Question 1

Can I mix E250 and E350 on the same joint?

Accepted Answer

Only with an engineered weld procedure and connection design — ask the consultant.

Question 2

Do I need impact test certificates?

Accepted Answer

Only when specified for low-temperature or seismic/class-of-structure reasons.

Question 3

Why do two E250 quotes differ in weight?

Accepted Answer

Different thickness tolerance bands, widths, lengths, or density assumptions — normalize dimensions.