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ASTM A671 CC65 CL 12 EFW Steel Pipes: High-Strength Welded Pipes for Industrial Applications

ASTM A671 CC65 CL 12 EFW pipe is a high-quality EFW pipe widely used in oil, gas, chemical, and general industrial piping systems. These pipes meet the requirements of ASTM A671 standards and are designed for medium- and high-pressure fluid transport and structural applications. They offer excellent weldability and mechanical properties, making them ideal for industrial piping engineering.

ASTM A671 STEEL PIPES (1)
ASTM A671 STEEL PIPES (2)

Material Specification

The pipes are produced from low alloyed high strength CC65 steel, the chemical composition is tightly controlled to provide best weldability, corrosion resistance and high temperature capabilities. The steel has a homogeneous grain structure and satisfies high structural and pressure demands employed in industry.

Chemical Composition

Chemical Composition (Typical Values)
Element Carbon (C) Manganese (Mn) Silicon (Si) Sulfur (S) Phosphorus (P) Nickel (Ni) Chromium (Cr) Copper (Cu)
Content (%) 0.12–0.20 0.50–1.00 0.10–0.35 ≤0.035 ≤0.035 ≤0.25 ≤0.25 ≤0.25

Note: Actual chemical composition may slightly vary per batch but always meets ASTM A671 CC65 CL 12 standards.

Mechanical Properties

Property Value
Tensile Strength 415–550 MPa
Yield Strength ≥280 MPa
Elongation ≥25%
Impact Toughness Standard-compliant, optional low-temperature impact tests available

Applications

ASTM A671 CC65 CL 12 EFW steel pipes are commonly used in:

  • Oil and gas pipelines
  • Chemical process pipelines
  • High-pressure liquid transport systems
  • Industrial boilers and heat exchangers
  • Structural supports and mechanical components

Packaging and Transportation

Protection: Pipe ends sealed, internal and external anti-rust oil, wrapped with rust-preventive paper or plastic film

Bundling: Strapped with steel bands in bundles; wooden supports or pallets available upon request

Transport: Suitable for long-distance shipment via sea, rail, or road

ROYAL GROUP

Address

Kangsheng development industry zone,
Wuqing district, Tianjin city, China.

E-mail

sales01@royalsteelgroup.com

Phone

Sales Manager: +8613652091506

Hours

Monday-Sunday: 24-hour Service

Post time: Nov-25-2025