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elbow 30 °, 45 °, 60 °, 90 °, 180 ° (long radius, short radius) seamless and weld; Tee (equal diameter, reducing diameter, eccentric) seamless and weld; Seamless and welded joints of Cross (equal diameter, reducing diameter and eccentricity); Reducer (concentric and eccentric) seamless and weld; Flanging pipe (right angle, fillet) seamless and weld; Pipe cap; Head;.