A double-branch tee (Y-type tee) is a key fitting in industrial piping systems, used to achieve medium diversion, confluence, and bypass switching. The product adopts an integrated hot-press forming process and a streamlined inclined structure design. Compared with traditional right-angle tees, the fluid channel is smoother, which can effectively reduce pipeline resistance and pressure loss, and there is no internal dead corner for material accumulation, completely solving the industry problems of easy blockage, residual accumulation, and retention when conveying powder, granular, and viscous media. The product covers a nominal diameter range of DN15-DN800, supports customization of mainstream angles such as 45°, 120°, 135° as well as non-standard angles, is compatible with multiple materials including carbon steel, stainless steel, alloy steel, and duplex steel, covers all pressure ratings from low pressure, medium pressure to high pressure, and is produced strictly in accordance with international standards such as Chinese national standards (GB), American standards (ASTM/ANSI), and German standards (DIN). It supports multiple connection methods including butt welding, socket welding, threaded, and flanged connections, and is suitable for water, oil, gas, steam, powder, and acid-alkali corrosive media. It is widely used in petrochemical, power and thermal, gas municipal, sewage treatment, mining powder, HVAC, and marine industries. The factory has sufficient stock, supports small trial orders and large batch customization, and every product undergoes strict pressure testing and non-destructive flaw detection before leaving the factory. With stable quality and complete warranty, it is the preferred fitting for industrial pipeline diversion and confluence renovation as well as new construction projects.
Overview
The double-branch tee, also known as a Y-type tee, is a core diverting and converging pipe fitting in industrial piping systems. The product is manufactured using an integrated hot-press forming process, featuring a streamlined inclined structural design. Compared with conventional right-angle tees, it provides a smoother fluid passage, effectively reduces pipeline resistance, minimizes pressure loss, and has no internal dead zones where material can accumulate, thoroughly solving the industry-wide problem of clogging and residual buildup when conveying powders, granules, and viscous media. The product covers nominal diameters from DN15 to DN800, supports mainstream angles of 45°, 120°, and 135° as well as custom non-standard angles, and is compatible with a variety of materials including carbon steel, stainless steel, alloy steel, and duplex steel. It covers all pressure ratings—low, medium, and high—and is manufactured in strict accordance with international standards such as Chinese national standards (GB), American standards (ANSI/ASME), and German standards (DIN). It supports multiple connection methods including butt welding, socket welding, threaded, and flanged connections, and is suitable for water, oil, gas, steam, powders, and acid-alkali corrosive media. It is widely used in industries such as petrochemical, power and thermal energy, municipal gas, sewage treatment, mining powder handling, HVAC, and marine applications.
Key Features
The double-branch tee is manufactured using an integrated hot-press forming process with a streamlined Y-shaped flow channel design. Fluid pressure drop is reduced by more than 30% compared with right-angle tees, and there are no internal dead zones where material accumulates, so powder materials are less likely to remain trapped and cause clogging. The fitting has high overall strength, is pressure- and impact-resistant, and is not prone to cracking or leakage. Materials cover carbon steel, stainless steel, alloy steel, and duplex steel, with a complete range of pressure specifications to meet the requirements of various operating conditions. In addition, the product supports non-standard customization, including special angles, reducing sizes, and eccentric configurations, and provides OEM private-label services, enabling flexible adaptation to a wide range of engineering requirements.
Applications
The double-branch tee is suitable for pipeline operating conditions that require flow diversion or convergence and where medium accumulation and clogging must be avoided. In the petrochemical industry, it is used in process pipelines for crude oil, acid-alkali solvents, and similar media; in the power and thermal energy industry, it is used in high-temperature steam and heat-transfer oil circulation networks; in the mining and building materials industry, it is used for pneumatic conveying of coal powder and mineral powder, solving the problem of powder clogging in pipelines. At the same time, it is also suitable for municipal gas distribution, sewage treatment sludge conveyance, building HVAC water circulation, ship and offshore platform pipelines, and clean fluid conveyance in food and pharmaceutical applications. For high-temperature, high-pressure, corrosive media, and particle slurry pipelines, the double-branch tee is the preferred choice. It should be noted that this product is not suitable for operating conditions involving severe impact or strong external squeezing forces. Compared with ordinary straight tees, it offers distinct advantages in powder conveying and high-speed fluid pipeline scenarios.
Specifications
The double-branch tee is available in standard nominal diameters from DN15 to DN800, with a maximum custom size of DN1200; mainstream angles include 45°, 120°, and 135°, with custom non-standard angles also supported. Pressure ratings cover Chinese national standard PN10–PN100 and American standard Class150–Class900; wall thicknesses include STD, XS, XXS, SCH40, SCH80, and SCH160. Applicable temperature ranges: carbon steel from -20°C to 425°C, stainless steel from -40°C to 450°C, and plastic-lined versions from -10°C to 100°C. Connection methods include butt welding, socket welding, threaded, and flanged connections. Applicable media include water, oil, steam, powders, and acid-alkali corrosive media. Governing standards include GB/T12459, GB/T13401, ASME B16.9, and others. Wall thickness and straight-pipe section length can be adjusted according to customer requirements to suit various industrial piping systems.
Procurement & Delivery
For the double-branch tee, standard off-the-shelf products have a minimum order quantity of 1 piece, making it convenient for project maintenance and replacement parts as well as sample orders from foreign trade customers. Ordinary non-standard and reducing configurations have a minimum order quantity of 5 pieces; special products such as large-diameter, high-pressure, heavy-wall, special alloy steel, and duplex steel fittings have a minimum order quantity of 10 pieces. Mixed-specification consolidated container loading is supported, and both small trial orders and medium-to-large batch orders are accepted. Stock items can be prepared and shipped within 24–48 hours; ordinary non-standard customized products have a production lead time of 3–7 working days; customized fittings involving large diameters, high-pressure heavy walls, special materials, or special anti-corrosion treatment have a production lead time of 7–15 working days. Large-volume full-container export orders can be coordinated with the factory for priority scheduling and expedited delivery. For packaging, small-diameter products are wrapped in bubble film and packed in rigid cartons; medium and large diameters are wrapped in waterproof film plus woven bags; export orders use fumigated or fumigation-free solid wood pallets with reinforcement, pipe ends are fitted with dust-proof plugs, desiccant is placed inside the packaging for sea freight, and shipping marks, batch numbers, and logos can be printed as required.
Service & Support
All products undergo appearance inspection, hydrostatic pressure testing, and material verification before leaving the factory. Products carry an overall warranty of 12 months, and quality issues not caused by improper use are supported with return or exchange processing. We provide customers with free technical guidance on pipeline selection, operating-condition matching, and installation and usage, and answer questions regarding pipeline system design and installation. Foreign trade orders can be provided with actual shipping photos and customer inspection support is available. Customer service responds to inquiries 24 hours a day, promptly handling order questions and quality feedback. For large-scale engineering projects, dedicated technical liaison can be provided, with full follow-up on post-order issues to ensure stable project operation.
FAQ
What is the difference between a double-branch Y-type tee and a regular straight tee?
The Y-type tee has a smooth flow path, low resistance, no dead corners, and is not prone to material accumulation or pipe blockage, making it more suitable for powder and high-speed fluid applications. In contrast, the regular straight tee has a more abrupt flow path change, which can easily cause turbulence and material buildup.
Can you produce export products compliant with American and European standards?
Yes, we can. We support production according to international standards such as ASME, DIN, and JIS, and can provide complete export documentation, including material certificates, inspection reports, and more.
Can you make non-standard products with different diameters or special angles?
Yes, we can. We support non-standard customization according to drawings, samples, or technical parameters, including structures with special angles, different diameters, eccentric configurations, extended straight pipe sections, and more.
Can you provide flaw detection and material reports?
Yes, we can. Each batch of products can be supplied with a full set of inspection reports, including material certificates, hydrostatic pressure test reports, non-destructive flaw detection reports, and more.
What is the minimum order quantity? Is mixed batch ordering allowed?
Standard stock items have a minimum order of 1 piece, non-standard products require a minimum of 5 pieces, and special materials or large-diameter products require a minimum of 10 pieces. Mixed batches with multiple specifications are supported for consolidated container loading, making it convenient for your procurement.