What is the Hdpe Pipe?

Raw Material of Polyethylene Pipe

Polyethylene Pipe, Pe 32 class is developed in 1950 with improving technology  and low density. 3rd Generation PE 100 Polyethylene raw materials  are used in drinking water pipelines, desalination plants, biological treatment plants, swimming pool piping, sea discharge lines, gravity flow water lines, gas stations , irrigation lines, compressed air lines, cooling-heating lines, pre-insulated sheathing for pipes. Because Low Density Polyethylene Pipe is economical and has high-performance in many areas, such as sewer lines has been a solution. (C2H4) has the general formula of crude oil of 97% polyethylene and is a thermoplastic polymer as shown. The production of raw materials, entirely depends on the availability and price of crude oil. Polyethylene density  is divided into three main groups according to their crystalline structure percent.

• Low density polyethylene raw material (LDPE)
• Medium density polyethylene raw materials (MDPE)
• High density polyethylene raw materials (HDPE)

According to other types of raw materials as well as their field of high performance and long life due to the strength of economy most preferably 97% of the product which is used crude for the production of the polyethylene raw material. So the production of polyethylene raw materials, the availability and the price depends entirely on crude oil. It also has many superior properties compared to other thermoplastic polyethylene.

• HDPE Pipe is resistant to weather conditions
• HDPE Pipe High resistance to tearing and pressure
• HDPE PipeDespite high resistance to stress cracking
• HDPE Polyethylene Pipe -30 And -60 degree to strength
• High Density Polyethylene Pipe have corrosion resistance
• Easy and reliable assembly of HDPE Pipe
• In HDPE Pipes Lower level compared to metal pipe friction losses
• HDPE Pipes, Reduced flow noise
• Electrical full insulation, it is a good thermal insulation
• HDPE Pipes are non toxic.
• HDPE Pipe is suitable for radioactive waste.

Advantages of HDPE Pipes

HDPE pipes with a history of 60 years of technological developments that have positively influenced and until today has become one of today’s most preferred tube.
• HDPE pipes; It maintains the general properties of the fluid inside.
• HDPE pipes; moss on hold due to the inner surface can be used in drinking water systems.
• HDPE pipes; Due to its chemical nature, it has a high resistance to chemicals.
• HDPE pipes; To take shape and slope of the sloping terrain by laying is very simple due to be flexible.
• HDPE pipes; Due to its high elasticity properties, for use in areas where a lot of seismic activity is very comfortable. It can orient itself according to the direction of movement of ground motion and does not break.
• HDPE pipes; Other types of pipes
• HDPE pipes; welding and assembly methods are very simple.
• HDPE pipes; Easy to carry because of the weight and thus shipping is cheap.
• HDPE pipes; It is highly resistant to acids and alkalis. Only damaged by nitric acid.
• HDPE pipes; Environmentally Friendly.
• HDPE pipes; Are not affected by underground, there is no refractive properties.
• HDPE pipes; it do Not conduct electricity.
• HDPE pipes; a good level of friction, wear and has a rustproof.
• HDPE pipes; It is strong against microorganisms.

Polyethylene Pipe Joining Techniques

Melted with each other to combine the polyethylene pipe or fittings or are connected with mechanical fittings. Melted with each other to combine the polyethylene pipe or fittings are connected with mechanical fittings. Various fittings for remaining outside of polyethylene pipes, flanges or developed in accordance with the objectives of the transition adapter provided with connection.

Known Combining methods for PE Polyethylene Pipes;
1) Electrofusion (EF),
2) Butt-fusion (Butt Welding)
3) Socket Supply
4) Flange Connection

1) Electrofusion (EF) Welding Types of HDPE PE Pipes

Electrofusion Welding Machine by heating by electricity to certain parts located within the copper wire with pieces made with this combination method is done by melting fusion.
By electrofusion welding method just from the same raw material pipes can be made.
The area to be welded by electrofusion welding method needs to be protected from bad weather conditions.
The temperature of the media sources to do with electrofusion welding method should be between 5 ° -50 °.
The temperature of the media sources to do with electrofusion welding method should be between 5 ° -50 °.

Electro Monitoring Required Steps

Before the mouth of the pipe welding process should be checked whether their angle is with its axis. If there’s no angle then it should be discontinued and should allow for right angles to get its axis. Electrofusion sleeve pe pipe surface to be installed must be checked. Source size should in general be up to half the length of the sleeve. Marked by cutting scraping apparatus should be written so that no oxidation should be required.  After scraping is performed it should not be touched and should definitely be protected from adverse weather conditions. If deemed necessary with the clamp attached to the sleeve pipe system is fixed.

Electrofusion cables on welding machine attached to the socket on the sleeve. Barcode value is entered through the machine on the sleeve. Then the welding process is performed by giving tension to the ends of the sleeve socket. It is expected implementation of the cooling process for removing a clamp. Polyethylene pipe laying operations in the more important issue is the quality of the pipe work. Welder’s certificate and references, which will be especially important with the welding process still need to be made in the audit.

Advantages of the electro-fusion welding for PE Pipes:

It is possible to direct the output from the main pipe using the technique.
Repair of the pipe is easy.
It can be applied even in very tight spaces.
It does not require much excavation and filling.

2) Resources

Butt Welding; Polyethylene pipes and fittings for joining is one of the most widely used method of joining. The two ends of the pipes to be welded taken by heating under pressure is performed by pushing towards each other.
Get up to 1200 mm diameter pipes with welding assembly methods can be boiled. Butt welding bonding method is performed in accordance with DVS 2207 standards.
a) Sources of Heat: Heater plate temperature should be between 200-220 ° C and temperature monitoring should be carried out continuously. Table containing the relationship between the welding heat and wall thickness are specified below:
b) Heat Pressure:
Surface of the pipe for the heating process should be based on the heater plate. Heating pressure P ← 0.02 N / MMC kept level.
c) Heating time: the formula for calculating the heating time is as follows;
Pipe thickness x 10 sec.
d) The lip Height: Heater plate and called the wall thickness resulting from aging pipes taken between surfaces. H = 0.55 mm + (0.1 x e) is calculated in mm. E: pipe wall thickness (Table 1/2)
e) Switching time: The time period between the surface heating pipe with the end be removed from the plate heater is the last time. During this operation must be seen strictly pipe surface must not be contaminated and damaged. (Table 4.1)
f) Assembly time: after the end of the replacement process is combined with the surface of the tube to be welded in a time zone close to zero. (Table 1.5)
g) Under Pressure Cooling Time: Merge same value under time pressure should be kept cool. (Table 1/5)

Necessary Implementation of Welding Processes of the PE pipe

* Get protection from impacts of the adverse weather conditions of the environment.
* Get medium to be welded but it must be under 5’C’n.
* Get trained welder which will make the welding process and must be able to provide good references.
* Get to be used while welding machine must be certified.
* Get thickness of the pipe to be welded must be equal. And if it  equal. Then the difference should not exceed 10%.

The Machinery and Equipment Used in Butt Welding Process:

Get 4 machines used in the welding process and equipment which are;
* Cutting Unit:Components used to make pipes surface smooth and flat This machine is the welding process as a result of the transaction would adversely affect the cleared dirt and oxide layer.
* Clamps: Get in to do the welding equipment that keeps the pipe is fixed. Get set for each source alone should be done differently in the pipe.
* Heating Unit: it faces the pipe is used in heating equipment consisting of those resistances.
* Hydraulic Unit: Shaving, heating, allowing the pressure required in the assembly process, I’m axle clamps that move horizontally.

Output Advantages of Resources

• Click Merge does not require special add the track.
• Received Source elbow with a “T” can be easily produced additional items such as crosses.
• Welding machine is produced in our country, it is easy to Supply.
• Additional parts are cheaper than the other pipe.
• 3 applications can be easily and safely to large wall thickness from mm.
• Healthy and safe procedure.
• The strength of the weld zones obtained when a welding connection is made to the Technical would be equivalent to the strength of the main pipe.

Socket Supply

Fitting inner surface of the outer pipe surface after introduction into the fitting until the fusion temperature without waiting to get heated.
The steps required to make the socket welding;
• Pipe ends are cut perpendicular
• End part and the part to be welded fitting cleared
• heated with parts respectively, are combined and allowed to cool.

4) Flange Connection

This adapter plugs welded to the tubular connection. Main flange should be supported by certain pressure from the rear flange . Otherwise, it is inevitable to leak. Print flanges must be from the iron and steel material Is less than 3 mm diameter flange bolts from the bolt holes. There must be between the nut and the pressure flange nut.

HDPE PIPE WEIGHT TABLE TABLE

Click for HDPE pipe weight table