a106 seamless pipe

ASTM A106 / ASME SA106 Seamless Pipe - High-Temperature Carbon Steel Piping Solutions

Product Overview

JS FITTINGS' A106 Seamless Pipe delivers ASTM-certified high-temperature performance for critical industrial applications. Manufactured from killed steel through precision hot-finished processes, our seamless carbon steel pipes eliminate weld seam vulnerabilities while maintaining structural integrity at temperatures up to 425°C (800°F). With dual API 5L and ASTM A106 standard compliance, our 30,000-ton annual production capacity ensures consistent supply for Power Generation, petroChemical, and oil & gas projects requiring zero-failure tolerance in high-pressure environments exceeding 2000 psi.

Key Features & Advantages

· Eliminated Weld Seam Risks: Seamless construction prevents the weakest failure points found in welded alternatives

· Killed Steel Manufacturing: Deoxidation process creates uniform, non-porous internal structure for superior reliability

· Thermal Cycling Resistance: Withstands continuous temperature fluctuations without fatigue cracking

· Precision-engineered beveling: Ready-to-weld pipe ends reduce installation time and labor costs

· Uniform wall thickness: Minimum wall thickness shall not be more than 12.5% under the nominal thickness per ASTM A106

· High-pressure capability: Tested to 1.5x design pressure for safety margin compliance

Technical Specifications

 Standards & Certifications

· ASTM A106/ASME SA106: Primary specification for seamless carbon steel pipe

· API 5L: Line pipe certification for oil and gas transmission

· ISO 9001:2015: Quality management system certification

· CE Marking: European Conformity for pressure equipment directive

· GOST-R: Russian Federation technical standards compliance

Chemical Composition & Mechanical Properties

Our A106 Grade B seamless pipes maintain precise chemical balance for optimal weldability and strength. The controlled carbon content below 0.30% reduces welding crack susceptibility, while manganese content between 0.29-1.06% provides necessary strength enhancement. Phosphorus and sulfur levels remain below 0.035% each to prevent hot shortness and brittleness.

Mechanical testing includes tensile strength verification at ≥415 MPa, yield strength confirmation at ≥240 MPa, and Charpy V-notch impact testing delivering ≥27J at -20°C for low-temperature service reliability.

Manufacturing Process

Our seamless pipe production utilizes rotary piercing technology followed by hot-finished rolling. The process begins with solid steel billets heated to 1200°C, then pierced through mandrel mills to create the hollow form. Multiple rolling passes achieve precise wall thickness while maintaining dimensional accuracy within API 5L tolerances.

Heat treatment involves controlled cooling to achieve optimal grain structure and mechanical properties. Final processing includes precision cutting, beveling, and hydrostatic testing at 1.5x design pressure to verify structural integrity.

Surface Finish & Coating Options

· Black Finish: Standard mill finish with protective oil coating for storage

· Galvanized Coating: Hot-dip galvanizing per ASTM A53 for corrosion resistance

· Epoxy Coating: Internal/external fusion-bonded epoxy for chemical protection

· 3LPE Coating: Three-layer polyethylene for buried pipeline applications

· Custom Coatings: Specialized protective systems for marine or chemical environments

Applications

A106 Seamless Pipe serves critical infrastructure across multiple sectors. In power generation facilities, you benefit from reliable steam distribution systems and boiler tube assemblies that withstand thermal cycling. Oil and gas refineries utilize our pipes for process lines in cracking units and distillation columns where seamless construction prevents corrosion penetration at weld zones.

Compression stations depend on our high-pressure manifold piping to maintain structural integrity under extreme pressure conditions. The seamless design eliminates potential failure points in gas transmission headers and interconnecting piping systems.

Packaging & Delivery

Standard packaging includes plastic end caps, bundling with steel straps, and wooden skids for container shipping. Our dedicated logistics network covers Central Asia and Middle East markets with specialized handling for large-diameter pipes. Delivery lead times range from 15-30 days depending on specification requirements and order quantity.

Customization Service

We provide comprehensive customization including non-standard wall thickness, special length cutting up to 18 meters, custom beveling angles for specific welding requirements, and material traceability documentation. Our technical team assists with material selection based on your specific temperature, pressure, and corrosion requirements.

Quality Control

Every A106 Seamless Pipe undergoes rigorous inspection protocols. Dimensional verification uses laser micrometers for outer diameter measurement within ±1% tolerance. Ultrasonic thickness gauging ensures wall thickness compliance within ±12.5%.

Chemical composition analysis through spark OES analyzer confirms grade specification adherence. Mechanical testing includes tensile, hardness, and impact testing per ASTM standards. Hydrostatic pressure testing validates structural integrity, while ultrasonic testing detects internal defects down to 2% wall thickness.

Certificates

Our products meet or exceed industry standards:

• ASTM A106 compliance
• ISO 9001:2015 Quality Management System
• CE marking for European market
• GOST-R certification for Russian market
• PED 2014/68/EU for pressure equipment

Customer Reviews

"I am extremely impressed with the level of professionalism and efficiency displayed by the JS FITTINGS team. Their in-depth technical knowledge and expertise have been instrumental in our projects. The team's attention to detail and commitment to accuracy were evident in their handling of exporting documents."

"I have been consistently impressed with the service provided by JS FITTINGS, particularly their efficient production and fast delivery times. We placed a large order that we expected to take weeks to fulfill, but JS FITTINGS completed production ahead of schedule."

"The quality of the seamless pipe fittings provided by JS FITTINGS is truly top-notch. Each piece displays excellent workmanship, robust construction, and precision that ensures perfect fit every time."

FAQ

Q: What's the difference between A106 Grade B and Grade A?

A: Grade B offers higher tensile strength (415 MPa vs 330 MPa) and slightly higher carbon content, making it more suitable for higher pressure applications.

Q: Can A106 seamless pipes be welded?

A: Yes, the controlled carbon content makes A106 pipes highly weldable using standard welding procedures without preheating requirements.

Q: What's the maximum operating temperature?

A: Grade B can operate continuously at temperatures up to 425°C (797°F) per ASME B31.3 guidelines.

Q: How do you ensure dimensional accuracy?

A: We use automated laser measurement systems and ultrasonic gauging to maintain tolerances within ASTM A530 specifications.

Q: Can A106 Grade B be used for low-temperature service?

A: While A106 is designed for high temperatures, it can be used down to -29°C. For temperatures below this, we recommend our ASTM A333 Grade 6 low-temperature pipes.

Contact Us

Ready to secure reliable high-temperature piping solutions? Contact our technical team at admin@jsfittings.com mailto:admin@jsfittings.com for specifications and pricing.