Luokaiwei

At Luokaiwei, we combine factory-direct pricing with rigorous quality control. We maintain stock in China, the USA, and India, enabling quick shipment. Our MTRs, NDT reports, and third-party inspections are available on request. Plus, our 24‑hour quotation service means you won’t lose time waiting for pricing.

Case Study: Petrochemical Plant Pipeline

Background
A Middle Eastern petrochemical plant required 10 km of high-temperature steam lines for a new reformer unit.

Solution
We supplied A106 Grade B seamless pipes (NPS 8, Sch. 80) with MTRs and hydrostatic test certificates.

Outcome

  • Installation time reduced by 15% due to on-site prefabrication support.

  • Zero field failures in first three years of operation.

  • Client saved 12% on procurement vs. previous supplier, thanks to bundled logistics.

Frequently Asked Questions

  1. What distinguishes Grades A, B, and C?
    Grades differ primarily by carbon content and tensile strength, with Grade C offering the highest strength.

  2. Can A106 pipes be welded?
    Yes. Pre‐heat (150–260 °C) and post‐weld heat treatments are recommended to avoid stress cracking.

  3. Is cold bending acceptable?
    Cold bending is possible but must adhere to minimum bend radii per ASME B31.1.

  4. How do we prevent scaling during service?
    Apply corrosion-resistant coatings or use periodic descaling on high‑temperature lines.

  5. What is the typical lead time?
    Stock items ship within 2–4 weeks; made‑to‑order within 6–8 weeks, depending on quantity.

Luo Kaiwei Steel Company is a multi-ISO certified steel manufacturer specializing in carbon steel plates, pipes and galvanized coils since 2010. Competitive prices and ASTM/JIS compliant. Get instant quotes for bulk orders and global shipping support.

Tel: +86 15635685959

E-mail: [email protected]  

WhatsApp: +86 18912200505

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