<table border="1" cellspacing="0" cellpadding="8"><tbody><tr><td>Pipe Class</td><td>None</td><td>Connectivity</td><td>Welding</td></tr><tr><td>Application</td><td>Cold storage</td><td>Surface Treatment</td><td>None</td></tr><tr><td>Pipe Features</td><td>Corrosion-resistant</td><td>Technic</td><td>None</td></tr><tr><td>shape</td><td>Reducing</td><td>System of Measurement</td><td>Metric</td></tr><tr><td>head code</td><td>Hexagon</td><td>Mounting hole diameter</td><td>None</td></tr></tbody></table>