Austenitic
Duplex Steel
Nickel Alloy
Cobalt Alloy

904L Elbow, ASTM A403 WP904L Stainless Steel Pipe Fitting

904L elbow, a type of stainless - steel pipe fitting. It complies with ASTM A403 standards and is made of WP904L stainless steel. The 904L alloy offers excellent corrosion resistance, especially in harsh chemical environments. This elbow is designed to change the direction of the pipeline by 90 degrees, ensuring a smooth flow of fluids or gases. Its high - quality stainless - steel construction makes it durable and long - lasting, suitable for various industrial applications where reliable pipe connections are required. With its precise manufacturing, it can be seamlessly integrated into existing piping systems.

Why Choose MTSCO Pipe Fitting?

MTSCO provides professional sales and technical support for 904L stainless steel elbows, which are designed and manufactured in accordance with ASTM, EN, and JIS standards. Our services are based on the following aspects:

Strategic manufacturing partnership

Production is managed by Hongdi. We have obtained ISO/PED/CRN/TS/M650 certification to ensure that materials meet standards and are traceable. Advanced CNC machining and hydraulic press systems can accurately manufacture stainless steel elbows.

Comprehensive quality assurance

A multi-stage inspection process, including PMI verification of raw materials, photo records of the production process and archiving, as well as 100% pre-delivery testing. Third-party inspections such as SGS/TUV/BV are acceptable.

Transportation plan guarantee

A customized packaging solution with reinforced wooden cases and real-time loading documents is adopted to ensure the safe delivery of goods. With a monthly production capacity of 200 tons, full-container orders can be efficiently delivered within 20 - 30 days.

Technical collaboration

Remote factory visit and audit through virtual reality (VR: https://www.720yun.com/t/12vk69iypfh?scene_id=100992757) simplify the project approval process. Customized services cover non-standard sizes, prefabricated components, and surface treatment of specific materials.

Performance Advantages of 904L Pipe Fitting:

The 904L Elbow is manufactured in accordance with ASTM A403 WP904L standard. The high chromium-nickel-molybdenum-copper alloy composition endows it with excellent corrosion resistance, showing outstanding performance in strong acid media such as sulfuric acid and phosphoric acid. The austenitic structure of this pipe fitting is stable and can be in long-term service under working conditions ranging from -50°C to 250°C. Its intergranular corrosion resistance and stress corrosion resistance are superior to those of conventional stainless steel materials.

The cold forming process combined with solution heat treatment ensures that the wall thickness uniformity reaches ±10% and the inner wall roughness Ra ≤ 1.6μm, effectively reducing fluid resistance. The ASTM A403 WP904L certification guarantees that the chemical composition, mechanical properties and non-destructive testing of the material comply with ASME B16.9 specification. It has good welding compatibility and can be directly matched with standard pipes.

The synergistic effect of the 19.0 - 23.0% chromium content and 4.0 - 5.0% molybdenum content in the 904L Elbow forms a dense oxide film, making it suitable for the high-purity medium transportation systems in the chemical and pharmaceutical industries.

Application Areas of 904L Pipe Fitting:

ASTM A403 WP904L stainless steel pipe fittings, especially 904L elbows, plays a crucial role in highly corrosive environments across various industries.

These pipe fittings are suitable for chemical processing systems handling sulfuric and phosphoric acids, offshore oil/gas extraction equipment exposed to high chloride environments, and the pipe networks of desalination plants.

They are applicable to pharmaceutical production reaction kettles and pulp/paper digesters.

They are also used in flue gas desulfurization units and acid gas pipelines, where the resistance to sulfide stress corrosion is of utmost importance.

Marine engineering applications include ballast water systems and heat exchangers operating in seawater environments. The pitting resistance equivalent number of this material (PREN >35) ensures its reliability in condensate pipelines of petrochemical refineries and industrial wastewater treatment facilities.