... customer sevice Our company specialized in producing each kind of machine parts(including hot shear blades, roll cutter and so on ... : 2008, SGS In order to serve and supply you better machine parts,we sincerely hope that you could afford such information ... ,Segment Size; 2)Segment Welding Methods:Laser,High frequncy,Hot press,Cold press 3) Base Body Materail: 9CrSi,Steel,or others 4 ...