MAIN PRODUCTS PRODUCT DESCRIPTION Designed for oil well cementing operations, the stop collar restricts the axial movement of centralizers on casing pipes and withstands high axial forces, serving as a critical cementing accessory for casing strings. CERTIFICATES FACTORY PHOTOS EXHIBITION PACKAGE & TRANSPORTATION CONTACT INFORMATIONS Tel +86 18015889633 Whatsapp +86 18015889633 Mail leo@service-js.com Web www.jssws-oil.com