ASTM A139 is a standard specification for electric-fusion (arc)-welded steel pipe (NPS 4 and over). This specification covers five grades of electric-fusion (arc)-welded straight-seam or helical-seam steel pipe. The pipe is intended for conveying liquid, gas, or vapor. It is commonly used in various applications such as transmission of water, natural gas, petroleum, and structural supports.
The spiral weld pipe produced in accordance with ASTM A139 features a helical seam running along its length, which is formed by continuous welding of the steel strip. This manufacturing process provides excellent strength and durability, making it suitable for high-pressure and high-temperature applications.
The ASTM A139 standard specifies the mechanical properties, chemical composition, dimensions, and testing requirements for spiral weld pipes. It also includes provisions for supplementary requirements such as flattening test, tension test, hydrostatic test, and nondestructive electric test.
Typically, ASTM A139 spiral weld pipes are available in various diameters and wall thicknesses to suit different project requirements. They are commonly used in water transmission pipelines, piling, foundation supports, and structural applications due to their reliability, cost-effectiveness, and ease of installation.
Cangzhou DoubleDragon Steel Pipe Co., Ltd. is equipped to produce ASTM A139 spiral weld pipes according to customer specifications and industry standards, ensuring high-quality products that meet the diverse needs of our clients.
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