Socket Weld Elbow
Used for small-bore high-pressure pipelines from DN6 to DN100, achieving 45° and 90° flow direction changes in the piping system; commonly used in chemical, power, oil and gas, marine, and instrument heat-tracing high-pressure branch lines,
Inquiry
- 1. Forged one-piece construction
- High pressure rating: integral die forging process
- No rolled welds
- Pressure ratings up to 3000LB-9000LB
- Suitable for high-temperature, high-pressure conditions
Detailed Introduction
Socket weld elbows belong to forged high-pressure pipe fittings. They are formed through integral die forging, with socket-type connections at both ends. During installation, the pipe is inserted into the socket and a fillet weld is applied to complete the connection. This product is mainly suitable for small-diameter high-pressure piping systems with DN100 and below. Common angles are 90° and 45°, and non-standard angles such as 30° and 60° can also be customized. The product strictly complies with GB/T14383-2018 and ASME B16.11 standards, with pressure ratings covering 3000LB, 6000LB, and 9000LB. Materials such as carbon steel, stainless steel, alloy steel, and duplex steel can be selected to suit different media and working conditions. Socket weld elbows do not require bevel preparation; the pipe is inserted into the socket for positioning, making welding construction convenient. The structure is compact, with good vibration resistance and pressure-bearing performance, effectively reducing the risk of leakage. They are widely used in small-diameter process piping in industries such as petrochemical, electric power, nuclear power, gas, instrumentation piping, pharmaceutical, and marine, and are suitable for conveying fluids such as oil products, steam, and corrosive media. Before leaving the factory, the products undergo flaw detection, hardness, dimensional, and other inspections to ensure reliable mechanical performance. For specific models and prices, please contact us for confirmation.
- Integral die forging, no rolled weld seam, high pressure rating, up to 3000LB-9000LB.
- Socket weld connection, no bevel preparation required, pipe self-positions upon insertion into the socket, convenient construction.
- Suitable for small-diameter high-pressure pipelines from DN6 to DN100, angles cover 90° and 45°, non-standard customization supported.
- Diverse materials: carbon steel, stainless steel, alloy steel, duplex steel, meeting requirements for different media and working conditions.
- Complies with GB/T14383-2018 and ASME B16.11 standards, undergoes flaw detection, hardness, and dimensional inspection before leaving the factory.
- Compact structure, good vibration resistance and pressure-bearing performance, effectively reducing the risk of leakage.
| Product Name | Socket Weld Elbow |
| Product Category | Socket Weld Elbow / Forged Socket Weld Elbow / High-Pressure Socket Elbow / 90° Socket Weld Elbow / 45° Socket Weld Elbow / 3000LB Socket Weld Elbow / 6000LB Socket Weld Elbow / 9000LB Socket Weld Elbow |
| - Connection Type | SW Socket Weld, welded with outer fillet weld; |
| - Common Angles | 90°, 45°, with support for non-standard angle customization of 30°/60°; |
| - Nominal Diameter | DN6-DN100 (NPS 1/8″-NPS4″), limited to small bore use only; |
| - Pressure Class | 3000LB (3000#), 6000LB (6000#), 9000LB (9000#); for the same bore size, the higher the pressure class, the greater the wall thickness of the fitting, and the stronger the pressure-bearing capacity; |
| Carbon Steel | A105, 20#; |
| Stainless Steel | 304, 316L, 321 |
Application Scenarios
- Power and energy industry: used for power plant boiler branch pipes, instrument sampling lines, high-temperature steam heat tracing lines, etc., withstanding high-temperature and high-pressure working conditions.
- Petrochemical refining: used for small-bore process branch pipes in oil refining units and chemical units, conveying oil products, chemical raw materials, and flammable and explosive media.
- Marine and ocean engineering: used for high-pressure small-bore pipelines in ship piping systems, adapting to vibration and corrosion environments.
- Instrument and heat tracing pipelines: used for instrument sampling and heat tracing lines, ensuring precise control and thermal insulation effects.
- EPC general contracting and pipeline construction: used as a high-pressure pipe fitting accessory for on-site welding construction in space-constrained areas.
Product Overview
A socket-weld elbow is a type of forged high-pressure pipe fitting, formed by an integral die-forging process, with socket-type connection ends on both sides. During installation, the pipe is inserted into the socket, and fillet welding is performed on the outside to achieve a change in pipe direction. This product is mainly suitable for small-diameter high-pressure piping systems of DN100 and below, with common angles of 90° and 45°, and non-standard angles such as 30° and 60° can also be customized as required. Socket-weld elbows are manufactured in accordance with GB/T14383-2018 and ASME B16.11 standards, with pressure ratings covering 3000LB, 6000LB, and 9000LB, and can be made from carbon steel, stainless steel, alloy steel, duplex steel, and other materials to suit different media and operating conditions. The product has a compact structure, good pressure-bearing performance, and is easy to install, making it widely used in industries such as petrochemical, electric power, nuclear power, natural gas, instrumentation piping, pharmaceuticals, and marine engineering.
Key Selling Points
The socket-weld elbow is formed by integral die-forging, with no rolled or welded seams, and has a high pressure rating, up to 3000LB-9000LB, making it suitable for high-temperature and high-pressure operating conditions. The socket-welding connection method requires no bevel preparation; the pipe is inserted into the socket and automatically positioned, making on-site welding construction convenient and efficient. The socket structure provides reinforcement to the connection area, and the overall structure is compact and rigid, with excellent vibration resistance and pressure-bearing performance, effectively reducing the risk of leakage. The product is available in a variety of materials to meet the requirements of different media and corrosive environments. Before leaving the factory, strict flaw detection, hardness testing, and dimensional inspection are carried out to ensure reliable product quality.
Application Scenarios
Socket-weld elbows are suitable for small-diameter high-pressure piping of DN6-DN100, mainly used for boiler branch pipes, instrumentation sampling lines, and high-temperature steam heat-tracing lines in the power and energy industry; small-diameter process branch lines in petrochemical refining units for conveying oil products, chemical raw materials, and flammable and explosive media; high-pressure small-diameter piping in marine and offshore engineering; instrumentation and heat-tracing lines; as well as on-site welding construction scenarios in space-constrained areas.
Specifications
The main specification parameters of socket-weld elbows include: connection method is socket welding (SW), with external fillet welding; common angles are 90° and 45°, with 30°/60° non-standard customization supported; nominal diameter is DN6-DN100 (NPS 1/8"-4"); pressure classes are 3000LB, 6000LB, and 9000LB; available materials include carbon steel (A105, 20#), stainless steel (304, 316L, 321), alloy steel (F11, F22), and duplex steel (2205, 2507); applicable standards are GB/T14383-2018 and ASME B16.11; forming process is integral die-forging; surface treatment options include rust-preventive oil, blackening, and pickling and passivation (for stainless steel parts); inspection items include appearance and dimensional inspection, magnetic particle testing, ultrasonic testing, hardness testing, spectral material analysis, and heat number traceability; welding points include inserting the pipe into the socket and withdrawing it by 1-2mm to leave a gap, with only the external fillet weld being applied; usage limitations are that it is not suitable for large main pipes above DN100, and attention should be paid to the risk of crevice corrosion when handling highly corrosive media; applicable media include high-temperature steam, oil products, natural gas, hydraulic oil, and certain corrosive chemical fluids.
Procurement & Delivery
Socket-weld elbows are divided into standard stock specifications and non-standard customized specifications. Standard stock specifications (such as DN15-DN50, 3000LB, A105 or 304 material, 90°/45°) have a relatively low minimum order quantity, generally 5-10 pieces, with delivery within 3-7 working days after order confirmation. For conventional forged non-stock items (standard specifications with common materials), no mold development is required, and the production cycle is approximately 10-15 working days. For non-standard customized specifications (such as special angles, special wall thicknesses, special pressure classes, or materials), the minimum order quantity needs to be confirmed based on specific requirements, and the delivery time is determined according to the production schedule. Product packaging uses individual bubble wrap wrapping, waterproof and moisture-proof bags, thickened export wooden cases or plywood cases, with cushioning material filled inside, steel strapping reinforced on the outside of the wooden case, and shipping marks printed on it. Stainless steel and alloy steel pipe fittings are separately isolated and packaged to prevent contamination by carbon steel iron ions. You are welcome to contact us to confirm specific configurations and quotations.
Service & Support
We provide comprehensive pre-sales and after-sales services. Technical selection support: we can assist with product selection based on your operating medium, pressure, and temperature, provide warnings about usage risks such as crevice corrosion, and offer reference recommendations for selection. Documentation support: we promptly provide product drawings, dimension tables, material certificates, flaw detection reports, and other technical documents. Quality issue handling: if factory-shipped products have quality defects in material, dimensions, or the forging process itself, and it is confirmed to be the supplier's responsibility, returns or exchanges can be executed; damage caused by incorrect selection, improper welding and installation, or improper use under operating conditions is not covered by the after-sales scope. Order logistics assistance: we track shipment logistics and assist with checking packing lists, invoices, shipping marks, and other export documents for foreign trade orders. Technical Q&A: we provide technical reference explanations regarding product installation and welding key points.
FAQ
What is the difference between a socket-weld elbow and a butt-weld elbow? How should they be selected?
Socket-weld elbows (SW) are mostly used in small-caliber high-pressure pipelines within DN100. The pipe is inserted into the socket and fillet-welded on the outside, making construction convenient; butt-weld elbows (BW) are suitable for large-caliber pipelines and require bevel-groove welding. During selection, the decision must be based on pipe diameter, pressure rating, and operating conditions. For small-caliber high-pressure pipelines, socket-weld elbows are given priority.
What materials and pressure ratings do socket-weld elbows support?
Socket-weld elbows can be made of carbon steel (A105, 20#), stainless steel (304, 316L, 321), alloy steel (F11, F22), duplex steel (2205, 2507), and other materials. Pressure ratings cover 3000LB, 6000LB, and 9000LB, and the specific choice can be made according to operating requirements.
Can socket-weld elbows be customized with non-standard angles?
Yes. We support customization of non-standard angles such as 30° and 60°, and production can also be carried out according to customer drawings or samples.
What are the MOQ and delivery time for socket-weld elbows?
For standard off-the-shelf specifications (such as DN15-DN50, 3000LB, A105 or 304 material), the MOQ is generally 5-10 pieces, with a delivery time of 3-7 working days; for conventional non-stock specifications, the production cycle is about 10-15 working days; for non-standard customization, the MOQ and delivery time need to be confirmed based on specific requirements.
How are socket-weld elbows packaged?
The product is wrapped individually in bubble film, with key protection at the socket and spigot ends, placed into a waterproof and moisture-proof bag with a desiccant inside, then packed into a reinforced export wooden crate or plywood wooden crate, filled with cushioning material inside, with steel strapping reinforced on the outside of the crate and shipping marks printed on it. Pipe fittings made of stainless steel and alloy steel are packed separately and isolated to prevent contamination from carbon steel.
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