Phanuphong Steel and Plates, a top-notch manufacturer and supplier based in Bangkok, Thailand, is all about high-quality carbon steel pipes, particularly those that meet the JIS G3456 standard. Known for their precision engineering and durability, this company caters to a diverse range of industries with dependable steel solutions. With cutting-edge production facilities and a strong commitment to quality assurance, Phanuphong Steel makes sure that every JIS G3456 carbon steel pipe adheres to international standards. Their expertise in sourcing, fabrication, and distribution ensures consistent performance, making them a reliable partner for projects that need robust, long-lasting piping systems across the energy, construction, and industrial sectors.
When it comes to Carbon Steel JIS G3456 pipes, they’re primarily made of iron with a controlled carbon content that usually falls between 0.17% and 0.25%, along with trace amounts of manganese, phosphorus, and sulfur. These chemical characteristics create a perfect blend of strength and ductility. On the mechanical side, these pipes boast a tensile strength of around 410–560 MPa and a yield strength of 245–355 MPa, which helps them withstand internal pressure and mechanical stress. They also offer good weldability, toughness, and hardness, making them a great fit for high-pressure and high-temperature applications in industrial piping systems.
| Standards | JIS G3456 Carbon Steel Pipe |
|---|---|
| JIS G3456 Carbon Steel Seamless Pipe Size | 4 to 219mm W. T.: 0.5 to 20mm |
| JIS G3456 Carbon Steel Welded Pipe Size | 5.0 mm – 1219.2 mm |
| JIS G3456 Carbon Steel EFW Pipe size | 5.0 mm – 1219.2 mm |
| JIS G3456 Carbon Steel Tube Swg & Bwg | 10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg. |
| JIS G3456 Carbon Steel Pipe Schedule | SCH5, SCH10, SCH10S, SCH20, SCH30, SCH40, SCH40S, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
| JIS G3456 Carbon Steel Seamless Tube Size | 3.35 mm OD To 101.6 mm OD |
| JIS G3456 Carbon Steel Welded Tube Size | 6.35 mm OD To 152 mm OD |
| Swg & Bwg | 10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg. |
| JIS G3456 Carbon Steel Tube wall thickness | 0.020″ –0.220″, (special wall thicknesses available) |
| Length | Single Random, Double Random, Standard & Cut length Pipe & Tube |
| Finish | Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF |
| Form | Round, Hydraulic, ‘U’ bent or Hollow,LSAW, Boiler, Straight Pipe, Clad Pipe, Rectangular, Square Pipe Etc |
| Type | Welded, Seamless, ERW, EFW, Fabricated Pipe, ‘U’ bent or Hollow, Hydraulic, LSAW, Boiler, Straight Tube, Tube Coil, Round, Rectangular, Square Tube etc |
| End | Plain End, Beveled End, Treaded Pipe & Tube |
| Marking | All JIS G3456 Carbon Steel Pipe are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or according to the customer’s request.) |
| Application | Oil Pipe & Tube, Gas Pipe & Tube, Fluid Pipe & Tube, Boiler Pipe & Tube, Heat exchanger Tube |
| Value Added Service | Draw & Expansion as per required Size & Length, Polish (Electro & Commercial) Annealed & Pickled Bending, Machining Etc. |
| Test Certificate | Manufacturer Test Certificate Laboratory Test Certificate from Govt. Approved Lab. Under Third Party Inspection |
| Grade | C | Si | Mn | P | S |
| JIS G3456 STPT370 | ≤ 0.25 | 0.10-0.35 | 0.30-0.90 | ≤ 0.035 | ≤ 0.035 |
| JIS G3456 STPT410 | ≤ 0.30 | 0.10-0.35 | 0.30-1.00 | ≤ 0.035 | ≤ 0.035 |
| JIS G3456 STPT480 | ≤ 0.33 | 0.10-0.35 | 0.30-1.00 | ≤ 0.035 | ≤ 0.035 |
| Grade | Tensile Property (N/mm2) | Yield Point or Yield Strength (N/mm2) | Elongation (%) | |||
| NO. 11 Sample; NO. 12 Sample | NO. 5 Sample | NO. 4 Sample | ||||
| Longitudinal | Transverse | Longitudinal | Transverse | |||
| JIS G3456 STPT370 | ≥ 370 | ≥ 215 | ≥ 30 | ≥ 25 | ≥ 28 | ≥ 23 |
| JIS G3456 STPT410 | ≥ 410 | ≥ 245 | ≥ 25 | ≥ 20 | ≥ 24 | ≥ 19 |
| JIS G3456 STPT480 | ≥ 480 | ≥ 275 | ≥ 25 | ≥ 20 | ≥ 22 | ≥ 17 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Phanuphong Steel is one of the prominent manufacturers and suppliers of high-quality Carbon Steel JIS G3456 Pipe in Bangkok, Thailand. Being a company of premium steel material, we have a comprehensive product range in the form of Carbon Steel, Alloy Steel, Mild Steel, and Galvanized Steel. Our wide inventory list consists of Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets, and Plates. With commitments to time-to-market delivery and high quality of customer service, Phanuphong Steel assures to deliver high-quality raw materials for better performance in any demanding industrial applications. Contact us today at Phanuphong Steel to order all of your Carbon Steel JIS G3456 Pipe needs.
| Type | Allowable Deviation of Outer Diameter | Allowable Deviation of Wall Thickness | |||
| Hot-Working Seamless Steel Pipe | ＜50 mm | ± 0.5 mm | ＜ 4 mm ≥ 4mm | ± 0.5 mm ±12.5% | ≤ 20% of thickness |
| ≥ 50mm~＜160mm | ± 1% | ||||
| ≥ 160mm~≤ 200 mm | ± 1.6 mm | ||||
| ≥ 200 mm | ± 0.8% | ||||
| For ≥350 mm ones, we can measure according to the perimeters. Allowable deviation is ± 0.5%. | |||||
| Cold-Working Steel Seamless Pipe and Electric-Resistance Welded(ERW) Steel Pipe | ≤ 40 mm | ± 0.03 mm | ＜ 2 mm ≥ 2 mm | ± 0.2 mm ± 10 | |
Carbon Steel JIS G3456 pipes are a go-to choice in industries that need strong, durable piping solutions. They excel at transporting water, oil, gas, and steam in industrial plants, refineries, and chemical facilities. Plus, they’re used in construction for structural applications like scaffolding, support frameworks, and mechanical systems. Thanks to their excellent pressure resistance and thermal performance, these pipes are perfect for high-temperature operations and heavy-duty applications. Their versatility, resistance to corrosion, and ease of installation make them a top pick for energy, manufacturing, and infrastructure projects, ensuring long-term reliability and performance.
Phanuphong Steel is a leading manufacturer, supplier and exporter of high-quality Carbon Steel, Alloy Steel, Mild Steel and Galvanized Steel products. Our extensive product range includes Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets and Plates, catering to various industries in Bangkok, Thailand.
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