form tie use with washer, P-cone to fix formwork in building ... building fastener such as form tie,plastic cone,B-cone,D-cone,inner unit, D-form tie,pin,wedge,wedge pin,form tie,B-cone,D ... -cone,hex nut,flat tie ,wall tie,tie rod,wing nut,scaffold ... used in building ,channel,bridge construction to fix formworks B form tie