Specification

TIANYU ASTM A216 Cast Carbon Steel RF End Y-Type Strainer: High-Strength Filtration for Industrial Media Systems

I. Product Overview

TIANYU ASTM A216 cast carbon steel RF end Y-type strainer is a precision filtration device designed for high-temperature, medium-pressure industrial pipelines. Featuring a Y-shaped structure and a cast carbon steel body, its core function is to intercept solid impurities (such as rust, welding slag, and particles) in media like water, steam, and oil, protecting downstream valves, pumps, and heat exchangers from wear or blockage. Its RF flange connection complies with international standards, fitting DN15-DN400 pipelines with working pressures up to 125LB/150LB. It is particularly suitable for high-temperature conditions and widely used in power, petrochemical, municipal heating, and industrial hydraulic fields.

II. Key Attribute Parameters

Specifications & Dimensions:
- Port diameter: DN15-DN400 (equivalent to 1/2″~16″), covering needs from small-diameter equipment interfaces to large industrial pipe networks;
- Structural dimensions: For DN50 (2″), length is 203mm, flange outer diameter 150mm, and sealing surface diameter 92mm (specific dimensions increase with diameter, e.g., DN100 has a length of 292mm and flange outer diameter 230mm).
Connection Standards:
- Flange connection: RF (raised face) flange compliant with ANSI B16.10. The number and size of bolt holes adapt to the diameter (e.g., DN50 has 4-19mm bolt holes, DN100 has 8-19mm), enabling direct connection to North American and international standard pipeline systems.
Material Properties:
- Body material: ASTM A216 cast carbon steel (WCB grade) with tensile strength ≥485MPa and yield strength ≥250MPa. It has excellent high-temperature resistance and can withstand long-term erosion by high-temperature media;
- Key components: Filter mesh is 304 or 316 stainless steel (rust-resistant, adapting to different media corrosion requirements); gaskets are carbon steel (ensuring sealing stability at high temperatures).
Operating Parameters:
- Working pressure: 125LB, 150LB (equivalent to 1.0MPa, 1.6MPa), suitable for medium-pressure industrial pipelines;
- Medium temperature: High-temperature conditions (-20℃ to 425℃), stably handling saturated steam, high-temperature hot oil, etc.;
- Applicable media: Industrial water, saturated steam, thermal oil, hydraulic oil, light oil, and other non-strongly corrosive media.
Standards & Certifications:
- Design standard: ASME B16.34 (valve design specification);
- Testing standard: API 598 (valve pressure testing specification);
- Certifications: ISO9001 quality management system, ISO14001 environmental management system;
- Warranty: 12 months (from the date of delivery).

Product Overview

III. Structural Features and Design Advantages

The combination of Y-shaped structure and cast carbon steel material gives the product multiple core advantages:

Efficient Filtration and Low Resistance:
The Y-shaped flow channel design creates directional eddies when media flows through, causing impurities to be adsorbed to the inner side of the filter mesh by centrifugal force. Filtration efficiency is 20% higher than traditional straight-through strainers; the inner wall of the flow channel is precision-polished, with a local resistance coefficient ≤2.8, reducing system pressure loss and lowering energy consumption of pump equipment.
High-Temperature and High-Pressure Adaptability:
The ASTM A216 cast carbon steel body undergoes high-temperature tempering, maintaining stable mechanical properties at 425℃ without plastic deformation risk. It far outperforms stainless steel in resisting strength attenuation at high temperatures, making it ideal for high-temperature scenarios such as steam pipelines and hot oil systems.
Convenient Maintenance Design:
The filter mesh is connected to the valve body via a flange. During maintenance, there is no need to disassemble the entire pipeline—simply open the top cover to remove the mesh for cleaning or replacement, reducing maintenance time by 40% compared to flange-type T-type strainers; the mesh edge is fixed by laser welding to prevent falling off at high temperatures.
Standardized Compatibility:
Flange dimensions and face-to-face lengths fully comply with ANSI B16.10, enabling direct replacement of same-spec imported brand products without adjusting pipeline layouts, reducing system upgrade costs.

IV. Manufacturing Processes and Quality Control

TIANYU relies on automated production lines and implements strict full-process quality control:

Raw Material Selection and Treatment:
ASTM A216 standard cast carbon steel ingots are selected, with chemical composition verified by spectral analysis (C≤0.30%, Mn≤1.00%, Si≤0.60%) to ensure mechanical properties meet standards; raw materials undergo flaw detection to eliminate internal shrinkage, cracks, and other defects.
Precision Casting and Machining:
- Valve bodies are cast using resin sand molding, with surface roughness ≤25μm and flow channel size error ≤0.5mm;
- Flange sealing surfaces are machined by CNC milling machines, with flatness error ≤0.05mm and roughness Ra≤12.5μm to ensure tight fit with pipeline flanges;
- Filter meshes are woven from stainless steel wires (mesh precision 10-100 mesh), stamped and formed, then argon arc welded to flange plates, with weld strength ≥300MPa.
Performance Testing and Inspection:
- Testing in accordance with API 598: Shell hydrostatic testing (1.5 times nominal pressure, 30-minute pressure holding without leakage); sealing testing (1.1 times nominal pressure, bubble leakage ≤1 per minute);
- High-temperature performance sampling: 1000 thermal cycle tests at 425℃, with no valve body deformation and sealing performance attenuation ≤5%.
Surface Treatment:
The cast carbon steel surface is sprayed with high-temperature anti-rust paint (dry film thickness ≥80μm), passing a 500-hour salt spray test to adapt to humid industrial environments.

Valve Details

V. Core Product Advantages

High-Temperature and High-Pressure Resistance: ASTM A216 cast carbon steel operates stably for a long time at 425℃ and 150LB pressure, suitable for high-temperature media such as steam and hot oil, with a service life 3 times longer than ordinary cast iron strainers.
Standardized Adaptability: Fully compliant with international standards such as ASME B16.34 and ANSI B16.10, it can be directly connected to European and American industrial pipeline systems without additional adaptation modifications, reducing engineering costs.
Efficient Supply Chain Response: Relying on automated production lines, orders of 1-10000 pieces can be delivered within 7 days, and orders over 10000 pieces can have negotiable delivery cycles, with a 100% on-time delivery rate to meet the needs of urgent projects.
Cost-Effectiveness Balance: Cast carbon steel material costs 30% less than stainless steel while maintaining high strength, making it suitable for large-scale industrial projects sensitive to costs (such as municipal heating pipe networks and large power plants).
Full-Process Quality Assurance: From raw material inspection to finished product testing, all comply with the ISO9001 system, with each device accompanied by a test report to ensure consistent performance.

Application

VI. Application Fields and Scenarios

Power Industry:
- Steam pipelines in thermal power plants: Filter rust and scale in steam to protect turbine nozzles;
- Boiler feed water systems: Intercept particles in feed water to prevent boiler tube scaling and blockage.
Petrochemical and Refining:
- Hot oil transportation pipelines: Filter carbides in thermal oil to protect hot oil circulation pumps;
- Light oil storage tank outlets: Intercept sediment at the bottom of tanks to avoid metering errors in flow meters.
Municipal and Industrial Heating:
- Central heating main networks: Filter welding slag and sediment in circulating water to prevent heat exchanger blockages;
- District boiler rooms: Filter impurities in high-temperature hot water to extend the service life of pipeline valves.
Industrial Hydraulic Systems:
- Hydraulic oil station inlets: Intercept metal debris in oil tanks to protect hydraulic pumps and servo valves;
- Machine tool cooling systems: Filter iron filings in coolant to prevent accelerated tool wear.
Food Processing Auxiliary Systems:
- Steam sterilization equipment: Filter impurities in steam to avoid contamination of food contact surfaces (with 316 stainless steel mesh);
- Hot oil jacketed pots: Filter impurities in thermal oil to ensure uniform heating.