The raw material of the castiron welding surface table is the high -strength cast iron HT200-300 ，whose surface hardness is of HB170-240.After the two manual handingsuch as 600℃ to 700℃ artificial annealing as well as 2 to 3years of natural aging, the T-slot has plate perfectly resists abrasion and hasstable precision.

The packingcae of weldingplate usually adopt the iron package or wooden case.since the welding As thefoudation worktbale of welding and riveting process, we must guarance thehighest flatness accuracy and keep them good maintence.

The direct of using:

1, before using weldingplatform, we should use non-corrosive gas to clean the anti-rust oil and wipeclean with a degreasing cotton,

2, measuring temperaturechanges cause accuracy errors .welding platform should be located within arange of 20 ± 5 ℃.

3, welding platform need tobe adjusted with the varitation gauge to the right level and ht load on asurface plate is distributed over the working surface.

4, when used carefully andprevent collisions ASAP.

5, If the surface plate isnot required for some days, the surface should be coated anhydrous acidicanti-rust oil, moisture-proof paper cover, and putted in a clean dry place.

6, welding platforminspection cycle is up to one year.