A106 Grade B Steel Pipe

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

Chemical Composition

Mechanical Properties

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.

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.