But stainless steel tube outer wall and the outer wall of the copper pipe which pipe beadsetting 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
The design of auto-body forming process commonly includes edge un-wrapping, choice of drawing direction, roughcast reckoning, design of addendum, adding the binder surface and setting the draw bead.