declare @d float
declare @d1 float
select @d = '34343.454'
select @d1 = 676.1566545

select cast(cast (@d as decimal(12,3)) as varchar(20)) + CHAR (9) +  cast(cast (@d1 as decimal(12,3))  as varchar(20))

declare @d float
declare @d1 float
select @d = '34343.454'
select @d1 = '676.1566545'

select cast(cast (@d as decimal(12,3)) as varchar(20)) + CHAR (9) +  cast(cast (@d1 as decimal(18,7))  as varchar(20))