Views: 4 Author: Site Editor Publish Time: 2025-05-28 Origin: Site
904L stainless steel buttweld pipe fittings are widely used connection components in piping systems, primarily joining two pipe sections by welding. These fittings are expertly designed to ensure stable and leak-proof pipe connections, playing a crucial role in various industrial environments.
Buttweld pipe fittings are widely used connection components in piping systems, primarily joining two pipe sections by welding. These fittings are expertly designed to ensure stable and leak-proof pipe connections, playing a crucial role in various industrial environments.
Butt weld fittings are mainly suitable for high-pressure pipelines that require high pressure resistance and precision dimensions, as well as other high-pressure applications in industries such as petrochemical, pharmaceutical and healthcare, power generation, aerospace, military, fire protection, metallurgy, shipbuilding, natural gas, nuclear power, and environmental protection.
Specifications | ASTM A403 |
Size | 1/8” NB TO 48” NB. (Seamless & 100% X-Ray Welded, Fabricated) |
Standards | ASME/ANSI B16.9, ASME B16.28, MSS-SP-43 |
Thickness | 5s, 10s, 40s, 80s, 10, 20, 40, STD, 60, 80, XS, 100, 120, 140, 160, XXS available with NACE MR 01-75 |
Type | Seamless / Welded / Fabricated |
CHEMICAL | LIMITS | C | Mn | P | S | Si | Ni | Cr | Mo |
ASTM A403 WP904L | MIN | 23.00 | 19.00 | 4.000 | |||||
MAX | 0.02 | 2.00 | 0.045 | 0.035 | 1.00 | 28.00 | 23.00 | 5.000 |
MATERIAL | T.S (MPA) | Y.S (MPA) | EL % |
ASTM A403 WP904L | 490 min | 220 min | 28 min |
STANDARD | WERKSTOFF NR. | UNS | JIS | BS | KS | AFNOR | EN |
Stainless Steel 904L Pipe Fittings | 1.4539 | N08904 | SUS 904L | 904S13 | STS 317J5L | Z2 NCDU 25-20 | X1NiCrMoCu25-20-5 |
High Strength: Butt weld fittings connect to pipes through welding, forming a robust, integral unit that boasts high connection strength.
Excellent Sealing: The welding method creates an almost seamless connection between the fitting and the pipe, ensuring superior sealing performance.
Corrosion Resistance: Depending on the specific environment and medium, butt weld fittings can be made from various materials to enhance their corrosion resistance.
Stainless Steel buttweld fittings come in various types, such as elbows, tees, crosses, reducers, and caps. Each of these different types plays a crucial role in piping systems.
| Buttweld elbow is a common pipe connector, used to change the flow direction of the medium in the pipeline system. It is connected to the pipeline by butt welding.. |
| Tees are used for branch connections in pipelines. They are fittings with three ports, available in T-shapes and Y-shapes, with both equal and reducing outlets, and are used where three pipes of the same or different sizes converge. The primary function of a tee is to change the direction of fluid flow. |
| Butt weld crosses are fittings with four ports. They can divide one main pipeline into three branch pipelines, or converge three branch pipelines into one main pipeline. |
| Reducers are mainly used to connect two pipes of different diameters. Reducers are primarily categorized into concentric reducers and eccentric reducers. Concentric reducers have their central axes of both ends aligned, while eccentric reducers have their central axes offset. |
| Caps are pipe fittings primarily used to seal the end of a pipeline, preventing the leakage of media (such as gases or liquids) from within the pipe, and also serving to protect the pipe end. |
Nominal Size | Outside Diameter at Bevel | Center to End | Center to Center | Back to Face | ||||
90° Elbows | 45° Elbows | 180 Returns | ||||||
DN | NPS | OD | A | B | O | K | ||
3D | 3D | LR | SR | LR | SR | |||
15 | 1/2 | 21.3 | 76 | 48 | ||||
20 | 3/4 | 26.7 | 57 | 24 | 76 | 51 | ||
25 | 1 | 33.4 | 76 | 31 | 76 | 51 | 56 | 41 |
32 | 1 1/4 | 42.2 | 95 | 39 | 95 | 64 | 70 | 52 |
40 | 1 1/2 | 48.3 | 114 | 47 | 114 | 76 | 83 | 62 |
50 | 2 | 60.3 | 152 | 63 | 152 | 102 | 106 | 81 |
65 | 2 1/2 | 73 | 190 | 79 | 190 | 127 | 132 | 100 |
80 | 3 | 88.9 | 229 | 95 | 229 | 152 | 159 | 121 |
90 | 3 1/2 | 101.6 | 267 | 111 | 267 | 178 | 184 | 140 |
100 | 4 | 114.3 | 305 | 127 | 305 | 203 | 210 | 159 |
125 | 5 | 141.3 | 381 | 157 | 381 | 254 | 262 | 197 |
150 | 6 | 168.3 | 457 | 189 | 457 | 305 | 313 | 237 |
200 | 8 | 219.1 | 610 | 252 | 610 | 406 | 414 | 313 |
250 | 10 | 273 | 762 | 316 |
| 508 | 518 | 391 |
300 | 12 | 323.8 | 914 | 378 | 914 | 609 | 619 | 467 |
350 | 14 | 355.6 | 1067 | 441 | 1067 | 711 | 711 | 533 |
400 | 16 | 406.4 | 1219 | 505 | 1219 | 813 | 813 | 610 |
450 | 18 | 457 | 1372 | 568 | 1372 | 914 | 914 | 686 |
500 | 20 | 508 | 1524 | 632 | 1524 | 1016 | 1016 | 762 |
550 | 22 | 559 | 1676 | 694 | 1676 | 1118 | 1118 | 838 |
600 | 24 | 610 | 1829 | 757 | 1829 | 1219 | 1219 | 914 |
650 | 26 | 660 | 1981 | 821 | ||||
700 | 28 | 711 | 2134 | 883 | ||||
750 | 30 | 762 | 2286 | 964 | ||||
800 | 32 | 813 | 2438 | 1010 | ||||
850 | 34 | 864 | 2591 | 1073 | ||||
900 | 36 | 914 | 2743 | 1135 | ||||
950 | 38 | 965 | 2896 | 1200 | ||||
1000 | 40 | 1016 | 3048 | 1264 | ||||
1050 | 42 | 1067 | 3200 | 1326 | ||||
1100 | 44 | 1118 | 3353 | 1389 | ||||
1150 | 46 | 1168 | 3505 | 1453 | ||||
1200 | 48 | 1219 | 3658 | 1516 | ||||
All Fittings [Notes(1)and (2) | Center | Overall | Overall | 180 deg Returns | Lap Joint Ends | Angularity | ||||||||
Nominal | Outside | Inside | Center-to-Center | Back- | Align- | Outside | Fllet | Lap | Nominal | Off | Off | |||
1/2% to2 1/2 % | +0.06, | 0.03 | 0.06 | 0.06 | 0.12 | 0.25 | 0.25 | 0.03 | +0, | +0, | +0.06, | 1/2%to 4 | 0.03 | 0.06 |
3 to 3 1/2% | 0.06 | 0.06 | 0.06 | 0.06 | 0.12 | 0.25 | 0.25 | 0.03 | +0, | +0, | +0.06 | 5 to 8 | 0.06 | 0.12 |
4 | 0.06 | 0.06 | 0.06 | 0.06 | 0.12 | 0.25 | 0.25 | 0.03 | +0, | +0, | +0.06, | 10 to 12 | 0.09 | 0.19 |
5 to 8 | +0.09, | 0.06 | 0.06 | 0.06 | 0.25 | 0.25 | 0.25 | 0.03 | +0, | +0, | +0.06 | 14 to 16 | 0.09 | 0.25 |
10 to 18 | +0.16, | 0.12 | 0.09 | 0.09 | 0.25 | 0.38 | 0.25 | 0.06 | +0, | +0, | +0.12, | 18 to 24 | 0.12 | 0.38 |
20 to24 | +0.25, | 0.19 | 0.09 | 0.09 | 0.25 | 0.38 | 0.25 | 0.06 | +0, | +0, | +0.12, | 26 to 30 | 0.19 | 0.38 |
26 to 30 | +0.25, | 0.19 | 0.12 | 0.19 | 0.38 | 32 to 42 | 0.19 | 0.50 | ||||||
32 to 48 | +0.25, | 0.19 | 0.19 | 0.19 | 0.38 | 44 to 48 | 0.19 | 0.75 | ||||||
· Plastic bag/film (single packaging)
· Bubble film/PEP
· Carton/wooden box
· Pallet
· Woven bag
SS 304 Pipe Fittings | SS 304L Pipe Fittings | SS 304H Pipe Fittings |
SS 310 Pipe Fittings | SS 310S Pipe Fittings | SS 310H Pipe Fittings |
SS 316 Pipe Fittings | SS 316L Pipe Fittings | SS 316H Pipe Fittings |
SS 316Ti Pipe Fittings | SS 317 Pipe Fittings | SS 317L Pipe Fittings |
SS 321 Pipe Fittings | SS 321H Pipe Fittings | SS 347 Pipe Fittings |
SS 446 Pipe Fittings | SS 410 Pipe Fittings | SS 904L Pipe Fittings |
304 stainless steel is the most common and widely used austenitic stainless steel. It mainly contains chromium and nickel, and has good corrosion resistance, machinability and weldability. 904L stainless steel is a high alloy austenitic stainless steel. In addition to chromium and nickel, it also contains high amounts of molybdenum and moderate amounts of copper. This gives 904L excellent resistance to pitting, crevice corrosion and stress corrosion cracking in extremely corrosive environments. It is much more corrosion resistant than 304 stainless steel and has a higher cost. It is mainly used in harsh industrial fields such as chemical, pharmaceutical, and seawater treatment.
Sulfuric Acid Production and Storage Equipment
Phosphoric Acid Production Equipment.
Seawater Treatment and Desalination Equipment
Oil and Gas Industry
Pharmaceutical and Food Processing Equipment
Pulp and Paper Industry.
Flue Gas Desulfurization (FGD) Systems.
Excellent corrosion resistance
Good weldability
Good processing performance
Non-magnetic
-Pipe and Tube (EN 10216-5, ASTM A213, ASTM A249, A312, A790,)
-Forged Fitting and Flange (ASTM A182 , ASTM A105,ASTM B564 )
-Butt Weld Fittings (ASTM A234, ASTM A403,ASTM A815)
-Round bar , Billet (ASTM A276, ASTM A479)
- Plate, Sheet, Strip(ASTM A240, EN 10028-7, A480)
-Bolting, Nuts（ASTM A193, A194, A320）
We Export 904L stainless steel buttweld pipe fittings to Saudi Arabia, United Arab Emirates, Qatar, Bahrain, Oman, Kuwait, Turkey, Egypt, Yemen , Syria, Jordan, Cyprus, Singapore, Malaysia, Indonesia, Thailand, Vietnam, South Korea, Japan, Sri Lanka, Maldives, Bangladesh, Cambodia, Argentina, Bolivia, Brazil, Venezuela, Colombia, Ecuador, Guyana, Paraguay, Uruguay, United States Of America, Canada, Mexico, Panama, Jamaica, Bahamas, Denmark, Norway, Germany, France,Italy, United Kingdom, Spain, Belgium, Greece, Czech Republic, Portugal, Hungary, Albania, Austria, Finland, Ireland, Croatia, Malta, Nigeria, Algeria, Angola, South Africa, Libya, Egypt, Sudan, Europe, Africa, Asia, North America, South America, Middle East.etc
1. What is 904L stainless steel used for?
904L stainless steel is an ultra-low carbon high alloy austenitic stainless steel with excellent corrosion resistance. It is commonly used in chemical, petroleum, marine and other fields, such as heat exchangers, condensers, storage tanks and pipelines.
2. What is a Buttweld pipe fitting?
A Buttweld pipe fitting is a type of pipe fitting that is designed to be joined to a piping system by welding the ends of the fitting to the ends of the pipes. The ends of buttweld fittings are typically beveled to allow for a full penetration weld, creating a strong and leak-proof connection.
