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we have problem with our pickling line welding machine as the following 1. Problems appears during welding of >= 2mm thickness. 2. Alignments of moving ram . 3. Eliminate the sparks appears during of >= 2mm thickness Details of welding machine : TYPE : FLUSH BUTTT WELDING MACHINE (( MIEBACH)) MODEL: SB50/800/13H NO: 100666 BUSINESS NO: 5937/15623 CONS: NO.: JK-ARC 1110.0000A STRIP WIDTH 630 mm - 1270mm STRIP THICKNESS 1.6mm - 6mm YEAR: 1984 UP SET POWER 500 KN CLAMPINGPOW