Oct 04, 2015· Al Dabbiya Phase1 Additional Injection Wells TieIns Contract No. /EC10825; Matrix Project No P12169 Method Statement for Piping Works at Dabbiya Clusters Page 9 of 12 Alignment Circumferential Welds Butt weld alignment shall satisfy the requirement of ANSI B and conditions stated below. Internal misalignment of pipe work shall not exceed mm in order to .