... to serving you.Main Customer and Their Products Company NameMain ProductsMaterialPart of Technical RequirementJiangsu Pengfei Group Co.,Ltd.Support roller, kiln tyre, girth gearZG35CrMo ... ,hydraulic pressure test max 52.5MpaShuangxin Petroleum Machinery Co.,Ltd.Bop shell,cylinder head,ZG25CrNiMo,ZG30CrMoUltrasonic test Grade 2,hydraulic pressure test ...