Specification

TIANYU Steel Fabricated Butt-Welded T-Type Strainer

I. Product Overview

TIANYU Steel Fabricated Butt-Welded T-Type Strainer is a high-efficiency impurity filtration device designed for industrial fluid pipelines. Using a fabricated structure (assembled from preformed components) and a T-type flow channel, it efficiently traps solid particles in fluids to protect downstream equipment—such as pumps, valves, heat exchangers, and precision instruments—from wear or blockage. Available in materials like Wpb (carbon steel), SS304, and SS316 (stainless steel), it adapts to diverse media (water, oil, steam, and mild corrosives) and is widely used in petroleum, chemical, power, and municipal systems as a critical component for maintaining pipeline cleanliness.

II. Key Attribute Parameters

Size Range: Nominal diameter (DN) spans DN15 to DN1000, covering small-caliber precision lines (e.g., instrument pipelines) and large industrial main pipelines (e.g., power plant steam mains).
Pressure Class: 150lb to 900lb, with maximum operating pressure varying by grade—15kgf/cm² for low-pressure models and 30kgf/cm² for high-pressure models—meeting medium to high-pressure system requirements.
Connection Type: Butt-welded ends, ensuring seamless integration with pipelines. This design reduces fluid resistance, minimizes leakage risks, and enhances overall pipeline integrity compared to flange connections.
Material Specifications:
- Body & Components: Fabricated from Wpb (carbon steel), SS304, or SS316. Wpb is cost-effective for neutral fluids (water, oil); SS304/SS316 offers superior corrosion resistance for acidic/alkaline or high-purity media.
- Filter Screen: 304 stainless steel woven or perforated mesh, featuring high tensile strength (≥520MPa) and corrosion resistance, ensuring durability under fluid impact.
- Sealing Elements: Asbestos-based gaskets or Buna-N O-rings, providing reliable sealing under high temperature and pressure.
Operating Conditions:
- Media: Water, oil, steam, and mild corrosive fluids.
- Temperature: -20℃ to 350℃, compatible with both low-temperature and high-temperature (e.g., steam) environments.
Testing Standards: Complies with API 598 and ANSI B16.34. Hydrostatic testing is performed at 1.5 times the nominal pressure (e.g., 22.5kgf/cm² for 150lb models) to verify pressure resistance and leak tightness.

Product Overview

III. Feature Description

Fabricated Structure Advantage: Unlike cast strainers, the fabricated design (assembled via welding pre-cut components) allows for larger sizes (up to DN1000) and better structural uniformity—critical for high-pressure pipelines where casting defects (e.g., porosity) could cause failure.
T-Type Flow Channel Efficiency: The T-shaped flow path directs fluid into a 90° turn, using inertia and gravity to push impurities toward the filter screen. This design increases particle capture rate by 15-20% compared to straight-through strainers, ensuring more thorough filtration.
Butt-Welded Reliability: Butt-welded ends create a smooth, continuous pipeline connection with no flange gaps, reducing fluid turbulence and pressure loss (≤3% of system pressure). This minimizes energy waste and prevents 杂质 from re-entering the flow stream.
Easy Maintenance: The top cover features a quick-release flange, allowing technicians to remove and clean the filter screen without disassembling the entire pipeline. This cuts maintenance time by 40-60% compared to strainers with fixed covers.

IV. Manufacturing Process

TIANYU’s T-Type Strainer is produced using a precision fabricated process, ensuring consistency and performance:

Material Preparation: Steel plates/pipes (Wpb, SS304, or SS316) are cut to exact dimensions using CNC cutting machines, ensuring component fit during assembly.
Structural Welding: The T-shaped body, inlet/outlet pipes, and cover flange are welded using TIG (Tungsten Inert Gas) welding for SS304/SS316 or MIG (Metal Inert Gas) welding for Wpb. Welds are polished to a smooth finish to reduce fluid resistance and prevent corrosion.
Filter Screen Fabrication: 304 stainless steel sheets are perforated or woven into mesh with uniform apertures (customizable by particle size requirements). The screen is then formed into a basket shape and welded to a support frame for stability.
Precision Machining: Welded surfaces (e.g., cover mating faces) are machined to tight tolerances (±0.05mm) to ensure proper sealing. Butt-weld ends are beveled (30-37°) to match pipeline welding standards.
Quality Validation: Each strainer undergoes hydrostatic testing (1.5× nominal pressure, 30-minute hold) to check for leaks. Welds are inspected via ultrasonic testing to ensure no cracks or inclusions.

Valve Details

V. Product Advantages

Superior Filtration Performance: The T-type flow channel and 304 stainless steel screen capture over 95% of particles larger than the screen aperture (e.g., 98% of ≥0.1mm particles for 100-mesh screens), significantly reducing downstream equipment wear and extending service life by 30-50%.
Durable and Cost-Effective: Fabricated construction eliminates casting weaknesses, ensuring a service life of 8-10 years under normal conditions. Wpb models offer high 性价比 for neutral fluids, while SS304/SS316 options reduce replacement costs in corrosive environments.
Low Energy Loss: Butt-welded ends and smooth internal surfaces minimize pressure drop (≤5% of system pressure), reducing pump load and saving 3-8% in long-term energy consumption compared to strainers with flange connections.
Easy Installation & Maintenance: Butt-welded ends integrate seamlessly with pipeline welding processes, requiring no additional gaskets. The quick-release cover allows screen cleaning in 15-30 minutes, reducing unplanned downtime.

Application

VI. Product Applications

Petrochemical Industry: In crude oil and refined product pipelines, it filters rust, welding slag, and catalyst particles to protect pumps, flow meters, and reactor feed lines—ensuring stable refining and chemical processing.
Power Sector: In thermal power plant steam pipelines and boiler feed systems, it traps scale and metal debris, preventing turbine nozzle blockages and maintaining heat exchanger efficiency.
Municipal Engineering: In urban water supply and heating networks, it removes sediment and pipeline corrosion products, protecting valves, meters, and heat exchangers to ensure consistent water/heat delivery.
General Industrial Systems: Used in factory hydraulic lines, fuel pipelines, and cooling systems to filter impurities in hydraulic oil, diesel, and coolant—avoiding valve jamming and pump failure to keep production lines running.