Construction AccessoriesChina Qbh Standard Customized Low Medium Carbon Alloy Stainless Steel Heavy Duty Acme Roll Square Section All Thread Threaded Long Bar Lead Screw Rod, Find details about China All Rod, Acme Long Bar from Qbh Standard Customized Low Medium Carbon Alloy Stainless Steel Heavy Duty Acme Roll Square Section All Thread Threaded Long Bar Lead Screw Rod