Stainless Steel Socket Weld Fittings - Precision Engineered for Optimal Performance and Unsurpassed Durability
Product Description
Product Overview
Stainless Steel Socket Weld Fittings are the epitome of durability and reliability, serving as indispensable connectors in scenarios demanding superior leak-tightness and robustness. Designed for high-pressure, high-temperature, or leakage-prone environments, these fittings ensure a seamless, enduring connection between the fitting and the pipe. By inserting the pipe into the fitting's socket and applying a fillet weld around the exterior, the design notably augments resistance to fatigue and mechanical stress, rendering them essential for contemporary industrial piping systems, particularly in small-bore applications.
Core Features & Advantages
Exceptional Structural Integrity: The innovative socket weld design delivers unrivaled mechanical strength, adeptly withstanding vibration, shock, and bending stress to prevent any joint loosening or leakage.
Superior Sealing Performance: The welded joint forms a permanent metal-to-metal seal, significantly surpassing the leak-tightness of threaded connections, ideal for systems operating under high pressure, extreme temperatures, or vacuum conditions.
No Threading Required: *Eliminates stress risers and potential leakage pathways inherent to threaded connections, while also negating the necessity for sealants such as thread tape or compounds.
Easy Installation & Alignment: The socket design effortlessly facilitates natural self-alignment of pipes prior to welding, streamlining installation, particularly in multipipe assemblies within restricted spaces.
Smooth Flow Characteristics: Premium fittings boast well-matched bored interiors to standard pipe IDs, ensuring fluid flow is seamless and efficient, reducing pressure drops and turbulence considerably.
Excellent Corrosion Resistance: Crafted from stainless steel grades like 304 (06Cr19Ni10), 316 (0Cr17Ni12Mo2), 316L (00Cr17Ni14Mo2)** in compliance with ASTM A182 standards, these fittings offer exceptional resistance to corrosion and temperature extremes, making them perfect for use in corrosive environments across the chemical, petrochemical, marine, and food & pharmaceutical industries.
Technical Parameters & Specifications
Connection Type: Socket Weld (SW)
Applicable Standards:
International Standards: ASME B16.11, MSS SP-79
Domestic Standards: GB/T 14383, HG/T 21634 (Typically referenced in specific regions/markets)
Pressure Rating: Available in classes such as 3000 pound (SCH80) and 6000 pound (SCH160) to cater to a range of pressure requirements.
Common Types: Including 45° Elbow, 90° Elbow, Tee, Cross, Socket, Cap, Reducing Socket, and more.
Size Range: Designed primarily for small-bore piping, spanning **DN6 ~ DN100 (1/8" ~ 4").
Welding Requirement: Ensure the pipe is inserted fully to the socket's base with a roughly 1.6mm expansion gap before performing a fillet weld.
Application Areas
These products find widespread use in industries where safety and leak prevention are crucial:
Oil & Gas: Utilized in wellhead equipment and high-pressure process lines within refineries.
Chemical & Petrochemical: Ideal for corrosive chemical transfer lines and reactor interfaces.
Power Generation: Suited for high-pressure steam and feedwater systems in power plant boilers.
Shipbuilding: Essential for marine piping and hydraulic systems.
Pharmaceutical & Food Industry: Employed in process piping where high cleanliness is required, often provided with polished finishes.
Compressed Air Systems: Applicable for high-pressure compressed air lines in industrial settings.
Selection & Installation Considerations
Material Selection: Opt for 304, 316, or 316L stainless steel based on the medium being conveyed, considering factors like corrosiveness and temperature.
Pressure Rating: Determine the suitable pressure class (e.g., 3000LB or 6000LB) according to the system's design pressure requirements.
Size Compatibility: It is crucial to guarantee that the fitting size impeccably aligns with the pipe's external diameter for optimal integration and functionality.
Professional Welding: Essential welding operations should be executed by certified welders, adhering stringently to established protocols. This includes maintaining the appropriate root gap and employing techniques such as TIG for the root pass. Additionally, conducting comprehensive Non-Destructive Testing (NDT) is paramount to affirm the superior quality and integrity of the welds.
Post-Weld Treatment: To reinstate the complete corrosion resistance of the areas affected by heat during welding, it is often necessary to undertake post-weld treatments. These treatments include passivation, and possibly pickling, to ensure the welded zones regain their full protective properties against corrosion.
Detailed Photos






Product Parameters
| Size |
3/8"~4" |
| Material |
SS304;SS316;SS304L;SS316L |
| Connection type |
BW ; SW |
| Packing |
carton;wooden case |
About US






FAQ
Q:How do you pack?
A:Plastic bags-------(Paper boxes)-------Cartons-------Plywood cases
Q:How long is the quality guarantee period?
A:We supply 6 to 12 months for quality guarantee according to customers' using frequency.
Q:How can you guarantee the quality of products?
A:First of all, we have the numerical control device to manufacture products accurately. Then our quality inspectors will test products one by one to make sure every flange or fitting we sell is qualified.
Q:How can I check your factory situation while it's difficult for me to come to China.
A:We have photos and videos on our website, It shows every step of the manufacturing.
Alternatively, I can take videos or photos of our factory and send them to you.
Q:What is your lead time?
A:It's around 15 days normally. If we have the products in stock, it will be about 5days.
Q:Can you print our Logo on the valves/Fittings?
A:Yes, we can totally produce products according to your this kind special request, even manufacture it based on your drawing
Q:Are samples available to be sent with free?
A:It depends on what product you need. There are hundreds of products we sell. You can contact us for particular answer.
Q:Do you have a minimum quantity of the products?
A:No, we will build business with you with even 1pc. We believe this cooperation will be a long-term relationship for our high quality, competitive price and good after-sale service.
Q:Where are the main markets for your products?
A:We hope to make business with companies from all over the world. And for now, our flanges and fittings have been exported to especially in North America, South America, South Asia, Europe and Middle East.
Q:Are you a factory or trading company?
A:We are a factory specialized in manufacturing flange and fitting over 10 years.