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Pengkumta Fasteners, located in the vibrant city of Bangkok, Thailand, stands out as a top-notch manufacturer and supplier of high-quality ASTM A193 B8 CL3 Fasteners. These fasteners are celebrated for their precision engineering and remarkable durability. With a strong commitment to excellence, Pengkumta ensures that their products meet rigorous international standards, delivering reliable performance in critical industrial settings. Thanks to their advanced manufacturing techniques and strict quality control measures, their ASTM A193 B8 CL3 Fasteners are trusted across various industries for creating secure and long-lasting connections. Whether serving local clients or those around the globe, Pengkumta Fasteners blends expertise, innovation, and a customer-centric approach to provide solutions that prioritize safety, efficiency, and structural integrity in even the most demanding environments.
When it comes to composition, ASTM A193 B8 CL3 Fasteners are primarily made from high-grade austenitic stainless steel, which offers outstanding corrosion resistance and impressive tensile strength. These fasteners typically feature a well-balanced mix of chromium and nickel, boosting their durability and performance in extreme conditions. Mechanically, they excel in hardness, strength, and toughness, adhering to ASTM A193 specifications for critical pressure and temperature applications. With their precise dimensional accuracy, these fasteners guarantee reliable torque performance and secure fastening. They are engineered to endure high-pressure environments and resist wear, fatigue, and chemical exposure, making them perfect for tough industrial applications where safety and longevity are paramount.
| Element | B7 | B8 CL3 | B8 CL3M |
| Carbon | 0.37 – 0.49% | 0.08% max | 0.08% max |
| Manganese | 0.65 – 1.10% | 2.00% max | 2.00% max |
| Phosphorus, max | 0.035% | 0.045% | 0.045% |
| Sulfur, max | 0.040% | 0.030% | 0.030% |
| Silicon | 0.15 – 0.35% | 1.00% max | 1.00% max |
| Chromium | 0.75 – 1.20% | 18.0 – 20.0% | 16.0 – 18.0% |
| Nickel | 8.0 – 11.0% | 10.0 – 14.0% | |
| Molybdenum | 0.15 – 0.25% | 2.00 – 3.00% |
| Grade | Size | Tensile ksi, min | Yield, ksi, min | Elong, %, min | RA % min |
| B7 | Up to 2-1/2 | 125 | 105 | 16 | 50 |
| 2-5/8 – 4 | 115 | 95 | 16 | 50 | |
| 4-1/8 – 7 | 100 | 75 | 18 | 50 | |
| B8 CL3 Class 1 | All | 75 | 30 | 30 | 50 |
| B8 CL3M Class 1 | All | 75 | 30 | 30 | 50 |
| B8 CL3 Class 2 | Up to 3/4 | 125 | 100 | 12 | 35 |
| 7/8 – 1 | 115 | 80 | 15 | 35 | |
| 1-1/8 – 1-1/4 | 105 | 65 | 20 | 35 | |
| 1-3/8 – 1-1/2 | 100 | 50 | 28 | 45 | |
| B8 CL2M Class 3 | Up to 3/4 | 110 | 95 | 15 | 45 |
Material | Specification | Standards | Size | Length |
ASTM A193 B8 CL3 Fasteners | IS BS ASTM | DIN, ISO, JIS, GB, IS, BS, ASTM | M 02 to M 160 | 3 mm to 200 mm |
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You’ll find ASTM A193 B8 CL3 Fasteners widely utilized in industries like chemical, petrochemical, oil and gas, and power generation, thanks to their exceptional resistance to corrosion and high temperatures. They are often used in pressure vessels, flanges, pipelines, and machinery where secure and dependable fastening is crucial. Their strength and durability make them ideal for applications in harsh environments, including exposure to acids, alkalis, and extreme weather conditions.
At Pengkumta Fasteners, we prioritize the safe and efficient packaging of ASTM A193 B8 CL3 fasteners. Each fastener is meticulously inspected and securely packaged in durable, protective materials to prevent damage during transit. Our packaging is designed to maintain the integrity and quality of the fasteners, ensuring they arrive in optimal condition. We offer customized packaging solutions to meet specific customer requirements, reflecting our commitment to excellence and customer satisfaction.
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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