This standard specifies the SWL worm screw lift (hereinafter referred to as the lifting phase) type, parameters and dimensions. Helical screw lift. This standard is used in metallurgy, machinery, construction, water conservancy lifting equipment used has decreased and accessories by means of propulsion, flip the worm screw lift. LDSL series bevel gear screw lift LDSL series bevel gear screw jack lifting is a basic component, its carrying capacity 2.5-50T. Helical screw lift import | endurance pilot products (certified) | spiral screw lift provided by the Texas Machinery Co., Ltd. Kun-ho. Texas Haokun Machinery Co., Ltd. (www.sdnljsj.com) (www.sdnljsj.com) is a leader in Dezhou, reducer, transmission, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Endurance leadership with the staff warmly welcome all inquiries negotiations to create a better future for endurance.