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ASME B16.9 Butt Weld Concentric Reducer Seamless concentric reducer for butt welding Sch40 (Std) weight wall thickness Made of black ASTM A234 WPB carbon steel material Conforms to the ASME B16.9 standard for butt weld fittings. Buttweld Reducers are one of the many types of fittings that can be used to control the flow within a piping system. In a piping system, there are two major types of reducers: concentric reducers and eccentric reducers. What is a Concentric Reducer? A buttweld concentric reducer is a type of pipe fitting designed to connect pipes of differing diameters in a straight line. It features a symmetrical design where the center axis of the inlet and outlet pipes align, resulting in a smooth transition between the two pipe sizes.This is an important feature that distinguishes it from an eccentric reducer. Concentric Reducer Design and Construction Concentric reducers typically have a conical shape, with one end having a larger diameter than the other. The tapering transition allows for a gradual reduction in pipe diameter, minimizing turbulence and pressure losses within the piping system. These reducers are commonly manufactured using materials such as carbon steel, stainless steel, and various alloys, ensuring durability and corrosion resistance. Concentric Reducer Applications: Concentric reducers find widespread applications across various industries, including: 1. Chemical Processing: Used in chemical plants to connect pipelines carrying different chemicals or fluids. 2. Oil and Gas: Employed in pipelines for crude oil, natural gas, and refined petroleum products. 3. Water Treatment: Utilized in water distribution systems to transition between pipes of different sizes. 4. HVAC Systems: Integrated into heating, ventilation, and air conditioning systems for ductwork modifications.

Minimum Order: 1 bags

GOST 17376 Buttweld Tee Approved by GOST-R, our seamless buttweld pipe tees have been exported to Russia, Belarus, Ukraine, Kazakhstan, Uzbekistan, etc. Now, our company has become the designated supplier of the National Iranian Oil Company, Abu Dhabi National Oil Company, and Petrobras. GOST Butt Weld Pipe Fittings are pipe fittings that are manufactured according to the GOST standards and are used to connect, redirect, and control the flow of fluids and gases within a piping system. These buttweld fittings are primarily designed for welding onto the pipe using a butt-welding process, ensuring a strong and leak-proof joint. Buttweld Pipe Tee Types: According to branch diameters and functions there are: Equal Tee: Three branches of tee have same diameters. Also named as Straight Tee. Reducing Tee: The branch diameter is smaller than main diameter. According to the connection types are: Butt Weld Tee Socket Weld Tee Threaded Tee. According to material types there are: Carbon Steel Pipe Tee Alloy Steel Tee Stainless Steel Tee According to production process types there are: seamless tee welding tee

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Seamless reducing tee fitting for butt welding Butt weld tee dimensions range from 1/2”, 1”, 1 1/2”, 2′, 3”, 4”, 6”, 8”, 10”, 12”, 14”, 16”, 24”, and up to 48” (From DN 15 to DN 1200). Thickness class ranges from SCH 10, SCH 20, SCH 40, SCH STD, SCH 80, SCH XS to SCH 160. Steel Reducing Tee / Reducer tee pipe fittings: The branch diameter is smaller than the main line diameter. Tee reducer is usually described as NPS diameters in 4” x 4” x 3”, 4” is the main line pipe diameter, and 3” is the reducing branch. Reducing tee is used more than the equal tee since it has more functions and is available for more environments. Butt weld reducing tee (BW Tee) Ends in plain or beveled, connected by butt welding process. It could bear higher pressure than the other connection types. Butt weld tee dimensions shall be specified in pipe NPS (DN) and thickness in schedule. Available in Multiple Standards Carbon steel buttweld tee material: ASTM A234 WPB, WPC; MSS SP-75 WPHY-42, WPHY-46, WPHY-52, WPHY-56, 60, 65 and 70. Alloy steel buttweld tee material: ASTM A234 WP1, WP5, WP9, WP11, WP22, WP91 Stainless steel buttweld tee material: ASTM A403, ASTM A270,ASTM A182,DIN1.4306、DIN 1.4401、DIN 1.4404 Applications of carbon steel buttweld reducing tee: • Oil and gas transmissions • Petroleum and Oil refining • Water treatment systems • Chemical Industries • Sanitary tubing • Power stations • Machines and equipment • Heat exchanger REDUCING TEES, BUTT WELD FITTINGS ASTM A403 / A815 ASME B16.9

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It connects pipes of the same diameter. The branch direction of the pipe is perpendicular to the main pipe. The wall thickness range is SCH5S-XXS. For seamless tee fittings, the size range is 1/2”–24” (DN15–DN600), and for welded tee fittings, the size range is 1/2”–48” (DN15–DN1200). It is made of carbon steel, stainless steel, duplex steel, or special alloy steel. Available in Multiple Standards We supply Buttweld Equal Tees in: ASME B16.9 ASTM A234 WPB / WPC / WP11 / WP22 ASTM A403 WP304 / WP316 EN10253 / DIN2605 / JIS B2311 Applications of Buttweld Equal Tee Our Buttweld Equal Tees are commonly used in: Oil & Gas Pipelines Chemical Processing Plants Boiler & Pressure Vessel Systems Water Supply Systems Shipbuilding & Offshore Engineering Power Generation Plants These buttweld tees ensure efficient flow distribution, making them vital components in both high-pressure and high-temperature environments. Rayoung–A leading Butt Weld pipe fittings, carbon steel Butt Weld Reducer, butt weld elbow, butt weld tee, butt weld pipe elbow, butt weld cap & butt weld reducer manufacturer, exporter & wholesaler in China.

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The ASTM A234 WPB buttweld Tee is manufactured using seamless or welded pipes that conform to the ASTM A106 or ASTM A53 specifications. The buttweld tee fitting is designed to withstand high-pressure applications and is ideal for use in the oil and gas, chemical processing, and power generation industries. Buttweld Pipe Tee is a type of pipe fitting that is T-shaped, having two outlets at 90° to the connection to the main line. It is a short piece of pipe with a lateral outlet. Pipe Tee is used to connect pipelines with a pipe at a right angle to the line. Pipe Tees are widely used as pipe fittings. Standards : ASME / ANSI – B 16.9, ASTM A403 – ASME SA403, ASME B16.9, ASME B16.25, ASME B16.28, MSS SP-43. Size: 1/2″NB TO 48″NB IN Thickness : Schedule 5S, 10S, 20S, S10, S20, S30, STD, 40S, S40, S60, XS, 80S, S80, S100, S120, S140, S160, XXS and etc. Form: Equal Tee, Unequal Tee, Reducing Tee, Barred Tee, Lateral Tee. Standard: ASME B16.9, SH3408, HG/T21635, HG/T21631, SY/T0510 Size: 1/2″, 1″, 2″, 3″, 4″, 6″, 8″, 10″, 12″, 16″, 20″, 24″ to 60″ Schedule: Sch 20, STD, Sch 40, XS, Sch 80, Sch 100, Sch 120, Sch 140, Sch 160, XXS End: Plain ( PE) or Bevel (BE) Surface: Blasting and Painting, PE Coating, Hot Dip Galvanized.

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Lap joint flanges are available in many sizes and classes; they are also suitable for elevated temperatures and pressures. Generally, a lap joint flange can be used for the same applications as a welding neck flange. Lap joint flanges are a type of flange popular in both piping and duct system design. Lap Joint flanges are sometimes referred to by other names, including: Stub end flange Loose flange Backing flange Vanstone and Backing Ring A lap joint flange (LJF) is an assembly of two elements involving a stub end and a lap joint ring flange (also called a ‘lap joint flange’). To be technically correct, the stub end is not part of a lap joint flange. However, a lap joint flange is always used in conjunction with a stub end, so both parts are often collectively referred to as a ‘lap joint flange’. The lap joint flange has no sealing face; only the stub end has the sealing face. Lap joint flanges are available in many sizes and classes; they are also suitable for elevated temperatures and pressures. Generally, a lap joint flange can be used for the same applications as a welding neck flange. The advantages of the lap joint flange design are: Well-suited for corrosive applications. Requires only a single full penetration butt weld. Only the stub end has contact with the process medium It can be easily adjusted to align with the mating flange (the flange can be rotated until the bolt holes align). It is available in almost all pipe diameters. Ideal for systems where frequent disassembly of the flange is required e.g., when cleaning or inspection is required. There are some limitations on the lap joint flange’s usage, mostly due to its bulkier multiple-component design. Lap joint flanges are not suitable for small-sized piping. ASME Standards Dimensions and tolerances for lap joint flange stub ends are outlined in the ASME B16.9 standard. Note, this differs from the usual ASME B16.5 standard because a stub end is classified as a pipe fitting, not a flange.

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Socket Weld Flanges are ideal for both applications as well as high-pressure applications. They have the ability to withstand much higher pressures than other styles of flange, making them suitable for nearly any application airtight connection between pieces of piping or tubing. Socket Weld Flange A socket weld flange, simplified as SW flange, has a recessed area (like a shoulder) in the flange bore. This shoulder serves as a guide to set the depth of the pipe that is inserted into the flange. A socket welding flange is initially designed for a high-pressure, small-diameter piping system. How to Use Insert the pipe end into the socket weld flange until the pipe bottom touches the shoulder area, pull back 1.6mm (1/16”) distance of the inserted pipe, then do fillet welding. The point is to create an expansion gap (1 fillet weld) between the flange and the pipes or fittings. Socket Welded Flange Face Types Socket welded flange face types, including RF type and RTJ type, are used with other types of welding flanges (slip on, weld neck, or blind flange). Advantages 1. Socket weld flange could replace a threaded flange to minimize the risk of leakage. 2. No need to bevel before welding. 3. Welding work outside of the pipe will not penetrate the pipe bore 4. It offers the same internal pressure capacity as slip-on flanges while improving fatigue resistance.

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Threaded flanges are available in sizes up to 4 inches and multiple pressure ratings, however, they are used, mostly, small size piping in low pressure and low-temperature applications. In most refineries, manufacturing shipyards, and facilities, the highly explosive nature of the materials moved through the pipeline prohibits welding. A threaded flange is a good option in this environment when you assemble pipelines. Application The common ways you could use these flanges are: Useful in highly explosive areas Useful in applications where it is hazardous to do welding Flanges are highly economical and help save time Useful in the piping applications of small diameter Can be fitted to various pipe sizes without the need for welding Useful in situations where extreme pressure is present, and post-weld treatment is not an option

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Blind Flange A blind flange is a solid steel piece with no bore (interior diameter) and can used for isolating a pipe, valve, or pressure vessel. The ASME B16.5 standard details the dimensions and tolerance requirements for blind flanges. Key features: Ensures a leak-proof, secure seal Compatible with slip-on or weld neck flanges Can be customized with NPT threads or central bore holes Available with raised face (RF), flat face (FF), or ring joint (RTJ) connections. Suitable for high-pressure and temperature applications Common uses: Oil and gas industry: Isolating pipe sections for maintenance or expansion Water treatment plants: Closing inactive lines Chemical and pharmaceutical industries: Providing safe, hygienic seals Pressure testing: Sealing pipes during integrity checks Modular industrial systems: Allowing future pipe modifications Blind flanges are essential for durable, reliable, and flexible sealing in industrial piping system

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Plate flanges have a gasket surface that’s in the same area as the bolting circle face. They are commonly used in applications where the mating flange or flanged fitting is made from a casting. At Rayoung, we offer carbon steel and stainless steel plate flanges in a variety of sizes, thicknesses, and standards, ensuring that we meet your project needs. What Are Plate Flanges? Plate flanges start as flat sheets of steel. They are usually cut from carbon steel or stainless steel plates. After cutting, workers machine them to exact sizes. This includes drilling the bolt holes and the center opening. Unlike forged flanges, these do not undergo high-pressure shaping. They simply begin as a flat piece of metal. Since they aren’t forged, these flanges are cheaper to make. The production process is much simpler. Most people weld them directly onto the pipe. This is why they are often called “welded plate flanges.” These flanges are perfect for low-pressure jobs. You don’t need heavy-duty strength for these systems. They typically handle pressures up to 300 psi. You will commonly see them in water lines, gas pipelines, and general factory setups. Size range: 1/2″-24″, 24″-60″, customized dimension Pressure: America Series: Class 150, Class 300, Class 600, Class 900 , Class 1500, Class 2500. Europe Series: PN6, PN10, PN16, PN25, PN40, PN63, PN100, PN160, PN250, PN320, PN400. Flange Facing Types America Series: Flat face(FF),Raised face(RF),Tongue(T),Groove(G),Female(F),Male(M) , ,Ring type joints face(RJ/RTJ) Europe Series: Type A(Flat Face),Type B(Raised Face),Type C(Tongue),Type D(Groove),Type E(Spigot),Type F(Recess),Type G(O-Ring Spigot),Type H(O-Ring Groove) Material Carbon steel: ASTM A105,ASTM A105N,GB 20,C22.8. Alloy steel: ASTM/ASME A182 F1-F12-F11-F22- F5-F9- F91 Stainless steel: ASTM/ASME A182 F304-304L-304H-304LN-304N ASTM/ASME A182 F316-316L-316H-316LN-316N-316Ti ASTM/ASME A182 F321-321H, F347-347H Low-temperature steel: ASTM/ASME A350 LF2. High performance steel: ASTM/ASME A694 F42 , F52, F56, F60, F65, F70

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Standards: ASME B16.5, ANSI B16.47, EN1092-1, JIS B2220, DIN 2576. Pressure Classes: Class 150, 300, 600, 900, 1500, 2500; PN6 to PN160. Materials: Carbon Steel (A105, A350 LF2), Stainless Steel (F304/304L, F316/316L), Alloy Steel. Quality Guarantee for Large Projects: We understand the requirements of terminal users in the Oil, Gas, and Power industries. Every Slip-On flange undergoes 100% visual and dimensional inspection. Types of Slip-On Flanges and Their Applications SO flanges are available in two main types, each designed to cater to specific requirements and applications within piping systems: Standard Slip-On Flanges: Standard or raised-face SO flanges have a raised face on the sealing surface. They are highly suitable for low-pressure applications where the bolt- tightening force can compress the gasket adequately to prevent leakage. Lap Joint Slip-On Flanges Lap joint SO flanges have a flat face with a separate backing flange. They are commonly used in systems requiring frequent dismantling, thermal expansion, or contraction applications. Cost-Effectiveness: Genera , lly, slip-on flanges are more cost-effective than other types of flanges, such as weld neck flanges, due to their simpler design and installation process. Material: They can be made from various materials, including carbon steel, stainless steel, and other alloys, depending on the application requirements. Limitations: While slip-on flanges are versatile, they may not be suitable for high-pressure applications due to the potential for leakage at the weld joint. Slip On Flange vs Weld Neck Flange The strength for internal pressure of the Slip-On Flange is two-thirds of Weld Neck Flange. Durability life is 1/3 of the WN flange. 2 fillet welds are required for the SO flange, one inside and one outside of the flange. A space shall be reserved between the end of the pipe and the end of the flange during welding work, to avoid damage to the flange face. The slip-on flange has to connect with a pipe first, then connect to a fitting. (Combination of flange+elbow, or flange+tee not available, since the fittings are not in a straight end, it can not slide completely into the flange bore. ) Slip-on flanges are usually cheaper than Weld-Neck flanges (welding neck flange), which is why many customers prefer to choose them. It is one of the commonly used flanges for low-pressure, medium-temperature piping systems. On the other hand, since the flange bore is larger than the pipe diameter, it usually requires more welding work than the other flanges. So the durability is not as long as the welding neck flange; all of these factors should be considered before choosing the right flange.

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The forged steel flanges are suitable for the connection of steel pipes conveying mediums such as steam, oil, air, and water. They are widely used in the oil gas Chemical industry and Shipbuilding. The forged flanges mainly include Welding Neck, Blind, Slip-on, Lap-Joint, Socket ,Blind and Plate flange type. Standards Standard Forged Flanges (Weld-neck, Slip-on, Socket-weld, and Blind flange) are manufactured by Rayoung to different specifications like ASME, ANSI standards. Our Forged Flanges cover a full range of pressure ratings of these specifications. Manufacturing Standards Referred ASME B16.5: Dimension standard for steel pipe flanges and flanged fittings ASME B16.47: Large diameter steel flanges NPS 26 to NPS 60 MSS-SP44: For steel pipeline flanges API 605: For large diameter carbon steel flanges Types of Forged Flanges Industrial welded forged flanges come in many different types. Each species meets its special requirements. For example, long weld neck flanges are attached to the necks of the pipes. There is also have weld neck flange weld neck flange; threaded flange; slip-on flange; lap-joint flange; blind flange; Plate flange Forged Flange Pressure Ratings Class 150 lb Class 300 lb Class 600 lb Class 900 lb Class 1500 lb Class 2500 lb

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Forged AWWA Flanges We don’t just manufacture flanges; we engineer them to exact specifications. AWWA C207: Specialized for high-quality carbon steel flanges used in waterworks service. AWWA C228: Dedicated to stainless steel flange solutions where superior corrosion resistance is a necessity. Industrial-Grade AWWA Steel Flanges: Reliable Solutions for Global Waterworks Infrastructure In the field of municipal water treatment and low-pressure piping, the integrity of every connection is paramount. As a premier forged steel flange manufacturer, we provide a comprehensive range of AWWA-standard steel flanges designed to meet the rigorous demands of the American Water Works Association. Whether you are a large-scale stockist or a trading partner managing infrastructure projects, our facility offers the production capacity and technical precision required for leak-free, long-term performance in fluid transport systems. AWWA C207 & C228 Standards Steel Flange We don’t just manufacture flanges; we engineer them to exact specifications. Our production lines are optimized for: AWWA C207: Specialized for high-quality carbon steel flanges used in waterworks service. AWWA C228: Dedicated to stainless steel flange solutions where superior corrosion resistance is a necessity. These standards ensure that every forged steel flange—from its drilling pattern to its material density—complies with the maximum allowable pressure ratings and dimensional tolerances required for municipal safety. AWWA Flange Profiles We supply three primary configurations tailored for waterworks applications: AWWA Slip-On Flanges (SO): Designed to slide over the pipe end, our slip-on flanges are engineered for easy alignment and double-welding stability, ensuring a robust joint for water mains. AWWA Blind Flanges (BL): High-strength sealing solutions used to terminate piping sections or provide access points for future system expansion. AWWA Hub & Ring Flanges: Manufactured to match C207 and ANSI #150 bolt patterns, these are the industry standard for connecting pumps, valves, and heavy-duty waterworks equipment. Pressure Classes & Materials AWWA flanges are the go-to choice for light-duty, high-volume applications (typically up to 300 psi). We specialize in the most sought-after pressure ratings for Traders and Stockists: Class D (The Industry Standard): Rated at 175 psi for sizes <12″ and 150 psi for larger diameters. Class B, E, and F: Full coverage for varied pressure requirements. Material Portfolio: ASTM A105 Carbon Steel, 304L, and 316L Stainless Steel. Size Range: Comprehensive production from standard sizes up to 144-inch ultra- large diameters. Industrial Applications: Our forged AWWA flanges are currently serving critical roles in: Municipal Waterworks: Potable water distribution and transmission. Wastewater Treatment: Slurry and plant piping systems. Irrigation & Hydro-projects: Large-scale fluid management. Industrial Cooling: Low-pressure plant piping. Why Choose Our Factory for Bulk Procurement? As a B2B-focused supplier, we understand that traders and stockists need more than just a product—they need a reliable supply chain. Direct Factory Advantage: Eliminate middlemen costs with competitive factory- direct pricing. Scalable Production: Whether it’s a full container of Class D Slip-ons or custom-coated large-diameter rings, we handle high-volume orders with ease. Custom Coating & Finishing: We provide specialized surface treatments (anti- rust oils, black paint, or epoxy coatings) to protect your inventory during long-term storage or sea transit. Technical Support: Every batch is backed by a full Material Test Certificate (MTC) and rigorous QC inspection reports.

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Industry forged steel flanges Manufacturer Rayoung supplies GOST Flanges, GOST 12820-80, GOST 12821forged Flange, GOST Flanges in forged steel, Stainless Steel, Carbon steel, etc. Standard: Plate Flanges(GOST12820-80),Blind Flanges(GOST12836-67); Welding neck Flanges(GOST12821-80); Steel Butt-Welded Flanges GOST12821-80 Surface Treatment: Anti-rust Oil, Transparent/Yellow/Black Anti-rust Paint, Zinc, Hot-dipped Galvanized. Usage: Oil Field, Offshore, Water System, Shipbuilding, Natural Gas, Electric Power, Pipe Projects, etc. Pressure ratings : PN6 through PN160MPa, Range: DIN15 – DIN1600. Use: offshore oil industries, oil fields, natural gas industries, and water systems. Surface Treatment: anti-rust paint, oil black paint, yellow transparent, and zinc plate. We are recognized as a Trusted Manufacturer and exporter of GOST Flange Dimensions. GOST Slip On Flange GOST Socket Weld Flanges GOST Blind Flanges / Dummy Flange GOST Threaded / Screwed Flanges GOST Orifice Flanges GOST Lap Joint Flanges GOST Plate Flange

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