1.name:carbon steel elbow 2.standard:ASME,GB,DIN,JIS,GOST 3.LR,SR ... OF CURVATURE1D-1.5DPIPE FITTINGSAmerican standard, Japanese standard, German standard elbow, tee,reducer, pipe cap, flange and so on. We have ... happy cooperate with you! sch80 seamless a234 wpb carbon steel elbow