iPVC Water Pipe

  • Innovative PVC water pipe to provide quality,
    durable water pipes to supply clean and safe drinking water for
    the benefit of mankind’s health and wellbeing

Application
  • • SEISMIC
  • • POTABLE
  • • SEWER
  • • RECLAIM

Introduction Video of iPVC Water Pipe

Development of iPVC Water Pipe

Development of iPVC Water Pipe verified 220 year lifespan 상수도관 3대 문제점 해결 Development of iPVC Water Pipe verified 220 year lifespan 상수도관 3대 문제점 해결

Performance of iPVC Water Pipe

Performance of iPVC Water Pipe
Test Criteria iPVC
Water Pipe
PVC Water Pipe
International Standard
(ISO4422)
Korean Industrial Standard
(KS M 3401)
Tensile Strength (MPa) 53 45 43
Drop Weight Impact Strength 3m (9kg) 1.6m (1kg) 1.5m (9kg)
* Long term Hydrostatic Pressure (hr) 30 1 1

* Conditions of Hydrostatic Pressure Test : Temp. 20°C, Tangential Stress 42.0Mpa, O.D 4’’(100mm)

Performance Test with 30 Ton Excavator

No damage after test of 4 times driving back and forth No damage after test of 4 times driving back and forth

Zero damage nor weakening of the pipe even under extreme duress.

Test of 4 times driving back and forth

Crush Resistant

Impact Test

Impact & Tensile strength (Temp. 14F)

Trench Demonstration

Impact & Tensile strength (Hydrostatic Pressure 75 psi, Temp. 14F)

Flexibility and Bending Test

Bending & Deflection (Hydrostatic Pressure 75 psi, Temp. 14F)

Certification of National Sanitation Foundation(NSF)

Certification of National Sanitation Foundation(NSF)
  • iPVC Pipe is NSF/ANSI 61 Certified. What does this certification mean?

  • NSF/ANSI 61 is intended to cover specific materials or products that come into contact with drinking water, drinking water treatment chemicals or both. The standard is routinely monitored and updated by a joint committee comprised of equal parts public health experts, end users and industry members.

Install iPVC Water Pipe
for all the pipeline in USAG Humphreys

us Army corps of Engineers
  • - Size : 14,650,000m2
  • - USACE FED Approved
  • - iPVC Water Pipe including 12 Inch was installed as main & full-spec pipeline
    ...in USAG Humphreys (Total 150 km)
  • - Currently under construction in USAC Walker, USAC Carroll, CNFK Pohang,
    ...and Kunsan Air Base
  • USAG Humphreys 1
  • USAG Humphreys 3
  • USAG Humphreys 2
  • USAG Humphreys 4

Announcement of New International Standard
in ISO General Assembly

us Army corps of Engineers
  • - International Organization for Standardization
  • Approximately 150 professionals attended from the U.S., Germany, and ~50 other nations
  • Distributed to 163 member nationals globally
AGNES HyeJung LEE, Executive VP, PPI America Inc.

Announcement of new international standards for iPVC water pipes
- AGNES HyeJung LEE, Executive VP, PPI America Inc.

2014 ISO General Assembly

Announcement of new international standards for iPVC water pipes
- 2014 ISO General Assembly

WRF verified 220 year lifespan of iPVC Water Pipe

WRF verified 220 year lifespan of iPVC Water Pipe
WRF verified 220 year lifespan of iPVC Water Pipe
220 year lifespan verified by WRF through 2 years of test.
(Test suspended after verifying 220 years lifespan through the 4 million cycle of fatigue test)

Major Test Results of iPVC Water Pipe

Tensile Test Tensile Test
Drop Weight Impact Test Drop Weight Impact Test
Hydrostatic Burst Test Hydrostatic Burst Test
Stiffness Test Stiffness Test
Fatigue Test Fatigue Test
Bedding Test Bedding Test

Excellent properties of iPVC

Compared with international standards

TEST MINIMUM WRF
REQUIREMENT
iPVC RESULTS* ISO REMARKS
Tensile Strength
(ASTM D638)
7,000 psi
(48.3 MPa)
7,930 psi
(54.7 MPa)
6,527 psi
(45 MPa)
About 13% increase
in Strength
Modulus of Elasticity
(ASTM D638)
400,000 psi
(2,758 MPa)
461,000 psi
(3,179 MPa)
N/A 15% increase in
Modulus of Elasticity
Pipe Stiffness
@ 95% OD
(ASTM D 2412)
364 psi 479 psi N/A 32% increase in the
stiffness
Free Fall Impact Test
@ 73 °F
(ASTM D 2444)
100 foot-pounds
(Tup B)
No failure at
1,200 foot-
pounds (TUP A)
N/A 12 times more
resilient
Short burst Test
(ASTM D 1599)
755 psi
(60-70 sec to fail)
1,033 psi
(Avg 123 sec to fail)
580 psi
(60 sec to PASS)
37% more than
WRF

Tested with WRF C 900 iPVC pipe 8 inch DR 18 (235 psi)
Sources *Tested by CUIRE and Microbac Lab under the guidance of AW and funding from the Water Research Foundation

Partnership America's No.1 Water Utility Corporation

AMERICAN WATER
  • 마크 스트라우트 부사장/아메리칸 워터 이혜정 법인장/PPI 파이프 미국 법인

    American Water, the largest water corporation that provides services to approximately 14 million people in 46 U.S. states partnered with PPI Pipe to install our revolutionary iPVC C900 pipe into their water systems.

  • 데이브 휴스 선임연구원/아메리칸 워터

    With continued support, American Water has also agreed to Co-Research the iPVC Water Fitting to develop the ultimate non-corrosive water pipe system in the world.

    During AWWA ACE Annual Conferences from 2016-2019, David Hughes, American Water’s Senior Researcher announced the test results from the Water Research Foundation (WRF) that PPI Pipe’s iPVC was (SIGNIFCANTLY BETTER THAN CONVENTIONAL C900).

• Major References in the US

St. Louis, MO

St. Louis, MO
Area with Frequent Heavy Flooding
& Corrosive Soil

Manville, NJ

Manville, NJ
Urban Road
with Heavy Traffic

Long Branch, NJ

Long Branch, NJ
Area
with Saline Soil

The Miracle of Long Branch

  • iPVC Water pipe was installed in Long Branch, NJ where 11 previous failed installations occurred in corrosive soil due to saturation of saline.
  • Long Branch, NJ 1
  • Long Branch, NJ 2

Long Branch, NJ
Area with Saline Soil

Cornell University 2018 Study on iPVC Pipe for Seismic Applications

CORNELL
  • A 2 years of joint research with Cornell University, a leading authority on earthquake resistance performance evaluation.
미국 코넬대학교
  • Successful testing resulting in the conclusion that the iPVC water pipe would have survived 95% of the World’s Historical Earthquakes.
the Full-Scale Fault Rupture test 1
the Full-Scale Fault Rupture test 2

Participants applauded the performance of iPVC Water Pipe
after completing the Full-Scale Fault Rupture test.

코넬대 역대 시험 중 최대굽힘각도 52.5도에서 유일하게 파괴 및 누수가 없음

At the maximum bending angle of 52.5 degrees of deflection, the iPVC bell and spigot had zero leaks nor damage. This is the first and only pipe to have achieved maximum deflection in the history of Cornell University’s testing facility. (Please note there was an external restraint joint used)

미국 Cornell University T.D O’Rourke 교수가 성공적인 테스트를 축하하는 모습

Professor Thomas D. O’Rourke, Associate Director of the Cornell Program in Infrastructure Policy, congratulates PPI Pipe’s CEO and Vice-President on all the successful testing.

iPVC Seismic Water Pipe Installation in Oakland, CA

EBMUD
  • East Bay Municipal Utility District, colloquially referred to as "East Bay Mud", is a public utility district which provides water and sewage treatment services for an area of approximately 331 square miles. EBMUD sits between two of the largest fault lines in the West Coast of the US, San Andreas and Hayward Fault Lines respectively. Due to this, they have seismic activity on a daily basis, which led to constant damage to their cast iron pipes.

  • In 2018, EBMUD decided to replace all of their water lines with seismic resistant pipes in which the iPVC pipe was the only PVC pipe selected. To date, there has been over 40 miles of iPVC 6-12 inch pipe installed.
  • There was frequent damage to cast iron pipelines from earthquakes as the city is located in the Pacific Seismic Zone.
  • The iPVC Seismic Water Pipes were installed and will be used without replacement for the next 100 year.
  • 65km of 6-12 inch (150~300mm) iPVC Water Pipes have been installed since 2018.
    (As of April 2021, total 65km installed)
EBMUD1
EBMUD2

Oakland, CA
Earthquake-Prone Area, As of 2021, total 65km installed

EBMUD2

Omaha, NE
Open Ground Corrosive soils

EBMUD2

Major References of iPVC in the USA

Acquired Disaster Safety Products Certification from
Korean Ministry of the Interior and Safety & K-Innovative
Product Certification from the Korean Ministry of Environment

∙ 내구성 및 내진 성능 인정, 파이프로는 유일하게 재난안전제품 인증 획득 ∙ 내구성 및 내진 성능 인정, 파이프로는 유일하게 재난안전제품 인증 획득
∙ 미생물 증식억제 녹물 방지 상수도관으로 혁신제품 인증 획득 ∙ 미생물 증식억제 녹물 방지 상수도관으로 혁신제품 인증 획득

Selected by the Korean Ministry of Environment as
the corporation with the most outstanding performance

Cho, Myung Rae, Minister of Environment, visited PPI PIPE HQ

Cho, Myung Rae, Minister of Environment, visited PPI PIPE HQ

Applied iPVC Water Pipe to project of LH and K water

LH
Project of pipeline under railroad track (LH)
Installed 630 mm iPVC Water Pipe
LH
Project of pipeline under railroad track (LH)
Installed 630 mm iPVC Water Pipe
  • project of LH and K water 1
  • project of LH and K water 2
  • project of LH and K water 3
  • project of LH and K water 4
수자원공사
Project of Gumi Test Bed (K Water)
Installed 400mm iPVC Water Pipe
수자원공사
Project of Gumi Test Bed (K Water)
Installed 400mm iPVC Water Pipe
  • Installed 400mm iPVC Water Pipe  1
  • Installed 400mm iPVC Water Pipe  2

Major References of iPVC Plant Pipe
(Chemical, Energy, Semi-Conduct, Shipbuilding, Steel)

• PosLx Project (POSCO, Total 9.1 km)

PosLx Project (POSCO, Total 9.1 km) 1
PosLx Project (POSCO, Total 9.1 km) 2
PosLx Project (POSCO, Total 9.1 km) 3

• Major Reference in Korea

Chemical Wastewater Piping, Yeosu Plant, LG Chem Chemical Wastewater Piping, Yeosu Plant, LG Chem

Chemical Wastewater Piping, Yeosu Plant, LG Chem

Freshwater Piping, Pohang Steel Mill, POSCO Freshwater Piping, Pohang Steel Mill, POSCO

Freshwater Piping, Pohang Steel Mill, POSCO

Chemical Wastewater Pipe, Asan Plant, Samsung Display

Chemical Wastewater Pipe, Asan Plant, Samsung Display

Wastewater Piping, Yeosu Plant, Kolon Water & Energy

Wastewater Piping, Yeosu Plant, Kolon Water & Energy

Wastewater line, Yangsan Plant, Coca-Cola

Wastewater line, Yangsan Plant, Coca-Cola

Spain chooses PPI Pipe iPVC technology to replace failing PVCO extrusion processing.

  • iPVC pipe was inversly exported to Europe in 90 years since PVC pipes were invented in Germany in 1932
GPF
  • ∙ The Fifth placed in Europe, The First placed in Spain
PPI PIPE's CEO and President, Employees visited GPF HQ

PPI PIPE's CEO and President, Employees visited GPF HQ

Pipe

3규격표 모식도 3규격표 모식도 3규격표 모식도

AWWA C900

Unit : mm

PIPE SIZE
in
AVG. O.D
in (mm)
NOM. I.D
in (mm)
MIN. T.
in (mm)
APPROX. E
in (mm)
APPROX. D
in (mm)
APPROX.  WGT
lbs/ft (kg/m)
PRESSURE CLASS 165 psi (DR25)
4 4.80 (121.90) 4.40 (111.55) 0.192 (4.88) 5.75 (146.05) 6.160 (156.46) 1.864 (2.774)
6 6.90 (175.30) 6.32 (160.44) 0.276 (7.01) 6.85 (173.99) 8.592 (218.24) 3.874 (5.765)
8 9.05 (229.90) 8.28 (210.43) 0.362 (9.19) 7.87 (199.90) 10.976 (278.78) 6.697 (9.967)
10 11.10 (281.90) 10.16 (257.99) 0.444 (11.28) 9.84 (249.94) 13.483 (342.46) 10.180 (15.149)
12 13.20 (335.30) 12.08 (306.88) 0.528 (13.41) 10.12 (257.05) 15.780 (400.82) 14.435 (21.482)
14 15.30 (388.60) 14.00 (355.67) 0.612 (15.54) 8.75 (222.25) 18.750 (476.25) 19.370 (29.328)
16 17.40 (442.00) 15.93 (404.51) 0.696 (17.68) 9.02 (229.00) 20.589 (522.96) 25.079 (37.322)
PRESSURE CLASS 235 psi (DR18)
4 4.80 (121.90) 4.23 (107.53) 0.267 (6.78) 5.75 (146.05) 6.309 (160.26) 2.544 (3.786)
6 6.90 (175.30) 6.09 (154.67) 0.383 (9.73) 6.85 (173.99) 8.802 (223.56) 5.286 (7.866)
8 9.05 (229.90) 7.99 (202.82) 0.503 (12.78) 7.87 (199.90) 11.258 (285.96) 9.154 (13.623)
10 11.10 (281.90) 9.79 (248.68) 0.617 (15.67) 9.84 (249.94) 13.828 (351.24) 13.900 (20.685)
12 13.20 (335.30) 11.65 (295.82) 0.733 (18.62) 10.12 (257.05) 16.191 (411.24) 19.707 (29.328)
14 15.30 (388.60) 13.50 (342.83) 0.850 (21.59) 8.75 (222.25) 19.250 (488.95) 26.458 (39.373)
16 17.40 (442.00) 15.35 (389.93) 0.967 (24.56) 9.02 (229.00) 21.131 (536.72) 34.233 (50.944)
PRESSURE CLASS 305 psi (DR14)
4 4.80 (121.90) 4.07 (103.44) 0.343 (8.71) 5.75 (146.05) 6.461 (164.12) 3.210 (4.777)
6 6.90 (175.30) 5.86 (148.76) 0.493 (12.52) 6.85 (173.99) 9.021 (229.14) 6.679 (9.939)
8 9.05 (229.90) 7.68 (195.10) 0.646 (16.41) 7.87 (199.90) 11.544 (293.22) 11.554 (17.194)
10 11.10 (281.90) 9.42 (239.21) 0.793 (20.14) 9.84 (249.94) 14.180 (360.18) 17.543 (26.107)
12 13.20 (335.30) 11.20 (284.53) 0.943 (23.95) 10.12 (257.05) 16.610 (421.90) 24.890 (37.040)
14 15.30 (388.60) 12.98 (329.75) 1.093 (27.76) 8.75 (222.25) 19.500 (495.30) 33.410 (49.720)
16 17.40 (442.00) 14.77 (375.08) 1.243 (31.57) 9.02 (229.00) 21.683 (550.74) 43.210 (64.304)

1. Max/min outside diameter refers to the maximum and minimum values of the measured outsider diameter in a given location.
2. The average length of the pipe is 4m or 6m, and the tolerance of difference is +30/-10mm



ASTM D 1785

Unit : mm

PIPE SIZE
in
AVG. O.D
in (mm)
NOM. I.D
in (mm)
MIN. T.
in (mm)
PRESSURE RATING
(psi)
APPROX.  WGT
lbs/ft (kg/m)
Sch. 40
1 ⁄ 2 0.840 (21.34) 0.602 (15.29) 0.109 (2.77) 600 0.164 (0.244)
3 ⁄ 4 1.050 (26.67) 0.804 (20.42) 0.113 (2.87) 480 0.217 (0.323)
1 1.315 (33.40) 1.029 (26.13) 0.133 (3.38) 450 0.320 (0.476)
1 1 ⁄ 4 1.660 (42.16) 1.359 (34.53) 0.140 (3.56) 370 0.432 (0.643)
1 1 ⁄ 2 1.900 (48.26) 1.590 (40.39) 0.145 (3.68) 330 0.515 (0.767)
2 2.375 (60.32) 2.047 (51.99) 0.154 (3.91) 280 0.691 (1.028)
2 1 ⁄ 2 2.875 (73.02) 2.444 (62.09) 0.203 (5.16) 300 1.091 (1.623)
3 3.500 (88.90) 3.042 (77.26) 0.216 (5.49) 260 1.428 (2.126)
3 1 ⁄ 2 4.000 (101.60) 3.521 (89.44) 0.226 (5.74) 240 1.716 (2.553)
4 4.500 (114.30) 3.998 (101.55) 0.237 (6.02) 220 2.033 (3.025)
5 5.563 (141.30) 5.016 (127.41) 0.258 (6.55) 190 2.757 (4.102)
6 6.625 (168.28) 6.031 (153.20) 0.280 (7.11) 180 3.581 (5.328)
8 8.625 (219.08) 7.942 (201.73) 0.322 (8.18) 160 5.392 (8.024)
10 10.750 (273.05) 9.976 (253.39) 0.365 (9.27) 140 7.644 (11.374)
12 12.750 (323.85) 11.889 (301.99) 0.406 (10.31) 130 10.104 (15.035)
14 14.000 (355.6) 13.073 (332.05) 0.437 (11.10) 130 11.961 (17.797)
16 16.000 (406.4) 14.940 (379.48) 0.500 (12.70) 130 15.625 (23.250)
Sch. 80
1 ⁄ 2 0.840 (21.34) 0.526 (13.37) 0.147 (3.73) 850 0.204 (0.304)
3 ⁄ 4 1.050 (26.67) 0.722 (18.34) 0.154 (3.91) 690 0.277 (0.412)
1 1.315 (33.40) 0.936 (23.77) 0.179 (4.55) 630 0.407 (0.605)
1 1 ⁄ 4 1.660 (42.16) 1.255 (31.88) 0.191 (4.85) 520 0.562 (0.836)
1 1 ⁄ 2 1.900 (48.26) 1.476 (37.49) 0.200 (5.08) 470 0.682 (1.015)
2 2.375 (60.32) 1.913 (48.58) 0.218 (5.54) 400 0.944 (1.405)
2 1 ⁄ 2 2.875 (73.02) 2.290 (58.16) 0.276 (7.01) 420 1.440 (2.142)
3 3.500 (88.90) 2.864 (72.75) 0.300 (7.62) 370 1.928 (2.869)
3 1 ⁄ 2 4.000 (101.60) 3.326 (84.48) 0.318 (8.08) 350 2.353 (3.501)
4 4.500 (114.30) 3.786 (96.16) 0.337 (8.56) 320 2.820 (4.196)
5 5.563 (141.30) 4.769 (121.12) 0.375 (9.52) 290 3.911 (5.820)
6 6.625 (168.28) 5.709 (145.02) 0.432 (10.97) 280 5.382 (8.009)
8 8.625 (219.08) 7.565 (192.16) 0.500 (12.70) 250 8.177 (12.167)
10 10.750 (273.05) 9.493 (241.13) 0.593 (15.06) 230 12.122 (18.037)
12 12.750 (323.85) 11.294 (286.87) 0.687 (17.45) 230 16.681 (24.820)
14 14.000 (355.6) 12.410 (315.21) 0.750 (19.05) 220 20.011 (29.776)
16 16.000 (406.4) 14.213 (361.01) 0.843 (21.41) 220 25.727 (38.281)
Sch. 120
1 ⁄ 2 0.840 (21.34) 0.480 (12.19) 0.170 (4.32) 1010 0.227 (0.337)
3 ⁄ 4 1.050 (26.67) 0.690 (17.52) 0.170 (4.32) 770 0.299 (0.444)
1 1.315 (33.40) 0.891 (22.63) 0.200 (5.08) 720 0.446 (0.663)
1 1 ⁄ 4 1.660 (42.16) 1.204 (30.58) 0.215 (5.46) 600 0.622 (0.926)
1 1 ⁄ 2 1.900 (48.26) 1.423 (36.14) 0.225 (5.72) 540 0.756 (1.124)
2 2.375 (60.32) 1.845 (46.86) 0.250 (6.35) 470 1.066 (1.585)
2 1 ⁄ 2 2.875 (73.02) 2.239 (56.87) 0.300 (7.62) 470 1.549 (2.305)
3 3.500 (88.90) 2.758 (70.05) 0.350 (8.89) 440 2.213 (3.293)
3 1 ⁄ 2 4.000 (101.60) 3.258 (82.75) 0.350 (8.89) 380 2.567 (3.819)
4 4.500 (114.30) 3.574 (90.78) 0.437 (11.10) 430 3.563 (5.301)
5 5.563 (141.30) 4.503 (114.38) 0.500 (12.70) 400 5.084 (7.564)
6 6.625 (168.28) 5.435 (138.04) 0.562 (14.27) 370 6.842 (10.180)
8 8.625 (219.08) 7.103 (180.42) 0.718 (18.24) 380 11.407 (16.974)
10 10.750 (273.05) 8.963 (227.67) 0.843 (21.41) 370 16.783 (24.972)
12 12.750 (323.85) 10.630 (270.00) 1.000 (25.40) 340 23.619 (35.145)


KS M 3401

Unit : mm

PIPE SIZE
(mm)
AVG. O.D
(mm)
NOM. I.D
(mm)
MIN. T.
(mm)
NOM. PRESSURE APPROX.  WGT
(kg/m)
PIPE END
(LENGTH)
13 18.00 14.40 1.60 PN20 0.128 PE (4,000)
16 22.00 17.60 2.00 PN20 0.191 PE (4,000)
20 26.00 20.70 2.40 PN20 0.272 PE (4,000)
25 32.00 25.70 2.90 PN20 0.399 PE (4,000)
30 38.00 30.40 3.50 PN20 0.571 PE (4,000)
35 42.00 33.80 3.80 PN20 0.683 PE (4,000)
40 48.00 38.50 4.40 PN20 0.903 PE (4,000)
50 60.00 50.50 4.40 PN16 1.154 BE (6,000)
65 76.00 64.00 5.60 PN16 1.846 BE (6,000)
75 89.00 75.10 6.50 PN16 2.507 BE (6,000)
100 114.00 99.70 6.70 PN16 3.358 BE (6,000)
125 140.00 122.50 8.20 PN16 5.049 BE (6,000)
150 165.00 144.40 9.70 PN16 7.005 BE (6,000)
200 216.00 189.10 12.70 PN16 11.976 BE (6,000)
250 267.00 233.80 15.70 PN16 18.273 BE (6,000)
300 318.00 278.50 18.70 PN16 25.894 BE (6,000)
350 355.00 319.30 16.90 PN12.5 26.456 BE (6,000)
400 400.00 359.60 19.10 PN12.5 33.726 BE (6,000)
450 450.00 404.60 21.50 PN12.5 42.640 BE (6,000)
500 500.00 449.60 23.90 PN12.5 52.598 BE (6,000)
630 630.00 566.80 30.00 PN12.5 83.126 BE (6,000)

1. The average length of a pipe is 6m + length of the bell.
2. Outer Diameter (D) and tolerance depend on the on the pipe (PE)
3.ℓ's tolerance is +30/-10mm
4.t's tolerance depends on the pipe (PE)
5. Applied gasket is Anger Lcok, Turner Gasket, and Turner Lok

Certification

Click on each certification to see the details.

Reference in the US



  • Oakland, CA
    • Oakland, CA

      Oakland, CA

      • In last 15 years, installed cast iron pipe was broken more than 10 times.
      • Installed 6" to 8" iPVC Water Pipe by 65 km
    • Omaha, NE

      Omaha, NE

      • Open Ground Corrosive soils
    • Long Branch, NJ / Salinity Soil area

      Long Branch, NJ
      Salinity Soil area

      • After 1980, replaced cast iron pipe 11 times due to corrosion came from salinity
      • Installed 6" to 12" iPVC Water Pipe
    • Manville, NJ / City Road with a lot of traffic

      Manville, NJ
      City Road with a lot of traffic

      • Installed 6" to 8" iPVC Water Pipe
    • St. Louis, MO / Corrosive Soil area along the Meramec

      St. Louis, MO
      Corrosive Soil area along the Meramec

      • Installed 8" iPVC Water Pipe

    Reference in Korea

    • USAG Humphreys

      USAG Humphreys

      • Size : 14,650,000 m2
      • Amount : KRW 6B (USD 6M)
      • iPVC Water Pipe including 12 Inch was installed as main & full-spec pipeline
    • Seohae Grand Bridge, Dangjin

      Seohae Grand Bridge, Dangjin

      • The Longest cable-stayed bridge in Korea (7.31 km)
      • Installed 250mm iPVC Water Pipe
    • Project of pipeline under railroad track (LH) Installed 20 pcs of 630 mm iPVC Water Pipe

      Project of pipeline under railroad track (LH)
      Installed 20 pcs of 630 mm iPVC Water Pipe

    • Project of Gumi Test Bed (K Water) Installed 400mm iPVC Water Pipe

      Project of Gumi Test Bed (K Water)
      Installed 400mm iPVC Water Pipe