<table border="1" cellspacing="0" cellpadding="8"><tbody><tr><td>Pipe Class</td><td>-</td><td>Connectivity</td><td>male/female Flange</td></tr><tr><td>Application</td><td>Heating Systems, hvac & refrigeration systems</td><td>Surface Treatment</td><td>-</td></tr><tr><td>Technic</td><td>Casting</td><td>shape</td><td>Equal</td></tr><tr><td>head code</td><td>round</td><td>Mounting hole diameter</td><td>-</td></tr><tr><td>customized support</td><td>OEM, ODM</td></tr></tbody></table>