Wholesale ASTM A106 / ASME SA106 Seamless Steel Pipe Manufacturer & Exporter Manufacturer and Supplier

ASTM A106 / ASME SA106 Seamless Steel Pipe Manufacturer & Exporter

Short Description:

ASTM A106 and ASME SA106 seamless carbon steel pipes stand out for stable performance under high temperature and high pressure environments, with three standard grades A, B and C for selection. They serve as core piping materials for oil & gas transportation, power generation boilers and various industrial piping projects.

At Royal Steel Group, every pipe undergoes strict quality verification. We supply complete MTC material test certificates and deliver seamless export solutions to customers across the globe.

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Standard: ASTM A106 / ASME SA106

Grade: Grade A, Grade B, Grade C

Surface: Black, FBE, 3PE (3LPE), 3PP

Applications: oil, gas, power, and industrial pipelines

Certification:: ISO 9001, SGS、BV、TÜV Certificate +ASTM A106 Compliance Certificate+MTC+ Hydrostatic Test + Weld Test + Chemical & Mechanical Report

Delivery time: Stock 20-25 working days

Payment Term: T/T,Western Union

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Product Introduction

Astm A106 and ASME SA106 define seamless carbon steel pipes engineered to operate steadily under high-temperature and high-pressure environments. This pipe standard ranks among the most commonly adopted specifications for industrial piping work.

Pipes manufactured to A/SA106 standards cover a broad spectrum of industrial usage scenarios. Typical application fields include data center construction, oil & gas facilities, refineries, power stations, petrochemical complexes, industrial boilers, marine shipbuilding and custom mechanical components, alongside many other industrial projects.

Royal Steel Group Stocks a Full Range of A/SA106 Pipe and Tube in:

Available grades: Grade A & Grade B & Grade C

Outer diameters cover NPS 1/4" up to 36"

Schedule range: Sch 20 to XXH

Maximum wall thickness reaches 5.500 inches

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Key Characteristics

Seamless manufacturing design: Free of welded joints, delivering superior structural strength and outstanding stability amid fluctuating pressure and temperature cycles.

High heat resistance: Compliant with ASME standards, the pipe can withstand continuous operating temperatures as high as 750°F (400°C).

Precise dimensional control: Uniform wall thickness is strictly maintained, which guarantees long-term pressure containment performance.

Easy to fabricate and process: The carbon steel material supports regular welding and machining operations for all common fabrication workflows.

Surface Finish

Black Painting

FBE

3PE (3LPE)

3PP

Chemical Requirements

Chemical Requirements	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
Phosphorous, max. %	0.035	0.035	0.035
Sulfur, max. %	0.035	0.035	0.035
Silicon, min.%	0.1	0.1	0.1
Chrome, max. %	0.4	0.4	0.4
Copper, max. %	0.4	0.4	0.4
Molybdenum, max. %	0.15	0.15	0.15
Nickel, max. %	0.4	0.4	0.4
Vanadium, max.%	0.08	0.08	0.08

Tensile Requirements

Seamless
	Grade A	Grade B	Grade C
Tensile Strength, min., psi	48,000	60,000	70,000
Yield Strength, min., psi	30,000	35,000	40,000

Performance and Applications

ASTM A106 references ASTM A530 for wall thickness tolerances of seamless pipe, as ASTM A530 outlines the general technical requirements adopted by A106.

The specification stipulates that wall thickness measured at any location must not fall below 87.5% of the designated nominal wall thickness (a maximum minus tolerance of 12.5%).

Permissible Weight Variations Per Foot

For pipes NPS 12” and smaller, the weight of each single length may not exceed ±10% over and -3.5% below the theoretical specified weight.

For sizes above NPS 12”, individual pipe lengths shall have a weight tolerance of +10% and -5% relative to the nominal weight.

Unless special requirements are agreed upon, pipes NPS 4” and below can be weighed by batch. All pipes larger than NPS 4” must be weighed individually.

Permissible Variations in Outside Diameter

As adopted across steel pipe manufacturing facilities, A106 seamless pipes are manufactured in accordance with an outside diameter tolerance of ±1%.

Relevant Codes & Standards

A/SA106 seamless pipe is widely recognized and specified for use within the following industry codes:

ASME B31.1 Power Piping

ASME B31.3 Process Piping

ASME B31.4 Liquid Hydrocarbon Pipeline Transportation Systems

ASME B31.8 Gas Transmission & Distribution Piping

ASME Boiler and Pressure Vessel Code (BPVC)

FAQ

Q1: What is Astm A106 Seamless Steel Pipe?

Carbon seamless pipe for high-temperature & high-pressure service, widely used in power, petrochemical and oil & gas sectors.

Q2: ASTM A106 vs ASME SA106?

Identical technical requirements. SA106 is the ASME version required for pressure vessel and power projects.

Q3: Available grades?

Grades A, B, C. Grade B is the most commonly specified grade.

Q4: Typical applications?

Oil & gas lines, boiler/steam piping, power plant and petrochemical high-temperature pipelines.

Q5: What sizes can you supply?

Comprehensive range including SCH40, SCH80, SCH160. Custom sizes supported.

Q6: Can A106 pipe work under high pressure?

Yes. It is designed for high-temperature and high-pressure industrial working conditions.

Q7: What documents come with goods?

MTC, chemical & mechanical test reports, full export documents. SGS/BV third-party inspection available.

Q8: Surface treatment options?

Black paint, anti-rust oil, PE wrapping. Custom coatings upon request.

Q9: Seamless vs welded pipe?

Seamless pipe has no weld seam, offering better pressure and high-temperature performance.

Q10: Why select Royal Steel Group?

ASTM/ASME compliant products, stable supply, strict QC, custom specifications, global shipping and complete technical documentation.

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