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Corrugation 68mm x 13mm

Corrugation 76mm x 25mm

Corrugation 150mm x 50mm

Corrugation 300mm x 110mm

Corrugation 380mm x 140mm

Corrugation 200mm x 55mm

Corrugation 400mm x 150mm

Corrugation 75mm x 25mm

Corrugation 125mm x 25mm

Corrugation 68mm x 13mm

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Method of proceeding of the Spiral Pipe

We are the professional manufacturer of  spiral pipe, corrugated metal culvert pipe, corrugated steel culvert pipe,  steel culvert, corrugated metal culvert, arch corrugated steel pipe and highway  corrugated steel pipe culverts in China. They all have wide range of applications in industrial areas.

Method of proceeding when calculating the durability of multi-elements steel  structure type multiplate MP150:

- define function of structure.

- define of the required durability of the structure

- define of conditions of the environmental aggressiveness(water, backfill,  air) - choice the governing corrosion model.

- specifying of the plate thickness with regards to static calculations(acc.  to Sundquist - Petterson method)

- specifying of corrosion protection(thickness of zinc coating, paint  coating, paved bottoms, etc)

- define of protection layers in upper and lower sphere of the structure with  allowance the corrosion progress in surrounding environments with described  aggressiveness.

- calculation of durability period of the structure in upper and lower  part.

- comparison of the structure durability in the critical parts with the  required value.

- decision about acceptance of the structure or about rejection and change of  parameters of corrosion protection.

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