Flanged equal tee is used for medium diversion in the main pipeline, merging of branch pipelines, and multi-channel connection of equipment. The three ports have the same diameter, the flow channel is smooth without diameter reduction, and when the medium passes through, the pressure loss is small and the flow distribution is uniform. The product can be produced by hot pressing, forging, casting, and other processes, and implements standards such as GB/T12459, GB/T9113, HG/T21635, ASME B16.9, ANSI B16.5, etc. Materials cover carbon steel, stainless steel, alloy steel, ductile iron, and plastic, and pressure covers PN6~PN100, Class150~Class1500. The flange connection eliminates on-site welding, making disassembly, assembly, and maintenance convenient, and is suitable for media such as clean water, steam, gas, oil products, sewage, and chemical fluids.
Overview
Flange equal-diameter tee is a T-shaped pipe fitting used for medium diversion and confluence in pipeline systems. The nominal diameters of all three ports are completely identical. Both ends and the branch port are equipped with flanges, and pipeline connection is achieved through bolts and sealing gaskets without on-site welding. The product flow channel is smooth without diameter reduction. When the medium passes through, pressure loss is small, flow distribution is uniform, and turbulence, scaling, and pipeline vibration are not easily generated. It can be produced by various processes such as hot pressing, forging, and casting, and complies with domestic and international standards such as GB/T12459, GB/T9113, HG/T21635, ASME B16.9, and ANSI B16.5. Optional materials include carbon steel, stainless steel, alloy steel, ductile iron, plastics, etc. Pressure coverage is PN6~PN100, Class150~Class1500. It is suitable for media such as clean water, steam, gas, oil products, sewage, and chemical fluids, and is used for branching, multi-line paralleling, and distribution in pipelines for municipal water supply and drainage, fire protection, HVAC, power, chemical industry, sewage treatment, food and pharmaceuticals, etc.
Key Features
Three-end equal-diameter flow design, with no diameter reduction and no throttling throughout the entire process. During diversion, pressure is balanced, flow is stable, and turbulence and pipeline shaking are reduced. The integrated flange structure enables welding-free quick installation. Bolts and gaskets directly connect to pipelines and valves, making disassembly, assembly, and maintenance convenient. It is suitable for working conditions requiring frequent maintenance or where hot work is not suitable on site. Products can be produced according to standards such as GB/T12459 and ASME B16.9. Diameter coverage is DN15-DN1200, pressure coverage is PN6-PN100 and Class150-Class1500, and materials can be selected from carbon steel, stainless steel, alloy steel, ductile iron, and plastics. Flange sealing surfaces are pasted with protective film before leaving the factory, carbon steel pipe fittings are sprayed with anti-rust oil, and stainless steel pipe fittings are treated with anti-oxidation isolation to reduce transportation collisions and corrosion.
Applications
Civil scenarios cover building water supply and drainage branching, central air conditioning HVAC circulation diversion, community fire main zoning, and domestic water pipe multi-line distribution. Municipal scenarios include urban municipal water supply network branching, heating pipeline diversion, rainwater and sewage network confluence, and municipal fire main branching projects. Industrial scenarios are suitable for chemical process pipeline diversion, petroleum and oil-gas transportation branching, power plant circulating water distribution, factory cooling system parallel pipelines, food and pharmaceutical clean diversion pipelines, and environmental protection sewage treatment confluence systems. It is also suitable for dense pipeline branching in machine rooms, multi-line connection at equipment inlet and outlet, outdoor open-air pipelines, buried main pipe branching, and adding branch lines during old pipeline renovation. It can adapt to normal temperature, medium-high temperature, medium-high pressure, and slight corrosion working conditions.
Specifications
The implemented standards are GB/T12459, GB/T9113, HG/T21635, ASME B16.9, and ANSI B16.5. The structural form is a standard T-shaped equal-diameter tee, and the diameters of the three ports are consistent. Diameter range is DN15-DN1200 (1/2 inch-48 inch), and wall thickness grades are SCH20, SCH40, SCH80, STD, XS, and XXS. Pressure grades are domestic standard PN6-PN100 and American standard Class150-Class1500. Commonly used materials include 20# carbon steel, Q235B, Q345B, 304, 316L stainless steel, 16Mn alloy steel, and UPVC/PPH plastics. Working temperature for carbon steel is -20℃~425℃. For other materials, please contact us for confirmation. Special pressure, non-standard dimensions, sealing surface forms, and surface treatment can be customized according to project requirements. Welcome to contact us to confirm the specific configuration.
Procurement & Delivery
The MOQ for conventional in-stock mainstream specifications is from 1 piece, including PN16/PN25 conventional pressure, carbon steel, and 304 stainless steel commonly used diameters, supporting emergency repair on construction sites and small replenishment orders. The warehouse regularly stocks standard in-stock specifications, including conventional PN10/PN16/PN25, carbon steel, and 304 stainless steel tees in commonly used diameters, shipped within 24 hours after order confirmation. The delivery time for non-standard customized orders is confirmed according to drawings and quantity. Please contact us to provide dimensions, material, pressure, and quantity so that we can assist with quotation. Packaging adopts graded protection: DN15-DN100 small pieces use bubble film plus hard cardboard boxes, DN125-DN400 medium diameters use multi-layer bubble film plus stretch film, and DN450 and above large diameters use solid wood pallets for fixation, steel strapping for locking, and full wrapping with waterproof film. We support customized export fumigation wooden pallets, waterproof packaging, and customized shipping marks, suitable for less-than-truckload, full-truckload, air freight, and sea freight.
Service & Support
Before sales, we provide free working condition selection, parameter matching, drawing verification, solution optimization, and budget quotation services. During sales, we synchronize production progress, quality inspection status, and shipping logistics information in real time. After sales, we provide installation guidance, use and maintenance suggestions, and troubleshooting answers. For large engineering projects, we can provide remote technical disclosure and full-process technical follow-up. Conventional genuine products are uniformly provided with a 12-month warranty. During the warranty period, for quality problems such as cracking, leakage, deformation, and material inconsistency caused by non-human damage, we support free replacement, free reissue, and bear round-trip logistics costs. We support seven-day no-reason return and exchange for unused standard products with intact packaging. After-sales response connects to the problem within 2 hours and provides a solution on the same day.
FAQ
What is the difference between a flanged equal tee and a reducing tee?
A flanged equal tee has three ports with completely identical diameters, only performing diversion and merging without changing the pipe diameter, with low flow resistance and stable flow, suitable for conventional pipeline branching. A reducing tee has different diameters for the main pipe and branch pipe, combining diversion and diameter reduction functions, suitable for working conditions that require reducing the branch pipe diameter.
Does a flanged equal tee require on-site welding?
No. Both ends of the product and the branch pipe are equipped with flange plates, relying on bolts and sealing gaskets to achieve pipeline connection, without the need for on-site welding, making disassembly and maintenance convenient, suitable for working conditions where hot work is not suitable or frequent maintenance is required.
What materials and pressure ratings are available for flanged equal tees?
Commonly used materials include 20# carbon steel, Q235B, Q345B, 304, 316L stainless steel, 16Mn alloy steel, UPVC/PPH plastic, etc. Pressure ratings cover national standard PN6-PN100 and American standard Class150-Class1500. For special materials and pressure ratings, please contact us for confirmation.
What is the minimum order quantity and delivery time for flanged equal tees?
The MOQ for mainstream specifications in regular stock is 1 piece, including PN16/PN25 regular pressure, carbon steel, and 304 stainless steel common diameters. The warehouse keeps standard stock available, shipping within 24 hours after order confirmation. The delivery time for non-standard custom orders is confirmed based on drawings and quantity; please contact us to provide dimensions, material, pressure, and quantity so we can assist with a quotation.
How are flange equal tees packaged and shipped?
Adopt tiered protective packaging: small items from DN15-DN100 use bubble wrap plus hard cardboard boxes, medium diameters from DN125-DN400 use multiple layers of bubble wrap plus stretch film, and large diameters of DN450 and above use solid wood pallets for securing, steel straps for locking, and full wrapping with waterproof film. Support customized export fumigation wooden pallets, waterproof packing, and customized shipping marks, suitable for less-than-truckload, full-truckload, air freight, and sea freight.
