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ECO Clean Tank II

Place of Origin: Hebei

Company Profile

Location: Shijiazhuang, Hebei, China (Mainland)
Business Type: Manufacturer

Product Description

ECO CLEAN TANK II
(Introduction of new product)

Company Overview

Mission
To create values accepted by customer's mind with differentiated molding and manufacturing technology

Vision
To grow as a leading Total Solution Company holding molding and manufacturing technology achieving sales target of USD 300Million in 2020.

Company Overview

Company Name

DOHA Industry Co., Ltd.

Established

1999.3.2

Representative

Kim Hong-gyu

Sales Revenue

USD 80million(2012)

Head Office

134 road, (#1183 Songhyon-ri) 81, Gomo-ro, Jinrae-myun, Gimhae-si, Gyeongsangnam-do, Korea

Factory

Land area: 35,460m2, Floor space: 11,424m2

Main Products

Heavy machinery parts, automobiles, agricultural machinery, etc., Composite Products for aircrafts andblades, super precision press processed goods for LCD (LED), semi-conductors and building materials

Market Trend of Water Tank

Market Trend
SMC water tank is used as a main material and only products sufficiently verified for its good hygiene and durability are consistently demanded in popularity.


Domestic Market Trend
SMC and STS are used as main materials and M/S of SMC water tank is also increasing in domestic market with its sufficiently verified durability and hygienic quality over competition.  


Products in Domestic Market

Type

Existing STS Water Tank

Existing SMC Water Tank

ECO CLEAN TANK II

Product




Reinforcement

INTERNAL TYPE

INTERNAL TYPE

EXTERNAL TYPE

Appearance

SQUARE SHAPE

SQUARE SHAPE

ROUND SHAPE IN EACH CORNER

Main material

STS304 Panel

SMC Panel

SMC Panel

Installing

Welding

Bolt Fastening

Bolt Fastening

Hygiene
(Main Body)

Vulnerable to corrosion as STS panels are assembled by welding

Strong against corrosion as reinforced plastic material is used

Strong against corrosion as reinforced plastic material is used

Hygiene
(Reinforced Material)

Vulnerable to corrosion in STS panels and interior reinforced materials by Chlorine gas.

Vulnerable to corrosion in interior reinforced materials by chlorine gas.

Corrosion problem has been completely improved with exterior reinforcement structure (1~4mH).

Water tightness

No problem in water leak

Water leak may be frequently occurred in the corners

No problem in water leak due to the rounded corner structure

Product Information

Purpose of developing ECO-Clean Tank II
To develop and ideal water tank improved the problems found in the traditional products in a hygiene-related area that is the fundamental function in the water tank.


Major features of ECO-Clean Tank II


Comparison & effect of reinforcement structure between interior and exterior type

Type

Existing product(Internal reinforced)

ECO Clean II(External reinforced)

Internal


Corrosion problem caused by chlorine gas


No internal reinforcement material is used → Corrosion problem solved

External


Cross sectional area of external reinforcement: 2.85cm2


Cross sectional area of external reinforcement: 45cm2(15.8times)

Effect

Rust prevention, Solution to interference problem among reinforcement materials during cleaning work

Comparison & effect of reinforcement structure between interior and exterior type

Type

Existing product(Internal reinforced)

ECO Clean II(External reinforced)

Internal


Rust developed on reinforcement materials


Integrated panel for corner → Corrosion problem cleared

External


CStructure to concentrate stress on the corners → Water Leak


Structure to disperse stress concentrated on the corners → Protection of water leak

Effect

Solved weakness found in the structure with square corners(rust and water leak)

Technology of ECO Clean Tank II

Technology applied to product and certification

Certification
Type

Certificate
(Registration) No.

Title of technology
(patent)

Duration Validity
/Registered Date

Obtained from

Remarks

Patent

10-1176145

Prefabricated water tank with reinforced exterior

Registered:2012.08.16

Commissioner of Korean Intellectual Property office

Registered

Patent

10-1050717

Prefabricated water tank with substructure reinforced

Registered :2011.07.14

Commissioner of Korean Intellectual Property office

Registered

ISO9001
Certificate

QMS-3674

Item: SMC Water tank and others

Registered :2012.01.30
Effective until:2015.01.29

NSF-ISR


KC Certificate

KCW-2013-0113

Water Tank ISO9001

Registered :2013.04.18

Korea Water and Wastewater Works Association


Performance Evaluation
Test results conducted by qualified agency

Type

Test Item

Unit

KS Standard

Test Data

Results

Hygiene

Migration Test(Turbidity)

Degree

2 or less

Less than 0.5

O.K

Migration Test (Consumption of Potassium permanganate)

Mg/L

1.0 or less

0.3

O.K

Migration Test (Smell and Taste)

-

No smell and taste to be detected

Not detected

O.K

Migration Test (Chromaticity)

Degree

5 or less

1 or less

O.K

Migration Test (Reduction of residual CHLORINE)

Mg/L

0.2 or less

0.0

O.K

Migration Test (ph 20°C)

-

5.8~8.6

7.2

O.K

Migration Test (Phenol)

Mg/L

0.005 or less

Not detected

O.K

Migration Test (As heavy metal/Pb)

Mg/L

0.005 or less

Not detected

O.K

Migration Test (Evaporation residue)

Mg/L

25 or less

2

O.K

Mechanical Strength

Tensile strength

Mpa

60 or more

114

O.K

Flexural strength

Mpa

80 or more

250

O.K

Flexural coefficient ofelasticity

Mpa

6000 or more

14777

O.K

Content of glass fiber

%

25 or more

27.6

O.K

barco; hardness

-

30 or more

73

O.K

Hygiene

Migration Test(Turbidity)

Degree

2 or less

Less than 0.5

O.K

Migration Test (Consumption of Potassium permanganate)

Mg/L

1.0 or less

0.3

O.K

Migration Test (Smell and Taste)

-

No smell and taste to be detected

Not detected

O.K

Migration Test (Chromaticity)

Degree

5 or less

1 or less

O.K

Migration Test (Reduction of residual CHLORINE)

Mg/L

0.2 or less

0.0

O.K

Theoreical Verification on Structural Safety
(FEM Stress Analysis - Reinforced Exterior Structure)


Type

MOMENT MAX
(Kgf.cm)

ØModulus
of Section(cm3)

Allowable Stress
(Kgf/cm2)

Stress of member
(Kgf/cm2)

Results

External reinforcement frame

351.834

146.87

2395.55

2400

O.K

Base frame(Principal member)

2634.4

61.02

43.17

2400

O.K

Ceiling rods

551.88

1.58

349.29

2400

O.K

Note)1. MOMENT MAX: Actually Occurred MOMENT x 1.2
2. Modulus of Section: Actual modulus of section x 0.9


Maximum stress value in square shaped corner

Maximum stress value in round corner

Structural safety has been improved by 2.7 times

115Kgf/cm2

42Kgf/cm2

Actual verification of structural safety(Field Test)

TEST Results: Maximum deformation when filled with water 18.98mm, No water leak found.→ Structural Safety is O.K


Conclusions

  • Water is the source of life and the most important resource used as the basis of all food ingredients.

  • We tried our best to develop the most ideal water tank, in which such valuable water is stored, from the viewpoint of a food container rather than simple machine equipment.

  • We hope we can contribute to the supply of fresh and clean water to meet the needs of society by widely distributing our eco-clean water tanks in these days when the importance of drinking water management is greatly emerged.

  • Thank you very much


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