Stainless Steel Tube Fittings
Profab steel tube fittings support prototype evaluation, process validation, and small lot scale-up production. We also support customized packaging and labeling, and Profab Machine guarantees consistent appearance and performance when delivered at scale, reducing your inspection costs and project risk.
Stainless Steel Pipe Fittings Suppliers in China
Stainless steel tube fittings is a critical component in a fluid transfer system. Its core function is to act as a critical node for connection, sealing and control.Profab utilizes a graded process control for the surface treatment of stainless steel tube fittings. From degreasing and pickling to mechanical and electrolytic polishing and finally passivation and in-line cleaning. This ensures that the surfaces of these stainless steel tube fittings are free of free iron, burns and residues.
Profab Machine can realize different finishes from matte to mirror as per customer’s requirement. We issue surface roughness (Ra) and specular reflectivity test reports according to specified standards.Profab ss tube fittings meet the stringent requirements of hygiene and corrosion resistance in the food, pharmaceutical and chemical industries.
- Excellent corrosion resistance
- Reliability and long life reduce long-term costs
- High temperature and high pressure tolerance
- Easier maintenance and servicing
Connection Method
Variety of Applications For SS Tube Fittings
Stainless steel pipe fittings play an integral role in several key industries due to their superior performance. Each application poses unique challenges to pipe fittings and has given rise to corresponding solutions.
Why Choose PROFAB
Profab has more than 10 precision production lines. The factory is equipped with 5-axis CNC, laser cutting, welding, and various surface treatment equipment. The wide range of automation and CNC equipment allows for efficient fulfillment of high-volume orders as well as the flexibility to switch production lines to meet small batch customization needs.
- 20 Years Of Professional Manufacturing Experience
- Comprehensive solutions, not just products
- Customer-centric, simplified quotation and communication processes
- Reliability and sustainability
- Immediate response, regardless of project size
| Connection Method | Ease of installation | Reusability | Sealing reliability | Vibration resistance | cost | Main application scenarios |
| Card Sleeve Type | High | High | Very high | Very high | Middle | High-precision instruments, hydraulic systems, analytical equipment |
| Threaded | High | High | Medium (sealant dependent) | Medium | Low | General pipelines, water conservancy, chemical industry (non-critical) |
| Welding | Low (requires professional skills) | No | Very high | Very high | High | Large-scale pipeline projects, high-pressure/high-temperature critical systems |
| Press-fit | Very high | No (O-ring needs to be replaced) | Very high | Very high | Middle | Civil systems such as drinking water, heating, and gas |
Maximum Allowable Working Pressure (MAWP) is the highest internal pressure that a fitting can safely withstand at a given temperature.
The following tables, based on the ASME B31.3 and B31.1 codes, provide the maximum allowable working pressures for different sizes of ss pipe fittings at room temperature (22∘C).
1/4″ | ||||
1/2″ | ||||
1/2″ | ||||
3/4″ | ||||
1″ |
There is a negative correlation between working pressure and temperature. As the temperature increases, the mechanical strength of the stainless steel material gradually decreases, which leads to a weakening of its pressure-bearing capacity. Therefore, the MAWP at room temperature must be depressurized to ensure safety in high-temperature environments.
The user is required to multiply the MAWP at room temperature by the corresponding depressurization factor to obtain the true maximum working pressure at a given high temperature.
For example, a 316 stainless steel fitting with a working pressure of 2600 psig at ambient temperature and a temperature coefficient of 0.76 at 537∘C would reduce the MAWP to 1976 psig.