Flexible rubber joint can solve all kinds of pipelines through the mouth of the migration, the axial expansion and concentricity, generally used to civil building water supply and drainage engineering, fire control pipe network pipeline pump unit to undertake, sewage pipe connection, high pressure gas liquefaction medium transportation, oil, ships, etc.Is the most commonly used in today's world pipe fittings of a rubber joint.

With the noise of the pipeline, good sealing, light weight, easy installation and maintenance, long life and other characteristics.This product is enhanced by the fabric rubber parts with flat union, set of metal flanged or threaded pipe flange, used for pipeline vibration isolation noise reduction, compensation displacement of the joint.It is a kind of high elasticity, high air tightness, medium resistance and weatherability of pipe joint.National inspection in a flexible rubber joint of new test method: appearance quality of visual inspection, structure size with vernier caliper and tape test, the inside of the rubber parts traveler with X-ray inspection.

Rubber joint products appearance inspection: 1. The visual rubber surface smooth, no obvious mechanical scratches and cracks.2. The visual surface of rubber products have no obvious convex concave phenomenon, and surface quality is less than + / - 1 mm.3. The diameter of rubber products in the national standard of plus or minus 2 mm.Rubber rubber slip physical and mechanical properties test: 1. The rubber tensile strength, elongation at failure, pull a permanent deformation test according to GB/T 528.2. Rubber brittleness temperature test according to GB/T 1682.3. The adhesion of vulcanized rubber and fabric strength test according to GB/T 532.4. Rubber hot air aging test according to GB/T 3512.5. Rubber acid or alkali resistance test according to GB/T 1690-92, the provisions of chapter 10 in test liquid - H2SO4 10% or 10% NaOH solution.Soft rubber joints pressure and vacuum test: 1. The test pressure and burst pressure test (GB/T 5563-85 in 6.3 rules.2. Products vacuum test (GB/T 5567-85, chapter 2 ~ 5 rules.3. The displacement of the performance test of product in accordance with appendix A, through product quality inspection in accordance with GB/T 5750.