Concrete Pump Twin Wall Pipe

 The concrete pump straight pipe is made of special alloy steel ( 45Mn2).

Material and wall thickness

• Outer layer :Q345B,wall thickness is 3.5mm;
• Inner layer:(upper part)high-chromium iron Cr29,18mm\(lower part)alloy steel GCr15,6.5mm

The internal selection of the external storage is 10-15mm larger than the outer diameter of the main pipe. According to the situation of the site, it is cut into the required length and the curved rear hoop porcelain. After the hoop porcelain on the outer tube, use The tung oil gel produced by our factory is pasted onto the main pipe. If the pipe vibration is large, the spot welding is strengthened by four points (one point on one side), and the ceramic outsourcing elbow is made.

Adopt method of hydraulic test:

(1)sealing reliability test

a rising pressure to 5MPa,maintaining pressure for 3 minutes,no leaking;

b rising pressure to 10MPa,maintaining pressure for 3 minutes,no leaking;

c rising pressure to 17MPa,maintaining pressure for 3 minutes,no leaking;

(2)extreme pressure-resisting test:extreme breakdown pressure ≥17MPa

Technological process automation

1. One compression mouldig forming production line,self-heating,mold shaping,continuous trimming
2. Two heat treatmet production lines:computer control of each warm areas such as heating,heat preservation,refrigeration,output quantity is 10 pieces per minutes
3. 10 welding production lines,automation of welding,except clamping and placement by manual work,other process all do automatically,welding quality is stable and appearance is beautiful
4. One painting production line,adopt technological processes such as automatic blasting,automatic powder spraying ,automatic baking and so on,surface is shiny.
   

The main principle of the pumping pipeline is to use the high-strength ceramic material to guard the inner wall of the pipeline, and therefore the dynamic mechanical principle is employed to optimize the pipeline to attenuate the damage of the pipeline.

1. After commutation the new pipe, so as to avoid block the pipe, the pressure are often fitly exaggerated by 2-3MPa; when the 3000-4000 kilolitre is delivered, the pressure are going to be reconditioned to traditional.
2. When conveyance gravel concrete, don't fill the highest 3000 squares, in order that the fabric within the pipe doesn't exceed four-hundredth.
3. During the waiting amount, the vacuum pump ought to be used many times to avoid block the pipe.
4. After the operation is completed, all the concrete within the pipeline ought to be output, so the pipeline ought to be washed. it's strictly proscribed to scrub the pipe with a sponge ball to avoid blockage.
5. When the pipeline is clogged, it's not best to strike the pipeline with force. The reverse operation technique are often accustomed eliminate the pipeline blockage. once it's invalid, the pipe ought to be cleansed.
6. If conditions allow, it's counseled to attach the complete set of pipes to a different pump truck to clear them. If the conditions aren't offered, take away the primary arm ninety degree elbow, faucet the 3m straight pipe, and cast off the blocked concrete.