Teerasil Fittings and Plates, located in Thailand, Bangkok, is a reliable manufacturer and supplier of top-notch Alloy Steel WP5 Buttweld Fittings. These fittings are designed for industries that demand high-temperature strength, corrosion resistance, and long-lasting reliability in critical piping systems. The company is well-regarded for its precision manufacturing, commitment to international standards, and a customer-centric approach. They provide leak-proof, dimensionally accurate, and durable buttweld fittings to sectors like oil and gas, petrochemical, power generation, chemical processing, and refineries. With cutting-edge production technology, rigorous testing, and strict quality control, Teerasil Fittings and Plates guarantees safe, efficient, and cost-effective piping solutions for challenging industrial operations 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 WP5 Buttweld Fittings are crafted from chromium-molybdenum alloy steel, which gives them impressive tensile and yield strength, high-temperature stability, and exceptional resistance to oxidation, sulfidation, and thermal fatigue. These fittings maintain their structural integrity, offer good weldability, and deliver consistent mechanical performance even in high-temperature and high-pressure environments, making them perfect for critical applications in tough service conditions.
| Grade | C | Mn | Si | S | P | Cr | Mo |
| A234 WP5 | ≤0.15 | ≤0.6 | ≤0.5 | ≤0.04 | ≤0.03 | 4-6 | 0.44-0.65 |
| Grade | Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation % |
| A234 WP5 | 415 – 585 | ≥205 | ≥20 |
Teerasil Fittings one of the largest suppliers of Alloy Steel WP5 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 WP5 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 WP5 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 WP5 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.
| O.D. or I.D. Diameter | Equivalent Decimal | Nominal Diameter | Typical Threads In Inch |
| 5/16 | 0.313 | 1/16 | 27 |
| 13/32 | 0.405 | 1/8 | 27 |
| 35/64 | 0.540 | 1/4 | 18 |
| 43/64 | 0.675 | 3/8 | 18 |
| 27/32 | 0.840 | 1/2 | 14 |
| 1-3/64 | 1.050 | 3/4 | 14 |
| 1-5/16 | 1.315 | 1 | 11-1/2 |
| 1-21/32 | 1.660 | 1-1/4 | 11-1/2 |
| 1-29/32 | 1.900 | 1-1/2 | 11-1/2 |
| 2-3/8 | 2.375 | 2 | 11-1/2 |
| 2-7/8 | 2.875 | 2-1/2 | 8 |
| 3-1/2 | 3.500 | 3 | 8 |
| 4 | 4.000 | 3-1/2 | 8 |
| 4-1/2 | 4.500 | 4 | 8 |
Alloy Steel WP5 Buttweld Fittings offer exceptional durability, making them ideal for high-pressure and high-temperature environments. Their superior resistance to corrosion, oxidation, and wear ensures longevity, even in harsh industrial conditions. The fittings provide excellent tensile and yield strength, ensuring structural integrity in critical applications. Their seamless design minimizes the risk of leaks and ensures efficient flow of fluids or gases. Easy to weld and install, these fittings reduce downtime during maintenance. Cost-effective and reliable, Alloy Steel WP5 Buttweld Fittings are a preferred choice for demanding industries like oil and gas, power generation, and petrochemicals.
| ASTM A234 WP5 Pipe Fittings (Grade WP5 To WP91) Tolerance | 90 Deg And 45 Deg Elbows And Pipe Tee | Reducer (Concentric/ Eccentric) & Lap Joint Stub End (Long / Short) | Pipe End Caps | |||
| Normal Pipe Size (NPS) Of ASME B16.9 | O. (Outside) D. (Daimeter) at Bevel | I. (Inside) D.(Daimeter) at End | Wall Thickness Of T | Center-to-End Dimension A ,C ,B | Over-all Length Of H | Over-all Length Of F |
| 1/2 to 2-1/2 | +0.06 | Not less than 87.5% of nominal thickness | +/- 0.06 | +/- 0.06 | +/- 0.12 | |
| -0.03 | ||||||
| 3 to 3-1/2 | +/- 0.06 | +/- 0.06 | +/- 0.06 | +/- 0.06 | +/- 0.12 | |
| 4 | +/- 0.06 | +/- 0.06 | +/- 0.06 | +/- 0.06 | +/- 0.12 | |
| 5 to 8 | +/- 0.06 | +/- 0.06 | +/- 0.06 | +/- 0.06 | +/- 0.25 | |
| 10 to 18 | +0.16 | +/- 0.12 | +/- 0.09 | +/- 0.09 | +/- 0.25 | |
| -0.12 | ||||||
| 20 to 24 | +0.25 | +/- 0.19 | +/- 0.09 | +/- 0.09 | +/- 0.25 | |
| -0.19 | ||||||
| 26 to 30 | +0.25 | +/- 0.19 | +/- 0.12 | +/- 0.19 | +/- 0.38 | |
| -0.19 | ||||||
| 32 to 48 | +0.25 | +/- 0.19 | +/- 0.19 | +/- 0.19 | +/- 0.38 | |
| -0.19 | ||||||
Yes, custom sizes are available for Alloy Steel WP5 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.
| STANDARD | 348H Pipe Fittings |
| EN | X5CrNiMo17-12-2 / X3CrNiMo17-13-3 |
| JIS | SUS 316L |
| BS | 316S11 / 316S13 |
| UNS | S34809 |
| WERKSTOFF NO. | 1.4546 |
| AFNOR | Z7CND17‐11‐02 |
| GOST | 03Ch17N14M3 / 03Ch17N14M2 |
You’ll find Alloy Steel WP5 Buttweld Fittings in a variety of settings, including boilers, heat exchangers, superheaters, steam pipelines, power plants, refineries, and petrochemical facilities. They’re also essential in chemical processing plants, high-pressure piping systems, and other industries where heat, pressure, and corrosive media resistance is crucial. Their blend of strength, reliability, and long service life ensures they perform continuously, safely, and efficiently in some of the most demanding industrial environments worldwide.
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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