LTD,the new type of bonding pad roll with complex curve roller contour is design,it avoid point and arc touching between the bevel edge of outside welding and roller sur.

• 根据宝鸡石油钢管有限责任公司承揽的印度“东气西输管线”钢管生产工艺要求,设计了一种复合曲线辊型的焊垫辊。