spiral seam pipe 螺旋缝管
Spiral-Seam Tube 风管及其异形管 ; 配件
spiral seam tube 螺旋焊缝管
welding of spiral seam 螺旋缝焊接
spiral weld seam 螺旋焊缝
Defect categories and features of spiral seam cracking are studied based on spiral seam cracking facts in Northeastern Oil Pipeline Networks.
针对东北管网多次发生螺旋焊缝开裂事故的事实，研究了造成螺旋焊缝开裂事故的缺陷类型和特征。
The most common method is clipper and spiral seam. It can connect the filter fabrics and filter screens effectively into ring, long life time, no wrinkles.
最常用的是钢扣连接，螺旋连接，能有效将滤布、滤网连成环形，并且使用寿命长，滤布不打皱。
The defects will be found in the seam side with ultrasonic inspection but hardly found with X ray inspection as the small diameter spiral pipe production with the split strip steel.
采用纵剪带钢生产小口径螺旋焊管时，超声波检验经常在焊缝的一侧发现缺陷波，而X射线拍片检验却很难发现。
应用推荐