45˚ Elbow 90˚ Elbow Reducer (Concentric/Concentric)
Tees(Straight/Reducing) Sleeve
Fittings and sleeves for MARILOYTM are produced by BENKAN KIKOH Corporation.
Standards for MARILOYTM S-400 Pipes
Welding with MARILOYTM S-400 Pipes
Fittings and Sleeves for MARILOYTM S-400 Pipes
Chemical composition
C
≦0.14Specification
Mechanical properties
Tensile strength(MPa)
Yield strength(MPa)
Elongation(%)
TS of weld joint(MPa)
SML pipesSpecified value
≧400 437
≧245 300
≧23 (L-direction) 55
Actual value
ERW pipesSpecified value
≧400 461
≧245 362
≧23 (L-direction) 47
Actual value
UO pipes
Welding materials U-groove weld cracking test(JIS Z 3157)
Specimens ResultBrand nameTypeTypical mechanical properties of weld metalShield
gasVE0(J)
Covered arc welding electrode 500 580 25 201
580 640 26 54
560 630 23 114
540
CO2
Ar – CO2
Ar 620 26 265
3.2, 4.05.0, 6.0RS-55
1.2, 1.4SF-55RSFlux cored welding wire
1.2YM-55RSAGas metal arc welding wire
2.0, 2.43.2YT-55RSGas tungsten arc
welding rod
Specified value
≧400
≧245(t≦16mm)≧235(t>16mm)
≧19(t≦16mm)≧22(t>16mm)
≧400
459
352
29
497
Actual value
Si
≦0.55
Mn
≦1.50
P
≦0.030
S
≦0.030
Cr
0.80 – 1.30
(mass%)
EL(%)TS(MPa)YS(MPa)Diameter(mm)
There is no need of preheating and postheating. Weldability is the same as welding materials for carbon steels.Welding materials for MARILOYTM are produced by NIPPON STEEL WELDING & ENGINEERING CO.,LTD.
200
80
Welding
A
A’
6060
1/2
1/2
20˚
2±0.2
150
22m
mt
Section A–A’:One-side U-groove
100
Cra
ck r
atio
(%)
80
60
40
20
00 25 50 75 100
Wall thickness:22mmWelding wire:YM-55RSA(1.2mmφ)Welding conditions;100A、16V
Root crack
No need of preheating !
Preheating temperature (˚C)
ASTM JIS 22.0Wall thickness (mm)
Please contact us on the availability of MARILOYTM pipes with nonstandard size.
20.018.016.014.012.010.08.06.04.02.0
34.0
76.3
89.1
101.6
114.3
139.8
165.2
216.3
267.4
318.5
355.6
406.4
457.2
508.0
558.8
609.6
660.4
711.2
762.0
-1422
33.4
73.0
88.9
101.6
114.3
141.3
168.3
219.1
273.0
323.8
355.6
406.4
457
508
559
610
660
711
762
-1422
OD (mm)
Size range (●:Standard size)
SML pipes
ERW pipes
UO pipes
● 9.5
● 9.5
● 9.5
● 9.5
● 9.5
● 9.5
● 9.5
● 9.5
● 9.5
● 9.5
● 9.5
● 9.5
● 9.5
●12.7
●12.7
●12.7
●12.7 ●16.0
●16.0
●16.0
●16.0
●16.0
●16.0
●16.0
●16.0
●16.0
●16.0
●16.0
●12.7
●12.7
●12.7
●12.7
●12.7
●12.7
●12.7
●12.7
●12.7
NIPPON STEEL CORPORATION
TOHSHIKYOEI TANKER CO., LTD.IHI MARINE UNITED INC. 2007
www.nipponsteel.com Pipes& Tubes
2-6-1 Marunouchi, Chiyoda-ku,Tokyo 100-8071 JapanTel: +81-3-6867-4111
MARILOYTM S-400 Pipes,1% Cr Steel for Cargo Oil and Water Ballast Pipes
P107en_01_201904f© 2019 NIPPON STEEL CORPORATION
MARILOYTM
S-400 Pipes,1% Cr Steel for Cargo Oiland Water Ballast Pipes
45˚ Elbow 90˚ Elbow Reducer (Concentric/Concentric)
Tees (Straight/Reducing) Sleeve
Fittings and sleeves for MARILOYTM are produced by BENKAN KIKOH Corporation.
Standards for MARILOYTM S-400 Pipes
Welding with MARILOYTM S-400 Pipes
Fittings and Sleeves for MARILOYTM S-400 Pipes
Chemical composition
C
≦0.14Specification
Mechanical properties
Tensile strength(MPa)
Yield strength(MPa)
Elongation(%)
TS of weld joint(MPa)
SML pipesSpecified value
≧400 437
≧245 300
≧23 (L-direction) 55
Actual value
ERW pipesSpecified value
≧400 461
≧245 362
≧23 (L-direction) 47
Actual value
UO pipes
Welding materials U-groove weld cracking test (JIS Z 3157)
Specimens ResultBrand nameTypeTypical mechanical properties of weld metalShield
gasVE0(J)
Covered arc welding electrode 500 580 25 201
580 640 26 54
560 630 23 114
540
CO2
Ar – CO2
Ar 620 26 265
3.2, 4.05.0, 6.0RS-55
1.2, 1.4SF-55RSFlux cored welding wire
1.2YM-55RSAGas metal arc welding wire
2.0, 2.43.2YT-55RSGas tungsten arc
welding rod
Specified value
≧400
≧245(t≦16mm)≧235(t>16mm)
≧19(t≦16mm)≧22(t>16mm)
≧400
459
352
29
497
Actual value
Si
≦0.55
Mn
≦1.50
P
≦0.030
S
≦0.030
Cr
0.80 – 1.30
(mass%)
EL(%)TS(MPa)YS(MPa)Diameter(mm)
There is no need of preheating and postheating. Weldability is the same as welding materials for carbon steels.Welding materials for MARILOYTM are produced by NIPPON STEEL WELDING & ENGINEERING CO.,LTD.
200
80
Welding
A
A’
6060
1/2
1/2
20˚
2±0.2
150
22m
mt
Section A–A’ :One-side U-groove
100
Cra
ck r
atio
(%)
80
60
40
20
00 25 50 75 100
Wall thickness:22mmWelding wire:YM-55RSA(1.2mmφ)Welding conditions;100A、16V
Root crack
No need of preheating !
Preheating temperature (˚C)
ASTM JIS 22.0Wall thickness (mm)
Please contact us on the availability of MARILOYTM pipes with nonstandard size.
20.018.016.014.012.010.08.06.04.02.0 34.0
76.3
89.1
101.6
114.3
139.8
165.2
216.3
267.4
318.5
355.6
406.4
457.2
508.0
558.8
609.6
660.4
711.2
762.0
-1422
33.4
73.0
88.9
101.6
114.3
141.3
168.3
219.1
273.0
323.8
355.6
406.4
457
508
559
610
660
711
762
-1422
OD (mm)
Size range (●:Standard size)
SML pipes
ERW pipes
UO pipes
● 9.5
● 9.5
● 9.5
● 9.5
● 9.5
● 9.5
● 9.5
● 9.5
● 9.5
● 9.5
● 9.5
● 9.5
● 9.5
●12.7
●12.7
●12.7
●12.7 ●16.0
●16.0
●16.0
●16.0
●16.0
●16.0
●16.0
●16.0
●16.0
●16.0
●16.0
●12.7
●12.7
●12.7
●12.7
●12.7
●12.7
●12.7
●12.7
●12.7
NIPPON STEEL CORPORATION
TOHSHIKYOEI TANKER CO., LTD.IHI MARINE UNITED INC. 2007
www.nipponsteel.com Pipes& Tubes
2-6-1 Marunouchi, Chiyoda-ku,Tokyo 100-8071 JapanTel: +81-3-6867-4111
MARILOYTM S-400 Pipes,1% Cr Steel for Cargo Oil and Water Ballast Pipes
P107en_01_201904p© 2019 NIPPON STEEL CORPORATION
MARILOYTM
S-400 Pipes,1% Cr Steel for Cargo Oiland Water Ballast Pipes
Corrosion in Seawater-Gas Heat Exchanger Tubes Chemical composition: 1%Cr
Mechanical properties: TS=400MPa, on the same level as carbon steels
Weldability: Similar to carbon steels. No preheating is required.Corrosion resistance: Corrosion rate is half that of carbon steel in seawater (The diffusion rate of oxygen is slower in rust layers containing Cr compared to those that do not.) 0.2
0.4
0.6
0.8
1.0
1.2
1.4
Chamber
Cor
rosi
on lo
ss (m
m)
10
20
30
40
50
60
Seaw
ater temperature (˚C
)
Seawater outlet
Seawater inlet
A B C D E F G H I J K
Corrosion loss of MARILOYTM S-400is half that of carbon steel (SS400).
MARILOYTM S-400SS400Seawater temperature
24 months
NIPPON STEEL’s MARILOYTM S-400 steel pipe is a steel product containing 1% chromium for enhanced corrosion resistance when used in or on the ocean. The origin of the word MARILOY comes from a combination of MARINE and ALLOY.
The addition of chromium produces an effect in which the rust layer on the surface prevents oxygen from infiltrating the base metal, thus inhibiting corrosion to half or less compared to ordinary steel.
MARILOYTM S-400 steel pipes are mainly used for the cargo oil pipes in oil tankers, FPSO sys-tems and water ballast pipes. Since its release about 25 years ago, more than 60,000 tons of MARILOYTM S-400 has been used, reflecting highly-valued efficiency of this product.
Supply Records of MARILOYTM S-400 Pipes
Features
Investigation of Secular Changes
MARILOYTM Pipes Reduce Fabrication and Maintenance Costs
0
1,000
2,000
3,000
4,000
5,000
6,000
7,000
Year
’91 ’92 ’93 ’94 ’95 ’96 ’97 ’98 ’99 ’00 ’01 ’02 ’03 ’04 ’05 ’06 ’07 ’08 ’09 ’10 ’11 ’12 ’13 ’14 ’15
Total 63,109 tons (242 vessels) as of 31. March. 2015
Pro
duct
ion
of M
AR
ILO
YTM
pip
e (M
T)
The data at the time of pipe installation
Shipbuilding companiesJAPAN MARINE UNITED CORPORATIONSUMITOMO HEAVY INDUSTRIES, LTD.KAWASAKI HEAVY INDUSTRIES, LTD., NAMURA SHIPBUILDING CO., LTD.BOHAI SHIPBUILDING HEAVY INDUSTRY CO., LTD.NANTONG COSCO KHI SHIP ENGINEERING CO., LTD.HYUNDAI HEAVY INDUSTRIES CO,. LTD.DAEWOO SHIPBUILDING & MARINE ENGINEERING CO., LTDJURONG SHIPYARD PTE LTD, KEPPEL SHIPYARD LIMITED ···etc.
Ship-ownersNIPPON YUSEN KABUSHIKI KAISHA, MITSUI O.S.K. LINES, LTD.KAWASAKI KISEN KAISHA, LTD., KYOEI TANKER CO., LTD.IDEMITSU TANKER CO., LTD., NS UNITED KAIUN KAISHA, LTD.JX OCEAN.,LTD., BW VLCC, FORMOSA PLASTICS CORPORATION, U.S.A.PETROBRAS, DSD SHIPPING AS, TSAKOS SHIPPING (LONDON) LTD.PLEIADES SHIPPING AGENTS S.A., DALIAN OCEAN SHIPPING COMPANYMODEC. INC ···etc.
Type of ship, useVLCC(Cargo Oil pipes, Water ballast pipes), Bulk Carrier(Water ballast pipes)FPSO
Tanker (VLCC)Name of vessel: COSMO ASTREAShip-owner: KYOEI TANKER CO., LTD.Builder: ISHIKAWAJIMA - HARIMA HEAVY INDUSTRIES CO., LTD.Structure: Single-hullMonth and year of completion: November 1992DWT: 230,000MT
Investigated pipesCargo oil pipe: 762.0mmOD, 19mmtWater ballast pipe: 660.4mmOD, 17mmt
Investigation timingAfter 2.5, 7.5, 12.5 and 15 years
Investigated Tanker and Operating Conditions
Inspection method
Inside of pipes were visually inspected and the depth of pitting was measured using depth gauge.
Wall thickness of pipes were continuously measured by using ultrasonic testers.
Results of The Cargo Oil Pipe Inspection
Results of The Water Ballast Pipe Inspection
0.11 2 3 4 5 6 7 8 910 12 20 30 40
0.2
0.4
0.60.8
1
2
4
68
10
20
1% Cr welded steel pipe (MARILOYTM)DECM(ref[1])
1% Cr cast steel pipe (ref.[1])
CM
No.4C
0.3441
0.3441
No.4C
No.5C
No.5C
Max
imum
pit
dept
h (m
m)
Service duration (year)
ref.[1] Kawamoto et.al, J. Soc. Naval. Architecs of Japan, No.271,9.36,1989
1%Cr cast steel
MARILOYTMMARILOYTM
1
109
Cor
rosi
on lo
ss (m
m)
Service duration (year)
TSTO
876
5
4
3
2
d = 5.9265t 0.3441
2
1
The corrosion depth of MARILOYTM is estimated to be less than 7mm even after 30 years in service.
Loss of wall thickness due to corrosion is estimated to be about 4mm after 30 years.
1 2 3 4 5 6 7 8 910 12 20 30 40
Inside of cargo oil pipeafter 2.5 years
Inside of cargo oil pipeafter 7.5 years
Inside of cargo oil pipeafter 15 years
Pit with maximum depth (5mm)after 15 years-service
Inside of water ballast pipeafter 2.5 years
Inside of water ballast pipeafter 7.5 years
Inside of water ballast pipeafter 15 years
Inside of water ballast pipe after shot blasting
Maximum pit depth vs. Time
Rust layer thickness vs. Time
MARILOYTM Reduces Maintenance CostsMARILOYTM Reduces Fabrication Costs
MARILOYTM pipes without inner surface coating
Coated carbon steel pipes
No need to repair
Coated carbon steel pipes
Flange
MARILOYTM pipeswithout inner surface coating
Sleeve FlangeWelding
Merit: Fabrication cost and time can be reduced.
General corrosion: 3mm/15years
Local corrosion: 5 – 7mm/12.5years
Blister Breakage
Local repair
After a long-time
serviceInner surface:small pits
Inner surface:general corrosion
After a long-time
serviceInner surface: Coating is sometimes damaged within several years, which can lead to local corrosion.
Ship : measure the lengthShop : cut, angle-weld and paintShip : joint with bolts
Ship : cut and weld
MARILOYTM pipes are estimated to have a usable life of more than 30 years.
Several repairs and/or replacement of pipes may be necessary during the ship’s life.
Water ballast pipeCargo oil pipe
Water ballast pipeCargo oil pipe
An example of damage tothe tar epoxy coating
Notice:While every effort has been made to ensure the accuracy of the information contained within this publication, the use of the information is at the reader’s risk and no warranty is implied or expressed by NIPPON STEEL CORPORATION with respect to the use of the information contained herein. The information in this publication is subject to change or modification without notice. Please contact the NIPPON STEEL CORPORATION office for the latest information. Please refrain from unauthorized reproduction or copying of the contents of this publication.The names of our products and services shown in this publication are trademarks or registered trademarks of NIPPON STEEL CORPORATION, affiliated companies, or third parties granting rights to NIPPON STEEL CORPORATION or affiliated companies. Other product or service names shown may be trademarks or registered trademarks of their respective owners.
①
②
③
①
②
③
❶
❷
❸
❹
NIPPON STEEL CORPORATION
Corrosion in Seawater-Gas Heat Exchanger Tubes Chemical composition: 1%Cr
Mechanical properties: TS=400MPa, on the same level as carbon steels
Weldability: Similar to carbon steels. No preheating is required.Corrosion resistance: Corrosion rate is half that of carbon steel in seawater (The diffusion rate of oxygen is slower in rust layers containing Cr compared to those that do not.) 0.2
0.4
0.6
0.8
1.0
1.2
1.4
Chamber
Cor
rosi
on lo
ss (m
m)
10
20
30
40
50
60
Seaw
ater temperature (˚C
)
Seawater outlet
Seawater inlet
A B C D E F G H I J K
Corrosion loss of MARILOYTM S-400is half that of carbon steel (SS400).
MARILOYTM S-400SS400Seawater temperature
24 months
NIPPON STEEL’s MARILOYTM S-400 steel pipe is a steel product containing 1% chromium for enhanced corrosion resistance when used in or on the ocean. The origin of the word MARILOY comes from a combination of MARINE and ALLOY.
The addition of chromium produces an effect in which the rust layer on the surface prevents oxygen from infiltrating the base metal, thus inhibiting corrosion to half or less compared to ordinary steel.
MARILOYTM S-400 steel pipes are mainly used for the cargo oil pipes in oil tankers, FPSO sys-tems and water ballast pipes. Since its release about 25 years ago, more than 60,000 tons of MARILOYTM S-400 has been used, reflecting highly-valued efficiency of this product.
Supply Records of MARILOYTM S-400 Pipes
Features
Investigation of Secular Changes
MARILOYTM Pipes Reduce Fabrication and Maintenance Costs
0
1,000
2,000
3,000
4,000
5,000
6,000
7,000
Year
’91 ’92 ’93 ’94 ’95 ’96 ’97 ’98 ’99 ’00 ’01 ’02 ’03 ’04 ’05 ’06 ’07 ’08 ’09 ’10 ’11 ’12 ’13 ’14 ’15
Total 63,109 tons (242 vessels) as of 31. March. 2015
Pro
duct
ion
of M
AR
ILO
YTM
pip
e (M
T)
The data at the time of pipe installation
Shipbuilding companiesJAPAN MARINE UNITED CORPORATIONSUMITOMO HEAVY INDUSTRIES, LTD.KAWASAKI HEAVY INDUSTRIES, LTD., NAMURA SHIPBUILDING CO., LTD.BOHAI SHIPBUILDING HEAVY INDUSTRY CO., LTD.NANTONG COSCO KHI SHIP ENGINEERING CO., LTD.HYUNDAI HEAVY INDUSTRIES CO,. LTD.DAEWOO SHIPBUILDING & MARINE ENGINEERING CO., LTDJURONG SHIPYARD PTE LTD, KEPPEL SHIPYARD LIMITED ···etc.
Ship-ownersNIPPON YUSEN KABUSHIKI KAISHA, MITSUI O.S.K. LINES, LTD.KAWASAKI KISEN KAISHA, LTD., KYOEI TANKER CO., LTD.IDEMITSU TANKER CO., LTD., NS UNITED KAIUN KAISHA, LTD.JX OCEAN.,LTD., BW VLCC, FORMOSA PLASTICS CORPORATION, U.S.A.PETROBRAS, DSD SHIPPING AS, TSAKOS SHIPPING (LONDON) LTD.PLEIADES SHIPPING AGENTS S.A., DALIAN OCEAN SHIPPING COMPANYMODEC. INC ···etc.
Type of ship, useVLCC(Cargo Oil pipes, Water ballast pipes), Bulk Carrier(Water ballast pipes)FPSO
Tanker (VLCC)Name of vessel: COSMO ASTREAShip-owner: KYOEI TANKER CO., LTD.Builder: ISHIKAWAJIMA - HARIMA HEAVY INDUSTRIES CO., LTD.Structure: Single-hullMonth and year of completion: November 1992DWT: 230,000MT
Investigated pipesCargo oil pipe: 762.0mmOD, 19mmtWater ballast pipe: 660.4mmOD, 17mmt
Investigation timingAfter 2.5, 7.5, 12.5 and 15 years
Investigated Tanker and Operating Conditions
Inspection method
Inside of pipes were visually inspected and the depth of pitting was measured using depth gauge.
Wall thickness of pipes were continuously measured by using ultrasonic testers.
Results of The Cargo Oil Pipe Inspection
Results of The Water Ballast Pipe Inspection
0.11 2 3 4 5 6 7 8 910 12 20 30 40
0.2
0.4
0.60.8
1
2
4
68
10
20
1% Cr welded steel pipe (MARILOYTM)DECM(ref[1])
1% Cr cast steel pipe (ref.[1])
CM
No.4C
0.3441
0.3441
No.4C
No.5C
No.5C
Max
imum
pit
dept
h (m
m)
Service duration (year)
ref.[1] Kawamoto et.al, J. Soc. Naval. Architecs of Japan, No.271,9.36,1989
1%Cr cast steel
MARILOYTMMARILOYTM
1
109
Cor
rosi
on lo
ss (m
m)
Service duration (year)
TSTO
876
5
4
3
2
d = 5.9265t 0.3441
2
1
The corrosion depth of MARILOYTM is estimated to be less than 7mm even after 30 years in service.
Loss of wall thickness due to corrosion is estimated to be about 4mm after 30 years.
1 2 3 4 5 6 7 8 910 12 20 30 40
Inside of cargo oil pipeafter 2.5 years
Inside of cargo oil pipeafter 7.5 years
Inside of cargo oil pipeafter 15 years
Pit with maximum depth (5mm)after 15 years-service
Inside of water ballast pipeafter 2.5 years
Inside of water ballast pipeafter 7.5 years
Inside of water ballast pipeafter 15 years
Inside of water ballast pipe after shot blasting
Maximum pit depth vs. Time
Rust layer thickness vs. Time
MARILOYTM Reduces Maintenance CostsMARILOYTM Reduces Fabrication Costs
MARILOYTM pipes without inner surface coating
Coated carbon steel pipes
No need to repair
Coated carbon steel pipes
Flange
MARILOYTM pipeswithout inner surface coating
Sleeve FlangeWelding
Merit: Fabrication cost and time can be reduced.
General corrosion: 3mm/15years
Local corrosion: 5 – 7mm/12.5years
Blister Breakage
Local repair
After a long-time
serviceInner surface:small pits
Inner surface:general corrosion
After a long-time
serviceInner surface: Coating is sometimes damaged within several years, which can lead to local corrosion.
Ship : measure the lengthShop : cut, angle-weld and paintShip : joint with bolts
Ship : cut and weld
MARILOYTM pipes are estimated to have a usable life of more than 30 years.
Several repairs and/or replacement of pipes may be necessary during the ship’s life.
Water ballast pipeCargo oil pipe
Water ballast pipeCargo oil pipe
An example of damage tothe tar epoxy coating
Notice:While every effort has been made to ensure the accuracy of the information contained within this publication, the use of the information is at the reader’s risk and no warranty is implied or expressed by NIPPON STEEL CORPORATION with respect to the use of the information contained herein. The information in this publication is subject to change or modification without notice. Please contact the NIPPON STEEL CORPORATION office for the latest information. Please refrain from unauthorized reproduction or copying of the contents of this publication.The names of our products and services shown in this publication are trademarks or registered trademarks of NIPPON STEEL CORPORATION, affiliated companies, or third parties granting rights to NIPPON STEEL CORPORATION or affiliated companies. Other product or service names shown may be trademarks or registered trademarks of their respective owners.
①
②
③
①
②
③
❶
❷
❸
❹
NIPPON STEEL CORPORATION
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