Product Information
Stainless Steel Socket-weld Flange
- For connections of pipes of relatively small diemension (0.5"-4")
- Suitable for low temperature and pressure application
Stainless Steel Socket-Weld Flange
Durable Precision for Small-Bore Piping Systems
Product Overview
The Stainless Steel Socket-Weld Flange is a high-performance fitting designed for seamless integration into small-diameter piping systems requiring leak-proof connections in demanding environments. Its socket-weld design ensures robust mechanical strength and corrosion resistance, making it ideal for critical applications in industries such as oil and gas, chemical processing, and pharmaceuticals
Key Features
Material Superiority: Constructed from ASTM A182 F304/F316 stainless steel, offering exceptional resistance to corrosion, high temperatures, and aggressive media.
Compact Design: Optimized for DN15-DN100 (½"-4") pipelines, with a compact structure that simplifies installation in confined spaces
Leak-Resistant Joint: Features a recessed inner diameter (ID) to align with the pipe, creating a smooth flow path and minimizing turbulence
Pressure Range: Suitable for ASME Class 150 to Class 3000 systems, ensuring compatibility with low-to-medium pressure requirements
Interchangeability: Compatible with standard gaskets, bolts, and lap joint flanges for flexible system configurations
Design & Construction
Socket-Weld Connection: The pipe is inserted into the flange’s socket and welded externally, forming a strong, permanent joint resistant to vibration and thermal cycling
Raised Face (RF) or Ring-Type Joint (RTJ): Available with RF surfaces for standard sealing or RTJ grooves for high-pressure applications
Expansion Gap: A 1.6mm-3.2mm gap between the pipe end and flange shoulder accommodates thermal expansion, preventing stress fractures
Applications
Oil & Gas: Instrumentation lines, pump discharge lines, and valve manifolds
Chemical Plants: Handling corrosive fluids, acids, and high-purity media
Pharmaceuticals: Hygienic systems requiring crevice-free surfaces and CIP/SIP compliance
Technical Specifications
| Material Grades | SS304, SS316, SS316L, Duplex 2205 |
| Size Range | ½" to 4" (DN15 to DN100) |
| Pressure Classes | ASME 150#, 300#, 600#, 900#, 1500#, 2500#, 3000# |
| Standards | ASME B16.5, B16.11, MSS SP-83, ISO 15649, DIN 2576 |
| Surface Finish | Electro-polished, sandblasted, or natural mill finish |
Installation Guidelines
Pipe Preparation: Ensure pipe ends are square-cut and deburred for full insertion into the socket
Tack Welding: Align the flange and pipe, then secure with tack welds before final circumferential welding
Gap Maintenance: Maintain the specified expansion gap to prevent joint stress26.
Certifications & Compliance
PED 2014/68/EU (Category I-IV)
ISO 9001:2015 quality management
NACE MR0175 for sour service environments
