Thin head plant material, thin-walled head plant sales http://www.hebftc5.com/ Phone 0317-8210122 Mobile 13722724665 (1) take the head plant head nominal thickness minus the amount of processing thinning poor or design thickness (delta + C2) as the head plant head forming the minimum value of the thickness, both to ensure a reasonable economic use of the material, but also to meet the opening reinforcement computing requirements, while protecting the legitimate interests of the manufacturers. Therefore, the proposed design units considered in the design process thinning, consider forming the minimum thickness required of Deduction head plant head marked on the drawing. (2) the JB/T4746-2002 Appendix A "head plant head forming thinning amount is a reference to the Japanese JIS B8247 standards for reference only. Head plant head forming thinning the amount of head to head plant used different materials, different specifications of size and thickness, different processing method of forming and so on, is not a simple parameter. Therefore the safest, economical, reasonable design thickness (delta + C2) must ensure the minimum thickness after forming of the head as a head plant and consistent and JB4732 analysis and design standard.