Carbon Steel Seamless Pipes

ASTM A 671 Welded Pipe & Tubes

ERW, welded and fabricated

ASTM A 671 Welded Pipe & Tubes

ASTM A 671 Welded Pipe & Tubes in ERW, welded and fabricated. Compare quotes from verified suppliers on MetalMitra, with MTC 3.1 and worldwide delivery.

  • ASTM A 671 Welded Pipe & Tubes
  • ASTM A671
  • Seamless
  • ERW
  • Welded
  • EFW
  • LSAW

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Specifications

SpecificationsA671
Pipes & Tubes1/2" NB – 60" NB
ERW Pipes & Tubes1/2" NB – 24" NB
SAW Pipes & Tubes16" NB – 100" NB
ThicknessSCH 40, SCH 80, SCH 160, SCH XS, SCH XXS, All Schedules
TypeERW / Welded / Fabricated / CDW
FormRound Pipes/Tubes, Square Pipes/Tubes, Rectangular Pipe/Tubes, Coiled Tubes, "U" Shape, Pan Cake Coils, Hydraulic Tubes
LengthSingle Random, Double Random & Required Length, Custom Size – 12 Meter lengths
EndPlain End, Beveled End, Threaded

Source ASTM A 671 Welded Pipe & Tubes from verified mills, manufacturers and stockists on MetalMitra. Options span ERW, welded and fabricated, and every order can ship with an EN 10204 3.1 certificate.

Choose seamless, ERW, welded or fabricated construction across a broad spread of diameters, wall thicknesses, schedules and lengths for process, pressure and structural lines.

ASTM A671 covers electric-fusion-welded steel pipe for atmospheric and lower temperatures. Carbon steel is the workhorse of industrial piping: strong, tough, easy to weld and economical for pressure, structural and general engineering duty.

What you can source

  • Seamless Pipes — The go-to choice for high-pressure and high-temperature lines.
  • ERW Pipes — Economical welded pipe for utility and process piping.
  • Welded / EFW Pipes — Fusion-welded construction for large-diameter runs.
  • Tubes — Round, square and rectangular tubes, plus U-bends for heat exchangers.

Key properties

  • High Strength — Dependable strength for pressure and structural work.
  • Weldability — Welds and fabricates easily in the shop or on site.
  • Cost Effective — Cost-effective across a wide range of uses.
  • Wide Availability — Available across many sizes, schedules and specs.

Applications & industries

  • Oil & Gas
  • Petrochemical
  • Power Plants
  • Water Pipelines
  • Structural Engineering
  • Construction
  • Boilers
  • Refineries
  • Fertilizer Plants
  • General Engineering
  • Fabrication

Testing & documentation

Inspection and documentation for ASTM A 671 Welded Pipe & Tubes follow the applicable standard plus any extra requirements in your PO.

  • Dimensional & visual inspection
  • Grade verification against the order
  • Chemical composition verification
  • Mechanical property testing
  • Flattening / flaring tests as applicable
  • Hydrostatic testing as applicable
  • Ultrasonic / eddy current testing as applicable
  • EN 10204 3.1 Mill Test Certificate
  • Third-party inspection (TPI) on request

Material properties

Chemical composition and mechanical properties are supplied to the limits of the governing material standard. Actual heat values are reported on the mill test certificate shared with each consignment.

Why source on MetalMitra

  • Verified suppliers — Mills, manufacturers and stockists are reviewed by the MetalMitra team before they list.
  • One RFQ, several quotes — Share size, grade and quantity once and compare offers side by side.
  • Full traceability — Heat numbers, EN 10204 3.1 MTCs and third-party inspection on request.
  • Delivered worldwide — Export-worthy packing and shipping to India, the Middle East, Africa, Europe and the Americas.

Request pricing

Post an RFQ for ASTM A 671 Welded Pipe & Tubes with your drawing or specification and receive quotes from verified suppliers.

Technical note: Values on this page are for reference. Always confirm against the governing standard, your purchase specification and the mill test certificate.

Applications & industries

  • Oil & Gas
  • Petrochemical
  • Power Plants
  • Water Pipelines
  • Structural Engineering
  • Construction
  • Boilers
  • Refineries
  • Fertilizer Plants
  • General Engineering
  • Fabrication
  • Oil & Gas
  • Petrochemical & Refining
  • Power Generation
  • Chemical Processing
  • Water & Wastewater
  • Construction & Infrastructure
  • Fertiliser

Testing & documents

Ask for the documents you need in your requirement — suppliers confirm them in their quotation:

  • Mill test certificate to EN 10204 3.1, or 3.2 with third-party witness
  • Third-party inspection (TPI) by SGS, Bureau Veritas, TÜV or your nominated agency
  • Tests as the standard or your order requires: hydro, PMI, IGC, NDT, hardness or impact tests

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