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Liaoning EO Technology Co.,Ltd

Practical knowledge about tubing 1

First, the classification of pipe

1, according to production methods

(1) seamless pipe - hot rolled tube, cold rolled tube, cold drawn tube, extruded tube, top tube

(2) welded pipe

(a) By process - arc welded pipe, resistance welded pipe (high frequency, low frequency), gas welded pipe, furnace welded pipe

(b) By Welds - Straight Welded Pipes, Spiral Welded Pipes

2. Classified by section shape

(1) Simple section steel pipe - round steel pipe, square steel pipe, oval steel pipe, triangular steel pipe, hexagonal steel pipe, diamond steel pipe, octagonal steel pipe, semi-circular steel ball, other


(2) Steel tubes with complex sections - unequal hexagonal steel pipe, five-fractured plumbular steel pipe, double convex steel pipe, double-concave steel pipe, melon-shaped steel pipe, conical steel pipe, corrugated steel pipe, case steel pipe, and others

3, classified by wall thickness - thin-walled steel pipe, thick-walled steel pipe

4. According to the purpose of use - pipeline steel pipe, thermal equipment steel pipe, mechanical industrial steel pipe, petroleum, geological drilling steel pipe, container steel pipe, chemical industry steel pipe, special purpose steel pipe, other


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