- HOME
- Products
- Commodity & Pipe and Tubes TOP
- Steel Pipe for Plumbing
- 2023.12.26¡¡Â鶹ÊÓƵ Steel’s Steel Pipe Products Certified Under Japan’s “EcoLeaf” Environmental Product Declaration Program
- 2023.12.15¡¡Â鶹ÊÓƵ Steel Deploys "Teachingless" Robotic System for Automated Steel Pipe Grinding at Chita Works
- 2023.12.15¡¡Â鶹ÊÓƵ Steel’s R&D into Line Pipe for Transporting High-pressure Hydrogen Gas Selected for Nippon Foundation—DeepStar Joint Project
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, Â鶹ÊÓƵ Steel can also supply products conforming to API, ASTM, and other international standards.
Types and Features of Â鶹ÊÓƵ 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 |
15´¡¡«100´¡ 15´¡¡«500´¡ |
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¡ãC. 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 |
20´¡¡«400´¡ 15´¡¡«650´¡ |
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¡ãC. 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 |
400´¡¡«1600´¡ 400´¡¡«2000´¡ ¡«4000´¡ |
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¡ãC. 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) |
|---|---|---|
| Â鶹ÊÓƵ standard STPY400EQ |
125´¡¡«650´¡ | 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 |
20´¡¡«400´¡ | Seamless |
| 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 |
20´¡¡«400´¡ | Seamless |
| Main features and applications | ||
| 1)Used mainly for the transportation of air, oil, gas, and other fluids at ambient temperatures below -15¡ãC. 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 |
20´¡¡«400´¡ | Seamless |
| Main features and applications | ||
| 1)Used mainly for piping applications at ambient temperatures between 350¡ãC and 450¡ãC. 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 |
20´¡¡«400´¡ | Seamless |
| Main features and applications | ||
| 1)Used mainly for high-pressure piping applications at ambient temperatures above 350¡ãC. 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 |
80´¡¡«100´¡ 125´¡¡«650´¡ 400´¡¡«1600´¡ 400´¡¡«2500´¡ ¡«4000´¡ |
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® |
65´¡¡«650´¡ 400´¡¡«1000´¡ |
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 |
15´¡¡«100´¡ 25´¡¡«500´¡ |
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 ³§³Ò±Ê-±Ê´¡¡¢±Êµþ¡¢±Ê¶Ù |
15£Á¡«100£Á | 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¡ãC. 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 ³§³Ò±Ê-³Õ´¡¡¢³Õµþ¡¢³Õ¶Ù |
15£Á¡«150£Á | 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¡ãC. 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 |
40£Á¡«200£Á | 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¡ãC. 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 |
20£Á¡«750£Á 150£Á¡«600£Á |
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¡ãC. |  |
||
Polyethylene-Coated Steel Pipe/PLS
| Standards/code | Available specifications (nominal diameter) | Manufacturing method (raw pipe) |
|---|---|---|
| JIS G 3477-2 PE1H |
15£Á¡«100£Á |
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) |
|---|---|---|
| £ | 15£Á¡«100£Á | 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 |
15£Á¡«150£Á 25´¡¡«150´¡ |
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 ¡°Â鶹ÊÓƵ Steel Corrosion-Resistant Steel Pipe.¡±