1. Out Diameter: 38.1mm, 42.3mm, 48.3mm, 48.6mm, 60.3mm 2. Thickness: 1.5--4.5mm 3. Steel Grade: Q235, Q345, BS1387, BS1139 Standards: BS1139-1775, EN39, EN10219, JIS G3444:2004We can provide black tube with various specifications. Your enquiry is highly appreciated! Scaffolding black pipe