1. API Casing float shoe and float collar Descriptions: Float collar and float shoe(guide shoe) are necessary conventional accessories for down-structure of casing string. float collat and float shoe is a heat-resisting, sealer and drillable tool. it's join easy and replace for guide shoe and casing shoe. it's used to protection casing and production casign, also used to deep well and ultra deep well. it classify ordinary type and self fill-up type according to way of drilling fluid get into. 2. API Casing float shoe and float collar Features: 1) All inner parts are made of easily drillable aluminum alloy 2) The device can be connected directly to same type casing 3) Reliable back-pressure leak proof structure, enable grout or slurry flow with less resistance 4) Valve seat and valve disk can effectively prevent grout from flowing back 5) Hardness of base material is equivalent to API Spec N-80 6) API spec.Q1 and ISO9000 certification