... OptimizationThe stainless steel processing, a mandrel molding (can minimize elbow thinned problem), and using the hot carbon steelProcessing, ... , 60 , 65 , 70 , 80Alloy Steel:ASTM A234 WP1, WP5 , WP9 , WP11,WP22, WP91Low Temperature:ASTM A420 WPL 1,WPL3 ,WPL ... orders with clientskeywordsSeamless Stainless Pipe Fitting ,Carbon Steel Seamless Pipe Fittings,Steel Seamless Pipe Fittings Carbon Steel Elbow