But stainless steel tube outer wall and the outer wall of the copper pipe which pipe bead setting more is still unclear, but can say two pipe wall mostly film condensation.
但不锈钢管外壁和铜管外壁哪种管材的珠状凝结更多尚不清楚，但可以说两种管材外壁大部份是膜状凝结。
2
Care must be exercised to avoid damaging the tire bead or inner tube.