高密美女毛片一级|日本美女三级片在线播放|成人网站在线爽爽|www久久久网站|被黑人操逼好舒服|午夜福利国产精品|日本五月丁香婷婷|成人国产精品秘久久久春色|亚洲欧美日产系列|国产又爽又粗又猛

真空定徑的模具采用螺旋式結(jié)構(gòu)，此結(jié)構(gòu)形式是公司在參照德國巴頓菲爾技術(shù)、吸取試機實踐過程中的經(jīng)驗及我公司老客戶反饋問題的基礎(chǔ)上，由我公司專業(yè)技術(shù)人員進行了多次改進，摒棄了以前模具結(jié)構(gòu)的諸多缺點，達到了各種聚烯烴類新、舊塑料皆能適用，減小了擠出壓力，塑化均勻，高速擠出成型穩(wěn)定，管材各項指標均達到國家標準。結(jié)構(gòu)為新型烯烴類組合式，管材壁厚均勻，內(nèi)外平滑，無凹凸或疤痕，定型更穩(wěn)定，尺寸更準確.
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