Of course you cannot contact openings because roller intine is rotating, and steam condensate drains and swivel joint is fixed not generated noise and damage to drainage pipes. 當然管口不能接觸內壁,因為輥筒是旋轉的,而冷凝水排水管和蒸汽旋轉接頭是固定不動(dòng)的,否則會(huì )產(chǎn)生噪音和損壞排水管。