Zinc-Coated (Galvanized) Steel Pipe Winding Mesh

A810-01: Standard Specification for Zinc-Coated (Galvanized) Steel Pipe Winding Mesh

In critical infrastructure projects, the integrity and longevity of pipelines are paramount. Ensuring robust protection against harsh environments and providing necessary structural reinforcement demands adherence to proven material standards. ASTM A810-01, the "Standard Specification for Zinc-Coated (Galvanized) Steel Pipe Winding Mesh," stands as an essential guide for engineers and designers specifying materials for these demanding applications. This authoritative standard ensures the consistent quality and performance of galvanized steel mesh used in vital pipeline construction.

What is A810-01?

ASTM A810-01 provides a comprehensive set of requirements for various types of zinc-coated (galvanized) steel wire mesh. Developed by ASTM International, this standard specifically addresses mesh intended for use as reinforcement for concrete coatings on pipes, particularly those requiring negative buoyancy for subaqueous installation or robust protection in challenging operational conditions. Its primary purpose is to standardize the material properties, dimensions, and manufacturing processes of this specialized mesh to guarantee reliable performance.

Scope & Purpose

This industry-leading standard governs the manufacture and material properties of zinc-coated steel wire mesh, including both twisted hexagonal (Type TW) and welded (Type WW) fabric constructions. It defines specific types, design numbers, and coating requirements for mesh used as reinforcement for concrete applied to pipes for negative buoyancy applications, as well as for protective mechanical coatings in harsh environments. The standard does not cover the application of the mesh to the pipe or the concrete mix design itself, focusing solely on the mesh material's specifications.

Who Must Comply?

• • Primary audience: Materials Engineers, Design Engineers, Construction Managers, Quality Control Inspectors, and Procurement Specialists involved in pipeline projects.
• • Industries affected: Oil and Gas, Marine Engineering, Construction, and Infrastructure sectors.
• • Compliance nature: Voluntary, but often made mandatory through project specifications and contractual agreements.
• • Enforcement: Typically enforced by project owners, engineering firms, and third-party inspection agencies through material verification and quality assurance processes.

Key Requirements Overview

Professionals must ensure that the galvanized steel pipe winding mesh procured meets the stringent requirements outlined in A810-01. Key provisions include:

• • Material Composition: The base steel must be of a quality suitable for drawing into wire and capable of withstanding the galvanizing and fabrication processes without detrimental effects like zinc flaking.
• • Fabric Types and Designs: The standard classifies mesh into distinct types, including twisted hexagonal (TW) and various welded constructions (WW-C, WW-N, WW-S), each with specific configurations and dimensional parameters defined by design numbers.
• • Zinc Coating: Specific requirements for the zinc coating are detailed, including the classification of the coating (e.g., Class 1 or regular) to ensure adequate corrosion protection.
• • Mechanical Properties: While not explicitly detailing tensile strength for all types, the standard references related ASTM standards that govern the mechanical properties of the galvanized wire before fabrication.
• • Dimensional Tolerances: Strict adherence to specified widths, wire diameters, and mesh dimensions is required to ensure consistent performance and fit during application.

Related Standards & References

ASTM A810-01 integrates with several other essential ASTM standards to provide a