Q235A spiral steel pipe

Q235A spiral steel pipe is a kind of carbon steel spiral steel pipe. Our commonly used materials are Q235B, Q355B and so on. Now the most commonly used material is Q235B, and Q235A is basically replaced by Q235B material due to the lower steel grade.

The meaning of the symbols in Q235A means: Q stands for yield strength, the following 235 stands for yield value of 235Mpa, and A in the last table stands for steel grade A.

The conventional grades of Q235 are divided into five grades: A, B, C, D, and E.
The difference from grade A-E is that the impact test is done at different temperatures. Grade A does not do impact test, Grade B is for impact at room temperature, Grade C is for impact at 0 degrees, Grade D is for impact at -20°C, and Grade E is for impact at -40°C.

Q235A spiral steel pipe is suitable for permanently or partially submerged steel structures, chemical plants, sewage treatment tanks, buried pipelines and steel storage tanks in oil refineries; coal mine support, mine underground facilities and ocean wharf facilities , wood products, underwater structures, wharf steel bars, heating pipelines, water supply pipelines, gas supply pipelines, cooling water, oil pipelines, etc.

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