Sandblasting pipe Also called rubber hose for sand blasting. It is suitable for air pressure sand blasting of metal surface for rust removal, hemp removal, and sand blasting rubber hose for wet sand blasting and dry sand blasting in engineering construction.
It is suitable for air pressure sand blasting of metal surface for rust removal, hemp removal, and sand blasting rubber hose for wet sand blasting and dry sand blasting in engineering construction.
The common application fields are shipbuilding, machining, spraying industry, etc.
wear-resisting Sandblasting hose
appearance:
1. Light Abrasion resistant sand blasting hose It is composed of black, yellowish or transparent wear-resistant rubber inner layer, central fabric or cord reinforcement layer, middle rubber layer and outer rubber layer:
2. Heavy sandblasting hose consists of black, yellowish or transparent wear-resistant rubber inner layer, fabric clip or cord reinforcement layer, steel wire framework reinforcement layer, medium rubber layer and outer rubber layer
3. The steel wire braided wear-resistant sandblasting hose is composed of black, yellowish or transparent wear-resistant rubber inner layer, single-layer or multi-layer steel wire braided reinforcement layer, medium rubber layer and outer rubber layer. purpose
Abrasion resistant sand blasting hose is a kind of material conveying pipe, which is mainly used for conveying solids containing particles such as particles, gravel, cement, quicksand, mud, gypsum, etc. It is suitable for various tunnel projects, tunnels, caverns and other engineering operations. The general working pressure is less than 12 bar, and the higher bursting pressure can reach 36 bar. Sometimes the vacuum rich negative pressure parameter is 0.8 bar 0.9 bar.
Hydraulic requirements
1. The working pressure of wear-resistant sand blasting hose is 0.63MPa.
2. The hose shall be free from water seepage, local bulge, expansion and other abnormalities when conducting hydraulic test under twice the working pressure. Keep the pressure of anti-static hose for 1min, and the length change shall not exceed ± 0.8%, the outer diameter change shall not exceed ± 10%, and the torsion per meter shall not exceed 60º.
3. The bursting pressure of the hose shall not be less than 4 times of the working pressure.
Bending performance
When the hose is tested with the minimum bending radius of 10 times the nominal inner diameter at 23 ℃, the deformation KD value shall not exceed 0.8 times the outer diameter D of the hose. (K is the ratio of the outer diameter of the hose before bending minus the outer diameter after bending to the outer diameter before bending.
Wear resistance
As wear-resistant Sandblasting hose Its main performance is also the main judgment basis for users to distinguish the quality of rubber hose. The current industry standard HG/T2192-2008 stipulates that the wear volume shall not exceed 140mm³ according to method A of ISO 4649;. The test method used in the previous old industry standard is: Akron wear method - wear volume not more than 0.8cm³/ 1.61km。 Although this method has been replaced by method A of ISO 4649 since 2008, some domestic hose users still use this method.
Other performance
Other properties, such as interlayer bonding strength, ozone resistance, mechanical properties under verification pressure, are also indicators to consider the quality of sandblasting pipes. For details, please refer to the current industry standards of sandblasting pipes in China.
