Note ·
Weight tolerance is a commercial term, not a technical one
Two mills can both meet the standard and still hand you a different invoice. The gap lives in the tolerance band.
A rebar standard gives a nominal mass per metre and a tolerance around it. Both are technical. What happens inside that band is commercial.
Where the money sits
Order by piece, pay by weight, and the tolerance decides the difference.
- On the light side of the band, the buyer gets fewer kilos than the drawing assumed.
- On the heavy side, the buyer pays for steel the structure does not need.
Neither case is a defect. Both are inside the standard.
What to put in the contract
State the tolerance you expect, state how weight is verified, and state who witnesses it.