DOTORi

PB Fittings

  • Payment
    T/T
  • MOQ
    Negotiable
  • Country of sale
    World Wide
  • Response Level
      41% ~ 50%
  • Supplier Level
      More than 10 billion (KRW)
  • Transaction Level
      less than 5
  • PRICE
    • FOB

      Depend on quantity

ITEM SPECIFICS

  • Brand
    DOTORi
  • origin
    Republic of Korea
  • Size(Capacity)
    ASTM( 1/2" - 1 1/4"), ISO(16mm - 32mm)
Features of PB Products
PB Pipe
 
PB Pipe is made of high quality material called Polybutylene. 
PB pipe is known to be flexible, economical, and corrosion-free and it is best suitable and applicable for hot and cold water distribution system and underfloor heating system.
 
General Characteristic
Endurance
 
The Highest Strength
Polybutylene as a raw material of PB pipe is considered the best product in petrochemistry field.
 
Under the condition with high temperature, Aikang Greentech PB Plumbing System has no deterioration in quality and no change on creep.
Nontoxic Product
 
No Noise
Polybutylene is nontoxic material verified by NSF. Therefore, it can be used for waterworks.
 
Aikang Greentech PB Plumbing System is noise-free from Water Hammer, water pressure fluctuation, and increased temperature.
Corrosion Proof
 
Anti-invasion of Microorganism
Polybutylene is strong for corrosion proof. It is not affected by electrolytes and so, it is used for plumbing materials of spring water on overseas countries.
 
Aikang Greentech PB system is strong against chemical reaction. It also prevents bacteria from invading into the plumbing system.
Flexibility & Light Weight
 
Freezing and Heat Resistance
Aikang Greentech PB Plumbing system is lighter and more flexible than other plumbing system. So it can be carried and installed in a narrow space.
 
Because of its high elasticity, Aikang Greentech PB plumbing system protects itself against freezing and is resistant to heat.
Resistance to Impact
 
Economical Efficiency
Aikang Greentech PB Plumbing System is relatively more resistant to impact than any other plumbing system due to its high elasticity.
 
When you use Aikang Greentech pipes, you can save the money by low labor cost, short construction period, long durability and low defect rate.
Easy to Work
 
Thermal Insulation
Aikang Greentech PB piping method has been developed as a Push-Fit system, which does not require tools and technology, and is more effective in shortening construction time than other piping systems.
 
Aikang Greentech PB pipe has excellent thermal insulation properties because it has a very low thermal conductivity of 1/250 of steel pipe and 1/1700 of copper pipe. So It is suitable for water supply, hot water supply and heating piping.
360° rotation possible
 
Electrical insulation
Aikang Greentech PB system can be rotated 360° after connecting pipes and fittings, making it easy to install even in tight spaces where piping is difficult.
 
Aikang Greentech PB piping material has excellent electrical insulation and unlike metal piping material, there is no worry of transition corrosion.
 
General Applications
1. Pipe for cold and hot water supply
Aikang Greentech System is non-toxic, odorless, and highly durable material that is recognized world wide.
2. Under-floor Heating System
Aikang Greentech System is best for fan-coil unit of building and under-floor heating system due to its high heat insulation and high durability.
3. Industrial Pipe
Since Aikang Greentech System has a high resistance to chemical attack, it is well suited for use in a chemical factory, a food manufacturing plant, and a hospital.
4. Agriculture and Horticulture Pipe
Because of its high chemical resistance, flexibility, and protection against sun, Aikang Greentech System can be used in irrigation canal, a green sprinkler, under -ground heating pipe of a farm and spraying chemical.
5. Snow-Removing Pipe(Road Heating)
Because of PB pipe’s durability, Aikang Greentech Pipe can be used for snow removal on the road, parking zone and stadium.
6. Hot Spring Pipe
Aikang Greentech Pipe has excellent pressure resistance to hot water. Also corrosion or scale does not occur which is excellent source for hot spring pipe.
7. Fire Sprinkler Pipe
As a non-metal pipe, it is passed firstly UL standard. We’ve got the FM approval and now it is used in world wide as a sprinkler material.
8. Pipe for Solar Heating System
PB pipe is used for hot water supply and heating at solar house.
 
Structure of PB Fitting
1. Retaining Cap
It’s a high graded nylon. It is totally safe and highly reliable. The cap is factory fitted part to obtain the right torque and requires no further tightening. If cap become loose, it can be easily tightened using hands without any tools.
 
2. O-Ring
O-ring is strong against high or low temperatures. We have a certificate of WRC test for long durability and hygiene property.
 
3. Spacer Washer
It separates the O-ring seal from the grab ring and is designed to reduce insertion force.
 
4. Grab Ring
It is manufactured using stainless steel 316L which has excellent corrosion resistance and creep strength under high temperature.
 
PB Pipe Specification and Tolerance(KS Standard 0.3mm)
According to the standard of Push-Fit fittings, our product quality is controlled within the tolerance 0.2mm. The system is completed by the assembly of Pipe, Sleeve, Cap, O-ring, Washer, Grab ring and Fitting body, and then the function can be worked perfectly as a plumbing material.

Nominal
(mm)

Outer Diameter(mm)

Wall Thickness(mm)

Standard
Measure

Toler-
ance

Standard
Measure

Toler-
ance

12(3/8“)

12.6~12.8

±0.1

1.6~1.8

±0.1

15(1/2“)

15.8~16.0

±0.1

1.6~1.8

±0.1

22(3/4“)

22.1~22.3

±0.1

2.03~2.23

±0.1

28

27.9~28.1

±0.1

2.6~2.8

±0.1

35(11/4“)

34.8~35.0

±0.1

3.18~3.43

±0.1

▲ KS Standard in 1998 (ASTM Standard)

Nominal
(mm)

Outer Diameter(mm)

Wall Thickness(mm)

Standard
Measure

Toler-
ance

Standard
Measure

Toler-
ance

12

12.05~12.25

±0.1

1.3~1.5

±0.1

16

16.05~16.25

±0.1

1.5~1.7

±0.1

20

20.05~20.25

±0.1

1.9~2.1

±0.1

25

25.05~25.25

±0.1

2.3~2.5

±0.1

32

32.05~32.25

±0.1

2.9~3.1

±0.1

▲ KS Standard in 2003 (ISO Standard)
 
Normal Pressure of PB Pipes according to Temperature(KS M 3363)
     ▲ Permitted pressure per each temperature for 50
         years use based on DIN standard in Germany
 
Basic Properties of Polybutylene
Properties
Unit
Test Method
Value
Physical
Properties
Density
g/㎤
ASTM D1505
0.937
Hardness
D scale
ASTM D2240
D60
Absorption
㎎/㎠
JIS K7209
below 0.01
Mechanical
Properties
Yield Strength
㎏f/㎠
ASTM D638
170
Tensile Strength
㎏f/㎠
ASTM D638
340
Tensile Strain
%
-
250
Modulus of Elasticity
㎏f/㎠
ASTM D638
2,700
Poisson's Ratio
-
-
0.38
Impact Strength
㎏f/㎠
JIS K7110
45
Thermal
Properties
Coefficient of Linear Expansion
℃-1
ASTM D696
1.3 X 10-4
Specific Heat
cal/g℃
-
0.5
Thermal Conductivity
kcal/m‧hr‧℃
ASTM C177
0.33
Melting Point
DTA
124~126
Brittle Temperature
JIS K7216
-18
Electrical
Properties
Volume Resistivity
Ω㎝
ASTM D257
above 1017
Withstand Voltage
㎸/㎜
ASTM D149
38
 
Chemical Structure of Polybutylene
PB resin is a high molecular polymer made by synthesizing 1-butene and is a polymer of polyolefin series with high crystallinity.
  ▲ It shows the structural formula of polyolefin compounds for understanding the characteristics of resins.
 
Comparison of Physical Properties of Piping Materials

◈ Thermal Conductivity
The thermal conductivity for PB pipe is lower than metal pipe. Therefore, Therefore, it can supply hot water more efficiently than metal pipe. However, in case of long-distance piping or to minimize heat loss, use a thermal insulation material.

Materials
Thermal conductivity
(kcal/m‧hr‧℃)
The rate
when PB Pipe=1
PB
0.33
1
Stainless Steel
14
42
Steel
50
152
Aluminum
180
545
Copper
340
1,030

◈ Coefficient of Linear Expansion
The coefficient of linear expansion of PB pipe is very low, about 1/60 of that of metal pipe. So, when the PB pipe is buried in concrete, the friction of the concrete can sufficiently hold the extension of the pipe. For this reason, it is almost not necessary to consider the expansion and contraction of the pipe by heat during PB piping work.

Materials 
Coefficient of
expansion(℃-1)
Tensile Modulus
(㎏f/㎠)
PB
1.3~1.5×10-4
4.0×103
Stainless Steel
0.09~0.1×10-4
2.8×106
Steel
0.1~0.11×10-4
2.1×106
Copper
0.17~0.18×10-4
1.1×106

◈ Properties against Freeze and Fusion
The right graph shows the result of repeated freezing and melting test on the PB pipe. For the test method, the test pipe was filled with water, and freezing and melting were repeated at a cycle of -20 ℃ for 16 hours ↔ 23 ℃ for 8 hours. As a result of the test, the PB pipe is not frozen to burst. This indicates that the PB pipe is flexible enough to absorb the volume expansion of the water by freezing.

 
KS Specification
 
How to install Push-Fit system

1. Cutting the Pipe

Mark the spot where you want to cut with pen. Then, cut the pipe smoothly and clearly in right angle by using the pipe cutter.

2. Inserting the support sleeve

Support sleeve, an integral part of the joint, needs to be fully inserted inside the pipe before connecting the pipe into the PB or brass fitting.

3. Use of Lubricant

When you use the lubricant for PB pipe and fitting, you can insert the pipe more easily into the fitting.

4. Inserting the pipe into fitting

The pipe should be inserted into the fitting to full socket depth such that the insertion depth mark aligns with the outer end of the cap on fitting.

5. Avoid disassembling the fitting

PB pipe should not be removed from the fitting by removing the cap. If you need to disjoint it, never use the same grab ring twice and must follow the jointing procedure.

6. Avoid re-jointing

Cap is factory fitted part to obtain the right torque, requires no further tightening. If cap becomes loose, it can be easily tightened by hand without any tools.

7. Avoid connection on bent position

PB pipe must not be bent after insertion. If bent, it could cause leakage in the pipe or damage the grab ring.

8. Carrying and storing the pipe

PB pipe is soft. Therefore, do not scratch, or place them near the sunlight and fire. Please handle with care.

 
Unsuitable Installation and Countermeasures

Unsuitable
Type

Occurrences

Causes and Countermeasures

Leakages

Leakage occurs due to scratches on the surface of the pipe.(Small amount of leakage occurs, leakage and stoppage are repeated)

• O-rings fail to maintain airtightness due to rough handling or foreign objects (sands, etc.) stuck on the surfaces.

- Attention should be paid not to cause damages to pipes while handling.

Foreign objects are stuck between the O-ring and the surface of the pipe.

• With lubricants applied on the O-ring, leakages occur due to foreign objects like a hair stuck on the surfaces

- Clean the surrounding areas and check for any foreign objects before starting working.

O-ring is torn.

• Using saws or any other tools than exclusive cutters to cut pipes can result in sharp edges of pipes, leading to damages to the O-ring.

- The exclusive cutter should be used while cutting the pipe.

• O-ring can be heavily pressed and torn during the de-plumbing works of connections.

- Attention should be paid during reassembly.

The pipe joined to the fitting is bent at a sharp angle.

• Leakages can occur in the O-ring when the pipe is directly bent from the fitting.

- Avoid bending of pipe during piping work.

Separation of
the Pipe

Eccentricity generated in the grab ring.

• The grab ring comes off due to reuses.

- Once used, a grab ring should not be reused.

• Coming off when unscrewing the cap and inserting the pipe.

- The cap should be manually screwed to insert the pipe.

• Separation due to de-plumbing

- Connect the cap after driving in the parts first

No trace of the insertion of the grab ring

• Short of a 2-step insertion, the pipe is inserted to the O-ring only.

- Take advantage of the insertion mark.

Insertion of the support sleeve failed

• It failed to support the pipe and came off.

- Ensure it is properly inserted.

Bursting or
Rupture of
the pipe

White stretched marks are seen on the ruptured area

• Steam generated by the overheating of the boiler causes rupture.(melting point- 126℃)

- Check the boiler and instant heater.(Without clearing the root causes, it can reoccur.)

A lengthy rupture occurred on the pipe as if it were cut by a knife.

• It occurs due to the water pressure, when a shock is given to the pipe pressed by water.

- Pay close attention to the external shocks when conducting water pressure examination after plumbing.

• Pipes can be ruptured by shocks and excessive pressure during the winter season.(Check on freezing and bursting.)

- Handle pipes with caution as they become vulnerable to shocks in low temperatures.

Pipes are melted and ruptured

• Pipes can be melted and ruptured by arc welding sparks or cigarettes.

- Made of chemicals, pipes are very weak to direct heat, calling for special attention during conducting other works.

Pipes are swollen and ruptured

• Pipes are ruptured due to water hammering generated by hurried handling at the water pressure motor and the malfunctioning of the gauge.

- Please ensure the gauge is exactly at 0 point, and refrain from using those motors that can momentarily generate water hammering.(use high-capacity pressure gauge.)

• When contacted with petrochemical materials(gasoline, kerosene), the PB pipes can get hardened(physical property changed) or corroded(ruptured).

- Please ensure no petrochemical materials get in touch with pipes before/after plumbing work.

Cracks generated in and out of the pipes

• When contacted with iron rust, the PB pipes can get cracked due to radicals of the metal materials.

- Please make sure the PB plumbing materials do not directly contact with the rust generating materials.(ex: binding wire) during plumbing works.

Erosion of pipes and fittings

• PB piping material erosion occurs when it comes into contact with salt(NaCl).

- Be careful not to come into direct contact with water containing salt. (eg sea water)

PAYMENTS DETAILS

This supplier supports payments for offline orders
  • Telegraphic Transfer : T/T
Contact Payment manager
  • Name : Manager
  • Tel : 82-0220606310
  • Email : shy3288@gmail.com

SHIPPING

Shipping from : Republic of Korea
  • 16-11 Abangni 3-gil, Gwangmyeong-si, Gyeonggi-do (14335)
Can't find a valid Shipping method for supplier account. Please contact the pertaining representative for detailed information.
Aikang Greentech Co., Ltd.

Aikang Greentech Co., Ltd.

akgreentech.dothome.co.kr Seller_Mail
  • The person in charge

    Shin Ho Yong
  • Telephone

    82-0220606310
  • Fax

    82-0220606330
  • Address

    16-11 Abangni 3-gil, Gwangmyeong-si, Gyeonggi-do (14335)
Introduction
Aikang Greentech Co., Ltd. was founded in 2002 and is a leading manufacturer specialized in producing "PB Pipes and Fittings" for hot and cold water supply and floor heating in Korea. The PB pipes are made of polybutylene, a high molecular polymer, and are considered to be the best products in the petrochemical field. Our plumbing system for connecting PB pipes is a push-fit system, so it is very convenient to work and can reduce working time dramatically. And we have developed "Pipe in Pipe system" for exposed piping system. With our PnP system, you can prevent water from leaking in the middle of the pipe and significantly reduce construction costs.
  • Business Type :
    Manufacturer
  • Main Product :
    PB Pipes, PB Fittings
  • Established :
    04/01/2002
  • Total Annual Revenue :
    More than 10 billion (KRW)
  • Total Employees :
    11~50 people

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