... Quality:GB/T 19001-2008---ISO 9001:2008Series: Male tee, female tee, male elbow , female elbow, coupling , straight-through ... 1.If used in normal palces for long time <700, could choose C=1.25 .If ... used long time for important places for long time >=70, cold choose C=1.52 ... line !Photos for reference: Also have Reducer Tee, female tee, male tee ; Straight fitting, reducer fitting; 45/90 ...