Search result for "truss beams single-pipe pipe joints that can freely design length, pitch, height, and width, and assemble a truss structure with single-pipe pipes! strength is sufficient(トラス梁 長さ・ピッチ・高さ・幅を自由設計、単管パイプでトラス構造を組立て可能な単管パイプジョイント!強度は十分)"