1.Rubber expansion joint introduction:1. This product can greatly reduce pipeline system shock and noise.
And can fundamentally resolve pipe joints displacement, axial
stretch and non-concentricity.
2. By using different materials, it can be made many kinds to cater
for different medium and environment. Such as acid resistance,
alkali resistance, corrosion resistance, oil resistance and heat
3. The material is pure rubber, sealing is very good. It is in
light weight, very easy for installation .
This producthas long lifeperformance, but must be not contact with sharp metal instruments
avoid piercing the sphere.
4. The product can be used for lift and transportation of raw water
and sewage, transportation of water supply cooling cycle water
thermal power ,condensate water of metallurgy industry and chemical
2.Rubber expansion jointclassification
(1) According to appearance: concentric with diameter rubber
expansion joint, concentric reducer rubber expansion joint,
eccentric reducer rubber expansion joint.
(2) According to the structure: single ball flexible rubber
expansion joint, double sphere rubber expansion joint, spheres
rubber expansion joint, elbow sphere rubber expansion joint.
(3) According to the link the form: flange rubber expansion joint,
threaded rubber expansion joint.
3.Rubber expansion jointmaterial list:
Polyester cord fabric
Steel wire rope
4.Rubber expansion joint production progress:
(1) Raw material:we never use reclaimed raw rubber, rubber is imported from USA.
Before used, raw material should be tested, including physical test
and some chemical experiment to test the hardness and so on;
(2) Rubber pretreating and ingredients;
(3) Milling: first, rubber plastication, second, rubber mixing, we
will add rubber compounds, like sulfurzing reagent, surfactant,
softener, stabilizer, foaming agent and some special compounds, at
the same time, rubber will be extruded into plates, cut, produce 45
degree angle. The plates cannot directly be used , they should be
cooled about 24 hours.
(4) Molding: it will cost much time;
(5) Vulcanizing: the largest vulcanizing tank in Asia ø5000*15000,
right time, temperature, pressure is very important;
(6) Test and experiment: these tests should be done, hydraulic
test, resistance to vacuum, displacement of the performance, rubber
physical properties, thickness and the strength and other quality
(7) Package: out package the free of fumigation wooden case; inside
package: plastic film and textile membrane.