This is a A53 Carbon Steel Schedule 40, 4"x 21' Pipe with a Plain End.

Electric Resistance Welded. (ERW) used for bending, flanging and standard welding jobs. Pressure tested complies with ASTM A 53 Grade B Type E (Electrical Resistance Welded).

Carbon steel pipe is compliant ASTM A53 specifications. ASTM A53 Steel is intended for mechanical and pressure applications and is also acceptable for ordinary uses in steam, water, gas and air lines. It is suitable for welding and for forming operations involving coiling, bending, and flanging, subject to certain qualifications. Suitable for framework, gym equipment, awnings and much more. They offer versatility, simply cut to a custom measurement for your specific project needs with a metal saw.

This pipe can be custom cut to lengths of your choice, please click "add cuts" to customize the exact measurements you need.