ASTM B361 is the standard specification for factory-made wrought aluminum and aluminum-alloy welding fittings, providing a focused technical reference for these fabricated components. It helps define the product expectations that support consistent quality, material selection, and procurement decisions. By identifying a clear specification framework, ASTM B361 gives manufacturers, buyers, and engineers a common basis for evaluating fittings intended for welded aluminum systems.

What is ASTM B361?

ASTM B361 is an ASTM standard that addresses factory-made wrought aluminum and aluminum-alloy welding fittings. Its purpose is to establish a recognized specification for these fittings so they can be produced and assessed in a consistent way. The standard is relevant to technical documentation, product conformity, and quality control when working with aluminum fittings designed for welded assembly. As with many ASTM standards, it supports clearer communication between suppliers and purchasers.

Where is ASTM B361 used?

This specification is typically used wherever factory-made wrought aluminum and aluminum-alloy welding fittings are selected, supplied, or inspected for welded construction. It is especially relevant in purchasing and engineering workflows where consistent fitting quality matters for aluminum piping or related welded systems. ASTM B361 may also be used during product review, specification writing, and acceptance checks to help ensure the fittings match the expected standard for the application.

Why is ASTM B361 important?

ASTM B361 is important because it gives buyers and manufacturers a shared reference for evaluating aluminum welding fittings. A clear specification can reduce ambiguity during procurement, support compliance efforts, and improve quality control across production and inspection steps. For projects that depend on fabricated aluminum fittings, the standard helps promote consistency and lowers the risk of mismatched requirements between parties. ASTM B361 is therefore useful wherever dependable product definition matters.

• Factory-made wrought aluminum welding fittings
• Aluminum-alloy fitting specification
• Quality control and conformity review
• Procurement and product comparison
• Welded assembly applications