<p><b>General</b></p><p>These fittings are not standardised and are manufactured in accordance</p><p>with the recommendations of the ASME B 31.3. code</p><br><p><b>Material </b></p><p>ASTM A 105 - A 350 - A 182 - A694; manufactured by forging</p><br><p><b>Range</b></p><p>Class 3000 : 1/8” to 4” / Class 6000 :1/2” to 2”</p><br><br><p><b>Description</b></p><p>This type of fittings is installed either straight or at an angle to the main pipe.</p><p>As the bearing surface fits the shape of the pipe exactly, the outside diameter</p><p>of the pipe must be known. Range : NPS 3/8&quot; to 60&quot;. The main pipe and the</p><p>fittings are connected by means of a fillet weld.</p><p>The fitting and the branch pipe can be connected in several different ways.</p><p>Outlet radius of branch fittings have been unified in order to allow, generally</p><p>speaking up to size 4&quot;, the use of same fitting on different run pipe sizes, with</p><p>a maximum gap of 1/32&quot; (0,8 mm) between the top of the run pipe and the base</p><p>of the fitting. For outlet sizes over 4&quot;, usually a specific radius is required for each</p><p>run size. Each fitting is marked with its nominal size (outlet diameter) and the</p><p>range of run sizes on which it can be welded.</p><div class="scrollTarget"><img src="/webservice/pictures/technical-description/4119027.png" class="scrollImage" alt="scrollImage" /></div><br>