As an important pipe connector fittings, Stainless Steel Pipe Coupling is mainly used in non-butt welded pipes which size under 4 inches. It is one of the most outstanding pipe fittings with excellent overall properties such as good looking, durable and clean. The application fields cover oil, gas, chemical, food industry and so on.
SS ASME B16.11/BS3799 Forged Socket Weld Full Coupling
There are two connection ways for Forged Stainless Steel Pipe Coupling: Socket Weld Coupling and Threaded Coupling. Flexible connection makes it suitable for use in pipelines. And the features of stainless steel make the joint more hard-wearing and long-lasting. We manufacture both types in standard of ASME B16.11.
BS 3799 couplings have another name—Threaded Socket. This standard is a British standard for threaded fittings. The threads are BSP series, such as BSPP & BSPT. ASME B16.11 stainless steel NPT coupling is more prevalent internationally.
Forged Screwed-Threaded Half Coupling Manufacturers
The value of the pressure rating represents the maximum pressure they can withstand, and the wall thickness will be thicker along with the pressure raises. The accuracy of pressure rating and size is related to the safety of application and must be taken seriously.
To provide customers with reassuring stainless steel coupling, Zizi Engineering strictly follows the production standards, manufacture process. And measures the diameter, thickness, thread length during the inspection.
Supply Range
Size: 1/8″ to 4″ / DN6 to DN100
Pressure Rating: 2000LB, 3000LB, 6000LB, 9000LB
Type: Full and Half Coupling / Straight and Reducing Coupling
Stainless Steel Grades: ASTM A182 F304, F316, F317, F310, F321, F947, F309
ASTM A182 Stainless Steel Pipe Coupling
As we know stainless steel 316 & 304 have great strength, corrosion resistance and response to impact and explosion. But how to provide best product for customer? Choose the top quality original materials and right grades for stainless steel pipe coupling. And the test the properties after done the production. That’s our key.
Let’s see the stainless steel properties as following.
Chemical Composition %
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni |
| 304 | 0.03 | 2 | 0.75 | 0.045 | 0.03 | 18 – 20 | – | 8 – 10.5 |
| 316 | 0.035 | 2 | 0.75 | 0.045 | 0.03 | 16 – 18 | 2 – 3 | 10 – 14 |
Mechanical Properties
| Grade | Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation (%) |
| 304 | 515 | 205 | 40 |
| 316 | 515 | 205 | 40 |