As standard, ERW tubes come in 6.1m lengths, RHS comes in 7.65m lengths.
Approx cost (trade) for ERW is around £850 per tonne, (or £0.85p per kg)
Approx cost (trade) for RHS is around £620 per tonne, (or £0.62p per kg)
My chassis was 6 lengths 25x25x1.6 ERW and 2 lengths 19x19x1.6 ERW. Should of been around £65 + VAT, but I got it for free
