ASTM A139/A139M
Standard Specification for Electric-Fusion (Arc)-Welded Steel Pipe (NPS 4 and Over)
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- Language: English
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About This Item
ASTM A139/A139M is the ASTM standard for electric-fusion (arc)-welded steel pipe in NPS 4 and over. It provides a technical reference for pipe products made by an arc-welding process, helping buyers and engineers align on the requirements associated with this pipe type. As a product-page standard, ASTM A139/A139M supports clearer specification, comparison, and procurement of welded steel pipe where consistent quality and documented conformance matter.
Purpose of ASTM A139/A139M
The purpose of this standard is to define the specification framework for electric-fusion welded steel pipe of larger nominal sizes. It gives users a common basis for understanding what the pipe designation covers and how the product is categorized in ASTM practice. By identifying the welding method and size range in the official standard title, it helps support consistent communication between manufacturers, purchasers, inspectors, and technical teams working with welded pipe requirements.
Common use cases of ASTM A139/A139M
This specification is commonly used when selecting or evaluating electric-fusion welded steel pipe for applications that call for NPS 4 and larger pipe sizes. It is relevant in workflows involving pipe procurement, submittals, specification review, and quality assurance checks. Because the title focuses on welded steel pipe, the standard is most useful where buyers need a clear ASTM reference for product conformity and where documentation of the pipe type is important.
Why ASTM A139/A139M matters
ASTM A139/A139M matters because it supports consistency in how welded steel pipe is specified and reviewed. In procurement and compliance settings, a recognized ASTM designation reduces ambiguity and helps align expectations for product evaluation, inspection, and quality control. Using the standard can also help reduce risk by giving stakeholders a shared technical basis for ordering and verifying electric-fusion welded pipe against an established specification.
- Electric-fusion (arc)-welded steel pipe
- NPS 4 and larger sizes
- Specification-based procurement
- Quality and compliance reference
- Technical product evaluation
- Publication Date: 2022-09-20
- Publisher: ASTM
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