Teerasil Fittings and Plates is a trusted manufacturer and supplier located in Thailand, Bangkok, specializing in high-quality Alloy Steel WP11 Buttweld Fittings. These fittings are essential for industries that require strength, corrosion resistance, and stability in high-temperature and pressure environments. Renowned for their precision engineering and commitment to international standards, the company prioritizes customer satisfaction by providing leak-proof, dimensionally accurate, and durable buttweld fittings tailored for the oil and gas, petrochemical, chemical processing, and power generation sectors. With state-of-the-art production facilities, rigorous inspections, and strict quality control measures, Teerasil Fittings and Plates guarantees safe, efficient, and cost-effective piping solutions for demanding industrial projects around the globe.
| Specifications | : | ASTM A234 / ASME SA234 |
| Size | : | 1/8” NB TO 48” NB. (Seamless & 100% X-Ray Welded, Fabricated) |
| Standards | : | ASME/ANSI B16.9, ASME B16.28, MSS-SP-43 |
| Thickness | : | Sch 5s, Sch 10s, Sch 40s, Sch 80s, Sch 160s, Sch XXS |
| Type | : | Seamless / Welded / Fabricated |
Alloy Steel WP11 Buttweld Fittings are crafted from chromium-molybdenum alloy steel, which delivers outstanding tensile and yield strength, reliable performance at high temperatures, and exceptional resistance to oxidation, sulfidation, and thermal fatigue. These fittings ensure dependable weldability, mechanical integrity, and consistent performance in high-pressure and elevated temperature applications, making them ideal for critical systems operating in harsh environments.
| Grade | C | Mn | Si | S | P | Cr | Mo |
| A234 WP11 | 0.05-0.2 | 0.3-0.8 | 0.5-1 | ≤0.030 | ≤0.030 | 1-1.5 | 0.44-0.65 |
| Grade | Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation % |
| A234 WP11 | 415-585 | ≥205 | ≥20 |
Teerasil Fittings one of the largest suppliers of Alloy Steel WP11 Buttweld Fittings in Bangkok, Thailand. We specialize in providing a wide range of high-quality, durable fittings for various industrial applications. Our inventory includes elbows, tees, reducers, couplings, and other essential fittings designed to offer exceptional corrosion resistance and strength. Alloy Steel WP11 is known for its cost-effectiveness and excellent mechanical properties, making it ideal for industries such as construction, chemical processing, and food processing. With a commitment to customer satisfaction, timely delivery, and competitive pricing, we are the trusted choice for Alloy Steel WP11 Buttweld Fittings in the Thailand.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Alloy Steel WP11 Buttweld Fittings from Teerasil Fittings offer exceptional corrosion resistance, especially in seawater and harsh environments. They are known for their high strength, durability, and resistance to pitting and crevice corrosion, ensuring long-lasting performance. We provide precise manufacturing, quality control, and reliable service for diverse industrial applications.
| ASTM A234 WP11 Fittings Temperature Ratings | Types Of Pressure Ratings Class | ||||
|---|---|---|---|---|---|
| Class 150# | Class 300# | ||||
| 1/4 – 1 (Inch) | 1 1/4 – 2 (Inch) | 2 1/2 – 3 (Inch) | |||
| (oF) | (oC) | ||||
| -20 to 150 | -29 to 66 | 300 | 2000 | 1500 | 1000 |
| 200 | 93 | 265 | 1785 | 1350 | 910 |
| 250 | 121 | 225 | 1575 | 1200 | 825 |
| 300 | 149 | 185 | 1360 | 1050 | 735 |
| 350 | 177 | 150 | 1150 | 900 | 650 |
| 400 | 204 | – | 935 | 750 | 560 |
| 450 | 232 | – | 725 | 600 | 475 |
| 500 | 260 | – | 510 | 450 | 385 |
| 550 | 288 | – | 300 | 300 | 300 |
Alloy Steel WP11 Buttweld Fittings offer numerous advantages, making them ideal for high-pressure, high-temperature applications. Their composition, featuring chromium and molybdenum, enhances their resistance to oxidation, corrosion, and wear, ensuring long-term durability. WP11 fittings have excellent weldability, strength, and thermal stability, which makes them suitable for demanding industries such as power generation, petrochemical, and oil & gas. They provide superior resistance to thermal fatigue and stress, reducing the risk of failure in extreme conditions. Additionally, WP11 Fittings offer minimal maintenance and extended service life, ensuring cost-effectiveness and reliable performance.
| Normal Size Of Pipe (DN) | Schedule Number | Outer Daimeter In inch millmeter | Wall Thickness inch millmeter | Mass lb/ft kg/m |
|---|---|---|---|---|
| 1/8 6 | 5S | 0.405 10.3 | … | … |
| 1/8 6 | 10S | 0.405 10.3 | 0.049 1.24 | 0.19 0.28 |
| 1/8 6 | 40S | 0.405 10.3 | 0.068 1.73 | 0.24 0.37 |
| 1/8 6 | 80S | 0.405 10.3 | 0.095 2.41 | 0.31 0.47 |
| 1/4 8 | 5S | 0.540 13.7 | … | … |
| 1/4 8 | 10S | 0.540 13.7 | 0.065 1.65 | 0.33 0.49 |
| 1/4 8 | 40S | 0.540 13.7 | 0.088 2.24 | 0.43 0.63 |
| 1/4 8 | 80S | 0.540 13.7 | 0.119 3.02 | 0.54 0.80 |
| 3/8 10 | 5S | 0.675 17.1 | … | … |
| 3/8 10 | 10S | 0.675 17.1 | 0.065 1.65 | 0.42 0.63 |
| 3/8 10 | 40S | 0.675 17.1 | 0.091 2.31 | 0.57 0.84 |
| 3/8 10 | 80S | 0.675 17.1 | 0.126 3.20 | 0.74 1.10 |
| 1/2 15 | 5S | 0.840 21.3 | 0.065 1.65 | 0.54 0.80 |
| 1/2 15 | 10S | 0.840 21.3 | 0.083 2.11 | 0.67 1.00 |
| 1/2 15 | 40S | 0.840 21.3 | 0.109 2.77 | 0.85 1.27 |
| 1/2 15 | 80S | 0.840 21.3 | 0.147 3.73 | 1.09 1.62 |
| 3/4 20 | 5S | 1.050 26.7 | 0.065 1.65 | 0.68 1.02 |
| 3/4 20 | 10S | 1.050 26.7 | 0.083 2.11 | 0.86 1.28 |
| 3/4 20 | 40S | 1.050 26.7 | 0.113 2.87 | 1.13 1.69 |
| 3/4 20 | 80S | 1.050 26.7 | 0.154 3.91 | 1.48 2.20 |
| 1 25 | 5S | 1.315 33.4 | 0.065 1.65 | 0.68 1.02 |
| 1 25 | 10S | 1.315 33.4 | 0.083 2.11 | 0.86 1.28 |
| 1 25 | 40S | 1.315 33.4 | 0.133 3.38 | 1.68 2.50 |
| 1 25 | 80S | 1.315 33.4 | 0.179 4.55 | 2.17 3.24 |
| 1-1/4 32 | 5S | 1.660 42.2 | 0.065 1.65 | 1.11 1.65 |
| 1-1/4 32 | 10S | 1.660 42.2 | 0.109 2.77 | 1.81 2.69 |
| 1-1/4 32 | 40S | 1.660 42.2 | 0.140 3.56 | 2.27 3.39 |
| 1-1/4 32 | 80S | 1.660 42.2 | 0.191 4.85 | 3.00 4.47 |
| 1-1/2 40 | 5S | 1.900 48.3 | 0.065 1.65 | 1.28 1.90 |
| 1-1/2 40 | 10S | 1.900 48.3 | 0.109 2.77 | 2.09 3.11 |
| 1-1/2 40 | 40S | 1.900 48.3 | 0.145 3.68 | 2.72 4.05 |
| 1-1/2 40 | 80S | 1.900 48.3 | 0.200 5.08 | 3.63 5.41 |
| 2 50 | 5S | 2.375 60.3 | 0.065 1.65 | 1.61 2.39 |
| 2 50 | 10S | 2.375 60.3 | 0.109 2.77 | 2.64 3.93 |
| 2 50 | 40S | 2.375 60.3 | 0.154 3.91 | 3.66 5.44 |
| 2 50 | 80S | 2.375 60.3 | 0.218 5.54 | 5.03 7.48 |
| 2-1/2 65 | 5S | 2.875 73 | 0.083 2.11 | 2.48 3.69 |
| 2-1/2 65 | 10S | 2.875 73 | 0.120 3.05 | 3.53 5.26 |
| 2-1/2 65 | 40S | 2.875 73 | 0.203 5.16 | 5.80 8.63 |
| 2-1/2 65 | 80S | 2.875 73 | 0.276 7.01 | 7.67 11.41 |
| 3 80 | 5S | 3.500 88.9 | 0.083 2.11 | 3.03 4.52 |
| 3 80 | 10S | 3.500 88.9 | 0.120 3.05 | 4.34 6.46 |
| 3 80 | 40S | 3.500 88.9 | 0.216 5.49 | 7.58 11.29 |
| 3 80 | 80S | 3.500 88.9 | 0.300 7.62 | 10.26 15.27 |
| 3-1/2 90 | 5S | 4.000 101.6 | 0.083 2.11 | 3.48 5.18 |
| 3-1/2 90 | 10S | 4.000 101.6 | 0.120 3.05 | 4.98 7.41 |
| 3-1/2 90 | 40S | 4.000 101.6 | 0.226 5.74 | 9.12 13.57 |
| 3-1/2 90 | 80S | 4.000 101.6 | 0.318 8.08 | 12.52 18.64 |
| 4 100 | 5S | 4.500 114.3 | 0.083 2.11 | 3.92 5.84 |
| 4 100 | 10S | 4.500 114.3 | 0.120 3.05 | 5.62 8.37 |
| 4 100 | 40S | 4.500 114.3 | 0.237 6.02 | 10.80 16.08 |
| 4 100 | 80S | 4.500 114.3 | 0.337 8.56 | 15.00 22.32 |
| 5 125 | 5S | 5.563 141.3 | 0.109 2.77 | 6.36 9.46 |
| 5 125 | 10S | 5.563 141.3 | 0.134 3.40 | 7.78 11.56 |
| 5 125 | 40S | 5.563 141.3 | 0.258 6.55 | 14.63 21.77 |
| 5 125 | 80S | 5.563 141.3 | 0.375 9.53 | 20.80 30.97 |
| 6 150 | 5S | 6.625 168.3 | 0.109 2.77 | 7.59 11.31 |
| 6 150 | 10S | 6.625 168.3 | 0.134 3.40 | 9.30 13.83 |
| 6 150 | 40S | 6.625 168.3 | 0.280 7.11 | 18.99 28.26 |
| 6 150 | 80S | 6.625 168.3 | 0.432 10.97 | 28.60 42.56 |
Yes, custom sizes are available for Alloy Steel WP11 Buttweld Fittings to meet specific requirements. We offer tailored solutions to ensure precise fit and performance for various applications. For more information, please contact us at sales@teerasilfittings.com.
You’ll find Alloy Steel WP11 Buttweld Fittings commonly used in boilers, heat exchangers, superheaters, steam pipelines, refineries, petrochemical units, and chemical processing plants. They’re also utilized in power plants and high-pressure piping systems where durability, heat resistance, and corrosion protection are crucial. Their unique blend of strength, efficiency, and long service life guarantees continuous, safe, and reliable operation even in the most challenging industrial conditions.
Get in touch with one of our Technical Sales Representatives to request a quote or get answers to any questions you may have.
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