... coated with polyethylene powder 3. Certification: ISO/TS16 Spring Hose Clamp1. Name: spring hose clamp2. Surface treatment: coated with polyethylene powder3. Certification ... . Based on soft pipe serials product including helical compressor spring, extension spring, coil spring, chuck spring, special type spring, taper ... covered diameter 6-36 ,by means of trivalence electroplate. Spring Hose Clamp