ZIZI ENGINEERING CO.,LTD
ZIZI ENGINEERING CO., LTD
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Manufacturer and exporter Zizi provide a wide range of duplex steel forged fittings threaded fitting in common used grades UNS S31803, S32750, S32760.
Duplex stainless steel fittings offers high strength, fine finish, and excellent resistant to corrosion and pressure. Compared to welding fittings, it has an obvious advantage of simple and quick installation, it is the best choice for pipes that are not suitable for welding.
Forged Threaded fittings has threaded end to connect with other fittings or pipes. It covers different usage pipe fittings such as connection, change the direction, reducing the size.
 | Threaded Elbow Threaded elbow mainly is used to change the direction of pipeline in 45° or 90°.
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| Threaded Tee It can connect pipes as well as provide branches for the main pipe.
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| Threaded Coupling It is used to connect two pipes together.
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| Threaded Cap The function of cap is to block off the flow, which is the same as threaded plug. |
| Threaded Plug It is insert into the pipe end to stop the fluid.
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| Bushing It is used to connect two pipe with different diameter. It has external and internal threadeds.
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| Threaded Nipple
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Zizi supply forged threaded fittings in duplex / super duplex stainless steel ASTM A182 F51, F52, F53, F54, F55, F57, F59, F60
Here is the details of common used duplex steel grades.
UNS S31803 / A182 F51
Chemical Composition, %
| C | Mn | P | S | Si | Ni | Cr | Mo |
| 0.03 | 2 | 0.03 | 0.02 | 1 | 4.5-6.5 | 21-23 | 2.5-3.5 |
Mechanical Properties
| Tensile Strength | Yield Strength | Elongation |
| 620 | 450 | 25 |
UNS S32750 / A182 F53
Chemical Composition, %
| C | Mn | P | S | Si | Ni | Cr | Mo |
| 0.03 | 1.2 | 0.035 | 0.02 | 0.8 | 6-8 | 24-26 | 3-5 |
Mechanical Properties
| Tensile Strength | Yield Strength | Elongation |
| 800 | 550 | 15 |
UNS S2760 / A182 F55
Chemical Composition, %
| C | Mn | P | S | Si | Ni | Cr | Mo |
| 0.03 | 1 | 0.03 | 0.01 | 1 | 6-8 | 24-26 | 3-4 |
Mechanical Properties
| Tensile Strength | Yield Strength | Elongation |
| 750-895 | 550 | 25 |
The size of forged threaded fittings will not exceed 4", so they are packed into wooden cases.
Before packed into cases, we will dip them into anti rust oil to keep the surface clean. We will put each duplex steel fittings into plastic bags and put them into carton box. The label will be affixed to the box to show the product name, specification and quantity.