ZIZI ENGINEERING CO.,LTD
ZIZI ENGINEERING CO., LTD
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Forged coupling is one of the popular forged fittings that used to connect pipeline within 4 inch by threads or socket welding. It
Duplex steel 2205 forged coupling are widely used in applications that require excellent corrosion reisitance and high strength.
Chemical Composition
| C | Mn | P | S | Si | Ni | Cr | Mo |
| 0.03 | 2 | 0.03 | 0.02 | 1 | 4.5-6.5 | 22-23 | 3-3.5 |
Mechanical Properties
| Tensile Strength | Yield Strength | Elongation |
| 620 | 450 | 25 |
Features
Excellent corrosion resistance
High oxidation resistance above 300℃
Solution heat treatment between 1020-1100℃
Low machinability due to the high strength
Suit for most standard welding methods.
Duplex steel forged fittings Manufacturing standards
| ASTM A182/ SA182 | Standard Specification for Forged fittings for high temperature service |
| ASME B16.11 | Specification for Forged Socket Weld Fittings and Threaded Fittings |
| MSS SP-95 | Swage(d) Nipples and Bull Plugs |
| BS3799 | Specification for Steel Pipe Fittings, Screwed & Socket Welding for The Petroleum Industry |
Size Range
Both Socket Weld & Threaded fittings are available in 1/8″, 1/4″, 3/8″, 1/2″, 3/4″, 1″, 1 1/4″, 1 1/2″, 2″, 2 1/2″, 3″, 4″
Pressure
Socket Weld Fittings—3000lb, 6000lb, 9000lb
Threaded Fittings—2000lb, 3000lb, 6000lb
Connection
Threaded—NPT, BSP, BSPP, BSPT, GI, PT
Socket Weld
Material
ASTM A182/ SA182 UNS S31803, S32950, S32750, S39274, S3260, S39277, S32520, S32205, S32250
Product Type
●Coupling
Half coupling, Full coupling
●Elbow
45 Degree elbow, 90 degree elbow
●Tee
Equal tee, reducing tee
●Cap
Pipe cap, End cap
●Nipple
Hex Nipple, Threaded Nipple, Swage Nipple
●Bushing
●Plug
●Union
Testing & Documents
Mill Test Certificates, EN 10204 3.0/3.1, Destructive Test Report, Non Destructive Test Reports, Third Party Inspection Reports
Packing
Bubble wraps, carton box, wooden cases
Application