Manufacturing method of novel multi-manifold joint with isosceles triangle-shaped section

The invention relates to a manufacturing method of a novel multi-manifold joint with an isosceles triangle-shaped section, and belongs to the technical field of building steel structures. The method comprises the following steps of 1, bending a steel plate into a steel pipe with an isosceles triangle-shaped cross section; 2, taking a solid steel bar at one end, and polishing two end surfaces of the solid steel bar; 3, ensuring that a plurality of inserting plates are taken and annularly distributed at equal intervals with the solid steel bar as the center to be subjected to equal-strength groove welding with the solid steel bar. 4, between every two adjacent inserting plates, welding the steel pipe to the inserting plates in an opposite-side full-length mode, and finally polishing weld joints to be flat. The method has the advantages of simple structure, good stability and long service life. The problem that a space assembly type steel structure connecting joint is low in rigidity is solved. 本发明涉及一种等腰三角型截面多管汇