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Heiyan Group manufacture seamless elbow.1. Seamless Elbow has long radius type and short radius type. Long radius type 's curvature radius
equal to 1.5 double of NPS pipe,so named as R=1.5D. Short radius type's curvature radius equal to 1double of NPS pipe,so named as R=1D. D is 90 Degree Erw Elbow's elbow diameter,R is curvature
radius.
2.Material: carbon steel
3.Collect by grade,it has Sch5s,Sch10s,Sch10,Sch20,Sch30,Sch40s,STD,Sch40,Sch60,
Sch80s,XS;Sch80,Sch10,Sch120,Sch140,Sch160,XXS, it is same with American standards.
