Everflow Supplies PCBL1548 48" Long Pre-Cut Black Steel Pipe with 1-1/2" Nominal Size Diameter PIPE Type: black pipe 1 1/2" x 4 feet, male (NPT) National Pipe thread taper made of superior rough coating steel for commercial and residential application PIPE SPECS: black coated schedule 40, 150 PSI PIPE FUNCTION: Used for indoor in low pressure plumbing applications such as water, oil, natural gas, LP, steam and air HIGH QUALITY: durable pipe steel materials manufactured using advanced technology RATING APPROVALS: meets ASTM standards and NSI technical specification EXTRA PROTECTION: shipped with plastic end caps to prevent pipe thread damage for the duration of transport DECORATIVE USES: pipes can be used for decorative purposes for industrial feel in room dcor, furniture, shelves and accessories.