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Pengkumta Fasteners, based in Bangkok, Thailand, provides high-quality Alloy Steel Stud Bolts for heavy-duty applications where strength, toughness, and durability are crucial. These bolts are crafted from specially formulated alloy steels, such as chromium, molybdenum, and vanadium, and are heat-treated to achieve high mechanical properties. Pengkumta maintains strict process control to ensure consistent dimensions, accurate threading, and quality finishes. These stud bolts are widely utilized in the oil and gas, power plant, structural engineering, and heavy equipment sectors. They can withstand high stress, temperature fluctuations, and cyclic loads, making them essential for demanding assemblies.
Alloy steel stud bolts generally contain carbon and other alloying elements like chromium, molybdenum, vanadium, silicon, and occasionally nickel. After heat treatment, they typically achieve tensile strengths ranging from 800 to 1200 MPa, depending on the grade, with yield strengths around 500 to 900 MPa. They also exhibit good hardness, fatigue resistance, and decent toughness.
| Specifications | : | ASTM A 193 ASME SA 193 |
| Standard | : | DIN, ASTM, BS and all International Standards |
| Length | : | 3 mm to B6 mm |
| Size | : | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Type | : | Hex Head Bolts, Square Bolts, U bolts, Eye bolts, T bolt, Hex Bolt, Lag Bolts, Counter sunk Bolts, Hex Head nuts, Square nuts, Lock nuts, Eye nuts, wing nuts, T nuts, Panel Nuts, Coupling Nuts, Dome nuts, Acorn Nuts. |
| Element | Content (%) |
|---|---|
| Iron, Fe | 35 |
| Nickel, Ni | 32-38 |
| Chromium, Cr | 19-21 |
| Copper, Cu | 3-4 |
| Manganese, Mn | ≤2 |
| Molybdenum, Mo | 2-3 |
| Niobium, Nb | ≤1 |
| Silicon, Si | ≤1 |
| Carbon, C | ≤0.07 |
| Phosphorous, P | ≤0.045 |
| Alloy Steel | 0.15 max | 0.3 – 0.6 | 0.035 | 0.03 | 0.5 max | 4.00 – 6.00 | 0.45 – 0.65 |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
Alloy Steel stud bolts are several high-performance uses. In the automotive industry, they are applied in engines, shock absorbers, and other parts of the car that have to do with the drive train. In aerospace they guarantee components and structure parts. In construction, they are used in fixing heavy machineries and structures that may be required in construction. Alloy Steel stud bolts are also used in mining, energy and manufacturing industries where high stress condition is required for the bolts.
Alloy Steel Stud Bolts are suited for high-load, high-pressure, and high-temperature settings such as boiler flanges, pressure vessels, steam piping, petrochemical installations, and heavy structural joints. They are often used when standard carbon or mild steel bolts would fail under stress or fatigue. Industries including power generation, oil and gas, chemical processing, and mining rely on these bolts for safety-critical connections. They maintain mechanical integrity in cyclic loading and harsh mechanical environments and are chosen where high strength and tight tolerances are necessary.
Pengkumta Fasteners is a leading manufacturer and supplier of high-quality fasteners in Bangkok, Thailand, with over 8 years of experience serving global industries.
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