ZIZI ENGEERING CO LTD specialize in producing SS 904L pipe fittings. Stainless Steel 904L is a high-end austenitic stainless steel with low carbon content, containing nickel, copper and molybdenum. It offers superior corrosion resistance when compared to conventional chromium-nickel steels such as 316L and 304L.
Recently we have received an order from a regular customer regarding SS 904L pipe fittings. The purchased products include ASTM A403-N08904/SS-904L 90deg elbow,equal tee,reducing tee and concentric reducer.
| ELBOW 90°, BW, DN200 Sch 10S, ASTM A403-N08904/SS-904L, ERW, ASME B 16.9 | 300 Ea |
| ELBOW 90°, BW, DN50 Sch 10S, ASTM A403-N08904/SS-904L, ERW, ASME B 16.9 | 80 Ea |
| EQUAL TEE, BW, DN200 Sch 10S, ASTM A403-N08904/SS-904L,ERW, ASME B 16.9 | 76 Ea |
| EQUAL TEE°, BW, DN50 Sch 10S, ASTM A403-N08904/SS-904L,ERW, ASME B 16.9 | 200 Ea |
| REDUCING TEE, BW, DN200X80 Sch 10S, ASTM A403-N08904/SS-904L, ERW ASME B 16.9 | 58 Ea |
| CONCENTRIC REDUCER, BW, DN80X50 Sch 10S, ASTM A403-N08904/SS-904L, ASME B 16.9 | 210 Ea |
Advantages of SS 904L Pipe Fittings Material
SS 904L pipe fittings are widely used due to their remarkable corrosion resistance. SS 904L is a high-alloy stainless steel with high chromium, nickel, and molybdenum levels. It is more resistant to corrosion than other types of stainless steel. This metal is highly resistant to pitting and crevice corrosion, making it ideal for use in harsh environments.
The high content of alloying elements in 904L gives the alloy exceptionally good resistance to uniform corrosion.
Chemical Composition of ASTM A403-N08904 Butt Weld Fittings
| CHEMICAL | LIMITS | C | Mn | P | S | Si | Ni | Cr | Mo | N | Cu |
| SS 904L (N08904) | MIN | 23.00 | 19.00 | 4.00 | 1.00 | ||||||
| MAX | 0.02 | 2.00 | 0.040 | 0.030 | 1.00 | 28.00 | 23.00 | 5.00 | 0.10 | 2.00 |
Mechanical Properties
| MATERIAL | T.S (MPA) | Y.S (MPA) | EL % |
| SS 904L (N08904) | 490 min | 215 min | 35 min |
SS 904L was originally developed to withstand environments containing dilute sulfuric acid, and is one of the few stainless steels that, at temperatures up to 95°F (35°C), provides full resistance in such environments within the entire concentration range of 0 to 100%. Therefore, the higher performance austenitic stainless steels such as 904L have very good resistance to SSC.
Inspection of ASTM A403 N08904 Butt Weld Fittings
We have professional quality inspectors responsible for product weight testing. Usually, we measure the diameter and wall thickness of the welded pipe fittings, and use a PMI to check whether the materials are correct.
ASME B16.9 Butt Weld Fittings Specification
Specification of ASME B16.9
Standard: ANSI/ASME B16.9, B16.28, MSS-SP-43
Specification: ASTM / ASME A403 / SA403
Size: NPS 1/2″ to 48″
Thickness: Sch 10S to Sch XXS
Type: Seamless & Welded Butt weld Fittings
Types of Stainless Steel Pipe Fittings
There are various types of SS 904L butt weld pipe fittings that can meet the design requirements of various pipeline systems. The common types of butt weld fittings include stainless steel 904L butt weld elbow, tee, concentric reducer, eccentric reducer, cross, cap, stub end, etc. These fittings play important roles in different pipeline systems.
| SS 316L 90 Degree Elbow | 45 Degree Elbow |
| Concentric Reducer | SS 904L Eccentric Reducer |
| SS 904L Equal Tee | Reducing Tee |
| SS 304L 5D Bend | 3D Bend |
| Long Stub End | Short Stub End |
| SS 316L Cross | Steel Cap |
Application of SS 904L Pipe Fittings
SS 904L butt weld pipe fittings are widely used in multiple fields due to their excellent corrosion resistance and high strength.
Petrochemical Industry
Nuclear Power
Mechanical
Medical Equipment