Black Steel Pipe, 3-1/2"

Black Steel Sch40 Pipe, 3-1/2"

This Black Steel Schedule 40 Pipe (3-1/2") is a heavy-wall carbon steel pipe designed for structural, mechanical, and low-pressure fluid applications. Manufactured to Schedule 40 specifications, it offers a strong balance of wall thickness and workability, making it a dependable choice for fabrication, framework, and general construction. The black (uncoated) finish is well-suited for welding and custom fabrication—ready to be cut, threaded, or welded into place wherever solid steel backbone is required.

Country of Origin
Varies by production batch

Key Features / Specifications

• Material: Black carbon steel
• Nominal Pipe Size: 3-1/2"
• Schedule: Schedule 40
• Wall Thickness: Per Schedule 40 standards for 3-1/2" pipe
• Finish: Uncoated black steel (mill finish)
• End Type: Plain end (unless otherwise specified)
• Standards: Typically manufactured to ASTM pipe standards (verify specific certification if required)
• Weldability: Excellent for welding and fabrication
• Common Uses: Structural support, mechanical systems, low-pressure air or water lines (not for corrosive environments without protection)

Ideal For

• Structural posts, frames, and supports
• Equipment fabrication and repair
• Shop and construction projects
• Mechanical and low-pressure piping systems
• Projects where you want serious steel strength without stepping up to heavy-wall pipe