Phanuphong Steel and Plates is a top-notch manufacturer and supplier located in Bangkok, Thailand, with a focus on producing high-quality alloy steel valves. We’re dedicated to precision engineering and adhere to international standards, serving a diverse array of industries such as oil & gas, petrochemicals, power plants, and marine. Our state-of-the-art facilities and skilled team guarantee that every product we deliver is reliable, durable, and performs at its best. We take pride in our quick delivery, customer-centric service, and competitive pricing, making us a trusted partner for alloy steel valve solutions both locally and internationally.
Alloy steel valves are crafted from premium alloys like ASTM A182 F11, F22, or F91, which usually include chromium (1–9%), molybdenum (0.5–1%), and trace elements like vanadium. These components boost strength, hardness, and resistance to corrosion. Their mechanical properties feature a tensile strength ranging from 415–585 MPa, yield strength between 205–275 MPa, and impressive toughness even at high temperatures. These valves are known for their excellent thermal resistance, making them perfect for high-pressure, high-temperature situations. At Phanuphong Steel, we ensure meticulous metallurgy and heat treatment processes to maintain consistent mechanical performance.
| Material | Low Alloy Steel |
| Seal Material | PTFE/ RPTFE |
| Working Pressure | 1.6 – 6.4Mpa |
| Working Temperature | -29°C — +180°C |
| Available Size | 1/2″-4″,(DN15-DN100) |
| Available Connection | BSP/ BSPT/ NPT/ Flanged/ Welded |
| Nominal Pressure | P10/PN16 |
| Operation | Manual,Pneumatic, Electric |
| Suitable Medium | Water,Sewage,Seawater,Gas,Food,Oils,etc |
| Standards | GB9112,DIN2501,BS4504,ISO2084,ANSI125 |
| Applications | Water, Oil, Gas, |
| Nominal Diameter | DN40-DN300 handle lever DN350-DN1200 gear box |
| Operation Temperature | -10°C~150°C |
| Grade | Ni | Fe | C | Mn | Si | Cu | Cr | Mo | S | P | Nb |
| Alloy Steel Valves | 32 – 38 | Bal | 0.02 max | 1 – 2 | 0.7 max | 3 – 4 | 19 – 21 | 2 – 3 | 0.005 max | 0.02 max | 0.1 – 0.3 |
| Element | Tensile Strength | Density | Melting Point | Elongation | Yield Strength (0.2%Offset) |
| Alloy Steel Valves | Psi -80,000, MPa -551 | 8.1 g/cm3 | 1443 °C (2430 °F) | 30 % | Psi – 35,000, MPa – 241 |
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 most prominent manufacturers and suppliers of superior quality Alloy Steel Valves in Bangkok, Thailand. As experts in steel solutions, we supply a complete spectrum of products like Carbon Steel, Alloy Steel, Mild Steel, and Galvanized Steel. Our product range comprises Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets, and Plates. Known for our reliable delivery and first-rate customer service, we are committed to supplying high-quality steel materials that guarantee durability and excellent performance in numerous industrial applications.
Alloy steel valves play a crucial role in applications that demand high strength, corrosion resistance, and the ability to withstand extreme temperatures. They are commonly found in power generation, oil and gas pipelines, chemical processing plants, and refineries, where they manage and regulate fluid flow under challenging conditions. These valves are also ideal for steam systems, high-pressure boilers, and thermal power stations. Thanks to their durability and mechanical reliability, they are the go-to choice for critical operations where failure is simply not an option. Phanuphong Steel’s alloy steel valves comply with international standards, ensuring top-notch quality 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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