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真空定径的模具采用螺旋式结构，此结构形式是公司在参照德国巴顿菲尔技术、吸取试机实践过程中的经验及我公司老客户反馈问题的基础上，由我公司专业技术人员进行了多次改进，摒弃了以前模具结构的诸多缺点，达到了各种聚烯烃类新、旧塑料皆能适用，减小了挤出压力，塑化均匀，高速挤出成型稳定，管材各项指标均达到国家标准。结构为新型烯烃类组合式，管材壁厚均匀，内外平滑，无凹凸或疤痕，定型更稳定，尺寸更准确.
The vacuum sizing die adopts the spiral structure, which is based on the company's experience in the process of trial production and the feedback from our old customers. The professional technicians of our company have made many improvements and abandoned many shortcomings of the former die structure, so that all kinds of new and old polyolefin plastics can be applied and reduced Small extrusion pressure, uniform plasticization, stable high-speed extrusion, all the indexes of the pipe meet the national standards. The structure is a new type of olefin combination type, with uniform wall thickness, smooth inside and outside, no bump or scar, more stable setting and more accurate size