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Steel Pipe for Plumbing

Superior Quality

Our steel products are all manufactured in an integrated steel making production system. Using the latest technology and equipment across all manufacturing processes ensures that all our products can be relied on to be of the highest quality.

Available in Wide Range of Sizes

With every kind of steel pipe manufacturing facilities for forge welded pipe, ERW steel pipe, seamless pipe, UOE steel pipe, spiral steel pipe, bending steel pipe, and more, our products can meet the requirements for a wide range of applications and sizes.

Wide Range of Quality Standards

We offer an extensive lineup of steel pipe for plumbing to meet JIS requirements for everything from carbon steel pipe for plumbing and for high-pressure services at low temperature or high temperature. In addition, with a variety of plants for zinc coating, unplasticized PVC coating, and polyethylene powder-coating, our steel pipe products can be supplied to meet the corrosion-resistance requirements stipulated by JIS standards, as well as JWWA (Japan Water Works Association) and WSP (Japan Water Steel Pipe Association) standards. In addition to Japanese standards, JFE Steel can also supply products conforming to API, ASTM, and other international standards.

Types and Features of JFE Steel Pipe for Plumbing

Steel pipe

Carbon Steel Pipe for Plumbing

Standards/code Available specifications (nominal diameter) Manufacturing
method (raw pipe)
JIS G 3452
SGP
15A~100A
15A~500A
Forge welded
ERW (including hot finishing)
Main features and applications
1)Used for the transportation of water (not water supplies), air, steam, oil, gas, and other fluids at relatively low pressures. For water supply piping, plastic-lined steel pipe made by coating SGP (carbon steel pipe for ordinary piping) 2)Two different kinds: black pipe and white pipe. Operating temperature range: -15 to 350°C. 3)MZN grade groove corrosion-resistant ERW steel pipe is also sold, for protection against the groove corrosion that may occur along the welds of ERW steel pipe.

Carbon Steel Pipe for Pressure Services for Plumbing

Standards/code Available specifications (nominal diameter) Manufacturing
method (raw pipe)
JIS G 3454
STPG
20A~400A
15A~650A
Seamless
ERW
(including hot finishing)
Main features and applications
1)Used for the transportation of water, air, steam, oil, gas, and other fluids at temperatures up to approximately 350°C. 2)MZN grade groove corrosion-resistant ERW steel pipe is also sold, for protection against the groove corrosion that may occur along the welds of ERW steel pipe. 3)Available in two strength grades of 370 and 410, and in Schedule Nos. (pipe thickness) of 10, 20, 30,40, 60, and 80.

Arc Welded Carbon Steel Pipe for Plumbing

Standards/code Available specifications (nominal diameter) Manufacturing
method (raw pipe)
JIS G 3457
STPY
400A~1600A
400A~2000A
~4000A
UOE
Spiral(JIS compatible)
Plate bending
Main features and applications
1)Used for the transportation of water, air, steam, oil, gas, and other fluids at relatively low pressures. 2)Operating temperature range: -15 to 350°C. 3)In addition to STPY400, pipe is manufactured from various other kinds of plate steel.

ERW Carbon Steel Pipe for Plumbing

Standards/code Available specifications (nominal diameter) Manufacturing
method (raw pipe)
JFE standard
STPY400EQ
125A~650A ERW
Main features and applications
1)Mechanical performance equivalent to STPY400 (manufactured by ERW). Can be used when steel pipe STPY400 does not meet pipe thickness requirements. 2)MZN grade groove corrosion-resistant ERW steel pipe is also sold, for protection against the groove corrosion that may occur along the welds of ERW steel pipe.

Carbon Steel Pipe for High-Pressure Services for Plumbing

Standards/code Available specifications (nominal diameter) Manufacturing
method (raw pipe)
JIS G 3455
STS
20A~400ASeamless
Main features and applications
1)Used for high-pressure applications that require specifications beyond those of STPG (carbon steel pipes for pressure service for plumbing). 2)Available in three strength grades of 370, 410, and 480, and in Schedule Nos. (pipe thickness) of 40, 60, 80, 100, 120, 140, and 160.

Steel Pipe for Low-Temperature Services for Plumbing

Standards/code Available specifications (nominal diameter) Manufacturing
method (raw pipe)
JIS G 3460
STPL
20A~400ASeamless
Main features and applications
1)Used mainly for the transportation of air, oil, gas, and other fluids at ambient temperatures below -15°C. 2)Available in three strength grades of 380, 450, and 690, and in Schedule Nos. (pipe thickness) of 10, 20, 30, 40, 60, 80, 100, 120, 140, and 160.

Steel Pipe for High-Temperature Services for Plumbing

Standards/code Available specifications (nominal diameter) Manufacturing
method (raw pipe)
JIS G 3456
STPT
20A~400A Seamless
Main features and applications
1)Used mainly for piping applications at ambient temperatures between 350°C and 450°C. 2)Available in three strength grades of 370, 410, and 480, and in Schedule Nos. (pipe thickness) of 10, 20, 30, 40, 60, 80, 100, 120, 140, and 160.

Alloy Steel Pipe for Plumbing

Standards/code Available specifications (nominal diameter) Manufacturing
method (raw pipe)
JIS G 3458
STPA
20A~400ASeamless
Main features and applications
1)Used mainly for high-pressure piping applications at ambient temperatures above 350°C. 2)Available in seven alloy compositions and in Schedule Nos. (pipe thickness) of 10, 20, 30, 40, 60, 80, 100, 120, 140, and 160.

Coated Steel Pipe for Water Transportation

Standards/code Available specifications (nominal diameter) Manufacturing
method (raw pipe)
JIS G 3443
STW
80A~100A
125A~650A
400A~1600A
400A~2500A
~4000A
Forge welded
ERW
UOE
Spiral
Plate bending
Main features
1)Used mainly for water supply piping at static head values up to 100 m, but also for industrial water and agricultural water systems. 2)Available in three strength grades of 290, 370, and 400. The 290 is equivalent to SGP; the 370 is defined as raw pipe equivalent to STPG370 of nominal size up to 300 A; and the 400 is defined as raw pipe equivalent to STPY of nominal size 350 A or larger.

MarineCop®

Standards/code Available specifications (nominal diameter) Manufacturing
method (raw pipe)
MarineCop®
65A~650A
400A~1000A
ERW
UOE
Main features
1)Used for loading line piping for crude oil tankers and for the ballast water of all kinds of ships. 2)Can be used uncoated. (Has better corrosion resistance than STPY+ coating.) 3)Excellent on-site weldability.

Steel Pipe for Plumbing

Standards/code Available specifications (nominal diameter) Manufacturing
method (raw pipe)
ASTM NPS 1~16
NPS 11/4~26
NPS 16~64
Seamless
ERW
UOE
Main features and applications
1)Made in accordance with ASTM (American Society for Testing and Materials) standards, but also used in Japan, mainly for indirect exports. 2)Conforms to A53 (JIS SGP/STPG equivalent), A135 (JIS STPG equivalent), A106 (JIS STP equivalent), and A134/A139 (JIS STPY equivalent).

Line Pipe

Standards/code Available specifications (nominal diameter) Manufacturing
method (raw pipe)
ISO 3183
API 5L
JIS G 3476
ND 2~16
ND 11/4~26
ND 16~64
Seamless
ERW
UOE
Main features and applications
1)Made in accordance with API (American Petroleum Institute) standards, but also used in Japan for oil and natural gas-related piping, mainly for indirect exports. 2)Available in a wide range of strength grades: L245 (X42), L290 (X46), L320 (X52), L360 (X56), L415 (X60), L450 (X65), L485 (X70), L555 (X80)

*1) Pipe of size 80 A or less is generally packaged in bundles. For details on the number of pipes per bundle, see the catalog for the specific product.
*2) Pipe and tube products can also be manufactured to specifications other than those detailed above. Please inquire for details.

Corrosion-Resistant Steel Pip

Galvanized Steel Pipe for Water Piping

Standards/code Available specifications (nominal diameter) Manufacturing
method (raw pipe)
JIS G 3442
SGPW
15A~100A
25A~500A
Forge welded
ERW
Main features and applications
1)This is galvanized steel pipe made by zin-coating SGP (carbon steel pipe for ordinary piping). 2)The quantity of zinc deposited, which is higher than that of SGP “white tube,” has an average value of at least 600 g/m2 and a minimum value of 550 g/m2. 3)Used for a wide range of other non-water supply piping applications, including air conditioning, fire fighting, wastewater, and industrial water.

Polyethylene-Lined Steel Pipe for Water Supplies (PFP)

Standards/code Available specifications (nominal diameter) Manufacturing
method (raw pipe)
JWWA K 132
SGP-PA、PB、PD
15A~100A SGP
Main features and applications
1)This is steel pipe coated on the inside by the fusion of polyethylene powder. 2)Used for water supply piping (including chilled water piping) at temperatures up to 40°C. Not recommended for wastewater. 3)Available in three grades according to the degree of corrosion-resistance of the pipe exterior: PA (primer of rustproof paint), PB (zinc coating), and PD (single-layer PE coating). Generally, PA is used for indoor applications, PB for indoor and outdoor applications, and PD for buried piping. 4)Can be used for rolled thread with excellent earthquake-resistance. 5)Coating thickness is approximately 0.5 mm, resulting in a larger cross-sectional area than other kinds of lined steel pipe, and therefore less pressure drop. 6)Excellent cold resistance. 7)Excellent recyclability (without the need for separated waste collection)

PVC-Lined Steel Pipe/JLP

Standards/code Available specifications (nominal diameter) Manufacturing
method (raw pipe)
JWWA K 116
SGP-VA、VB、VD
15A~150A SGP
Main features and applications
1)This steel pipe is made by bonding a PVC lining to the inside of steel pipe. 2)Used for its excellent corrosion-resistance for water supply piping in the temperature range -5 to 40°C. 3)Available in three grades, according to the degree of corrosion-resistance of the pipe exterior: VA (primer of rustproof paint), VB (zinc coating for water piping), VD (PVC). Generally, VA is used for indoor applications, VB for indoor and outdoor applications, and VD for buried piping.

PVC-Lined Steel Pipe for Wastewater/JDPL

Standards/code Available specifications (nominal diameter) Manufacturing
method (raw pipe)
WSP 042
D-VA
40A~200A Thin-walled pipe
Main features and applications
1)This steel pipe is made by bonding a PVC lining to the inside of steel pipe. 2)Used for wastewater piping at temperatures up to 60°C. 3)Pipe thickness is low, so weighs 30% to 50% less than SGP pipe. 4)For joining, use flexible couplings for wastewater piping (e.g., MD couplings).

Polyethylene-Coated Steel Pipe/PLP

Standards/code Available specifications (nominal diameter) Manufacturing
method (raw pipe)
JIS G 3477-2
PE2S
PE1H

20A~750A
150A~600A
SGP
STPG
STPY
STPL
STS
Main features and applications
1)This steel pipe is made by covering the exterior of steel pipe with one or two layers of high-density polyethylene. 2)The 2-layer type is made by applying two layers of PE-a rustproofing layer and a packing layer-over an adhesive. 3)The 1-layer type is made by applying PE thickly as a rustproofing layer over an adhesive. 4)Operating temperature range: -20 to 40°C.

Polyethylene-Coated Steel Pipe/PLS

Standards/code Available specifications (nominal diameter) Manufacturing
method (raw pipe)
JIS G 3477-2
PE1H

15A~100A
SGP
Main features and applications
1)This is small-diameter version of the PLP 1-layer type, sold under the trade name “PLS.” 2)Can be used for thread cutting without the layer peeling off. Can also be used for thread rolling. The standard coating color is green but on request the coating can also be supplied in ivory. 3)Used mainly for buried gas piping, but due its weather-resistance, can also be used for risers.

PVC-Coated Steel Pipe/PLV

Standards/code Available specifications (nominal diameter) Manufacturing
method (raw pipe)
15A~100A SGP
Main features and applications
1)This pipe is made by coating the exterior of SGP pipe with PVC. The coating color is ivory. 2)Can be used for thread cutting without the layer peeling off. Can also be used for thread rolling. 3)Used mainly for buried gas piping, but due to its excellent weather-resistance, can also be used for risers.

Exterior PVC-Coated Steel Pipe for Fire Fighting

Standards/code Available specifications (nominal diameter) Manufacturing
method (raw pipe)
WSP 041
SGP-VS
STPG-VS

15A~150A
25A~150A
SGP
STPG
Main features and applications
1)This steel pipe is made by applying a PVC coating to the exterior of SGP “white tube.” The coating is a khaki color. 2)There is also pipe made by applying a PVC coating to the exterior of STPG370 and STPG410 “white tube.” 3)The coating is a hard (VS) type of PVC. 4)This pipe is used mainly for buried fire hydrant piping, but it can also be used for exposed piping in outdoor environments.

*1) Use only specialized products for couplings on corrosion-resistant steel pipe.
*2) For details about corrosion-resistant steel pipe, refer to the catalog “JFE Steel Corrosion-Resistant Steel Pipe.”