Zhucheng Yongbang Pipe Co., Ltd. Product List ISO-Kf Corrugated Hose, Highly Flexible, Thin-Wall CF Flanged Bellows (YB00301) ISO-KF Corrugated Hose, Flexible ISO-Kf Aluminum or Stainless Steel Clamp (YB00102) ISO-KF Corrugated Hose, Flexible, Annealed ISO-F Stainless Steel Vacuum Bellows, Metal Bellows Expansion Joints