Views: 5 Author: Site Editor Publish Time: 2025-05-22 Origin: Site
On April 25, 2025, an established client from China sent us an inquiry for SS904L steel pipes and fittings. As this is a common stainless steel grade, we quickly provided a quotation, and the client placed an order a week later.
ZIZI is a professional manufacturer specializing in the production and processing of pipes and pipe fittings. Our products are primarily used in industries such as chemical, petroleum, natural gas, water conservancy, power generation, and offshore engineering. Our product range includes various sizes of seamless pipes, welded pipes, butt-welding pipe fittings, high-pressure forged fittings, and flanges. We offer a wide range of materials, including carbon steel, stainless steel, alloy steel, low-temperature steel, duplex steel, and super alloys.
ITEM | DESCRIPTION | QUANITITY | UNIT |
1 | PIPE BE DN100 SCH10S ASTM A312-N08904/SS-904L SMLS ASME B36.19 L=2M | 240 | EA |
2 | ELBOW 90° LR BW SMLS ASTM A403-N08904/SS904L DN100 SCH10S ASME B16.9 | 150 | EA |
3 | REDUCER CONCENTRIC DN125 X DN100 SCH10S ASTM A403-N08904/SS904L SMLS ASME B16.9 | 150 | EA |
Outer Diameter (OD):
Purpose: To ensure the pipe's outer diameter meets design specifications and allows for proper connection with other pipes or equipment.
Wall Thickness (WT):
Purpose: To impact the pipe's pressure bearing capacity and service life.
Length:
Purpose: To ensure the pipe's length conforms to fixed, multiple, or standard length requirements.
Outer Diameter (OD): Measure the outer diameter at both ends of the fitting to ensure it meets tolerance requirements.
Wall Thickness (WT): Measure the wall thickness at various points on the fitting (especially the outer and inner arcs of elbows, and the transition sections of reducers) to ensure it falls within the permissible deviation.
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 |
CHEMICAL | LIMITS | C | Mn | P | S | Si | Ni | Cr | Mo | N |
ASTM A312 TP904L | MIN | 23.00 | 19.00 | 4.00 | ||||||
MAX | 0.020 | 2.00 | 0.045 | 0.04 | 1.00 | 28.00 | 23.00 | 5.00 | 0.10 |
MATERIAL | T.S (MPA) | Y.S (MPA) | EL % |
ASTM A312 TP904L | 490min | 215min | 35min |
TABLE X1.1 Dimensions of Welded and Seamless Stainless Steel Pipe | ||||||||||
NOTE 1—The decimal thickness listed for the respective pipe sizes represents their nominal or average wall dimensions. | ||||||||||
NPS | Outside Diameter | Nominal Wall Thickness | ||||||||
Designator | in. | mm | Schedule 5SA | Schedule 10SA | Schedule 40S | Schedule 80S | ||||
in. | mm | in. | mm | in. | mm | in. | mm | |||
1/8 | 0.405 | 10.29 | 0.049 | 1.24 | 0.068 | 1.73 | 0.095 | 2.41 | ||
1/4 | 0.540 | 13.72 | 0.065 | 1.65 | 0.088 | 2.24 | 0.119 | 3.02 | ||
3/8 | 0.675 | 17.15 | 0.065 | 1.65 | 0.091 | 2.31 | 0.126 | 3.20 | ||
1/2 | 0.840 | 21.34 | 0.065 | 1.65 | 0.083 | 2.11 | 0.109 | 2.77 | 0.147 | 3.73 |
3/4 | 1.050 | 26.67 | 0.065 | 1.65 | 0.083 | 2.11 | 0.113 | 2.87 | 0.154 | 3.91 |
1 | 1.315 | 33.40 | 0.065 | 1.65 | 0.109 | 2.77 | 0.133 | 3.38 | 0.179 | 4.55 |
1 1/4 | 1.660 | 42.16 | 0.065 | 1.65 | 0.109 | 2.77 | 0.140 | 3.56 | 0.191 | 4.85 |
1 1/2 | 1.900 | 48.26 | 0.065 | 1.65 | 0.109 | 2.77 | 0.145 | 3.68 | 0.200 | 5.08 |
2 | 2.375 | 60.33 | 0.065 | 1.65 | 0.100 | 2.77 | 0.154 | 3.91 | 0.218 | 5.54 |
2 1/2 | 2.875 | 73.03 | 0.083 | 2.11 | 0.120 | 3.05 | 0.203 | 5.16 | 0.276 | 7.01 |
3 | 3.500 | 88.90 | 0.083 | 2.11 | 0.120 | 3.05 | 0.216 | 5.49 | 0.300 | 7.62 |
4 | 4.000 | 101.60 | 0.083 | 2.11 | 0.120 | 3.05 | 0.226 | 5.74 | 0.318 | 8.08 |
4 | 4.500 | 114.30 | 0.083 | 2.11 | 0.120 | 3.05 | 0.237 | 6.02 | 0.337 | 8.56 |
5 | 5.563 | 141.30 | 0.109 | 2.77 | 0.134 | 3.40 | 0.258 | 6.55 | 0.375 | 9.52 |
6 | 6.625 | 168.28 | 0.109 | 2.77 | 0.134 | 3.40 | 0.280 | 7.11 | 0.432 | 10.97 |
8 | 8.625 | 219.08 | 0.109 | 2.77 | 0.148 | 3.76 | 0.322 | 8.18 | 0.500 | 12.70 |
10 | 10.750 | 273.05 | 0.134 | 3.40 | 0.165 | 4.19 | 0.365 | 9.27 | 0.500B | 12.70B |
12 | 12.750 | 323.85 | 0.156 | 3.96 | 0.180 | 4.57 | 0.375B | 9.52B | 0.500B | 12.70B |
Nominal Size | All Fittings | 45°&90° Elbows |
| 180 " | Caps | Reducers & Lap Joint | Lap Joint Stub Ends | ||||||
DN | NPS | OD 3) 4) | ID 3) | A B C M | A B |
| K | U | E, E1 | H F |
| R | t |
15-65 | 1/2 -21/2 | +1.6 | ± 0.8 | ± 2 | ± 3 | ± 6 | ± 6 | ± 1 | ± 3 | ± 2 | 0 | 0 | +1.6 |
80-90 | 3-31/2 | ± 1.6 | ± 1.6 | ± 2 | ± 3 | ± 6 | ± 6 | ± 1 | ± 3 | ± 2 | 0 | 0 | +1.6 |
100 | 4 | ± 1.6 | ± 1.6 | ± 2 | ± 3 | ± 6 | ± 6 | ± 1 | ± 3 | ± 2 | 0 | 0 | +1.6 |
125-200 | 5-8 | +2.4 | ± 1.6 | ± 2 | ± 3 | ± 6 | ± 6 | ± 1 | ± 6 | ± 2 | 0 | 0 | +1.6 |
250-450 | 10-18 | +4.0 | ± 3.2 | ± 2 | ± 3 | ± 10 | ± 6 | ± 2 | ± 6 | ± 2 | 0 | 0 | +3.2 |
500-600 | 20-24 | +6.4 | ± 4.8 | ± 2 | ± 3 | ± 10 | ± 6 | ± 2 | ± 6 | ± 2 | 0 | 0 | +3.2 |
650-750 | 26-30 | +6.4 | ± 4.8 | ± 3 | ± 6 | --- | --- | --- | ± 10 | ± 5 | --- | --- | --- |
800-1200 | 32-48 | +6.4 | ± 4.8 | ± 5 | ± 6 | --- | --- | --- | ± 10 | ± 5 | --- | --- | --- |
1300-1500 | 52-60 | +6.4 | ± 4.8 | ± 5 | --- | --- | --- | --- | --- | --- | --- | --- | --- |
1600-1700 | 64-68 | +6.4 | ± 4.8 | ± 5 | --- | --- | --- | --- | --- | --- | --- | --- | --- |
1800-2000 | 72-80 | +6.4 | ± 4.8 | ± 5 | --- | --- | --- | --- | --- | --- | --- | --- | --- |
Exceptional Corrosion Resistance: Unmatched performance in aggressive acidic and chloride-containing environments.
Resistance to Localized Corrosion: High resistance to pitting and crevice corrosion, which are common failure modes in less alloyed stainless steels.
Stress Corrosion Cracking Resistance: Superior resistance compared to standard austenitic grades due to its high nickel content.
Good Weldability: Allows for ease of fabrication and joining in complex piping systems.
Excellent Formability: Can be easily fabricated into various shapes and sizes.
Ductility and Toughness: Maintains good mechanical properties even at low temperatures.
Longer Service Life: Leads to reduced maintenance costs and downtime in harsh applications.
- Chemical processing (especially sulfuric acid handling)
- Seawater and marine environments
- Pharmaceutical equipment
- Heat exchangers, condensers, and reactors
- Pulp and paper industry
- Gas scrubbing systems
