Duplex Steel Pipes & Tubes
Duplex Steel pipe and tubes are meant to outperform typical austenitic stainless steels like Type 304 or 316 in terms of corrosion resistance, particularly chloride stress corrosion and chloride pitting corrosion, as well as strength. Intergranular and pitting corrosion resistance is enhanced by the chemical composition of Duplex Steel Seamless Pipes, which incorporates significant amounts of Cr and Mo. Nitrogen additions to Duplex Steel Welded Tubes can improve structural hardening through an interstitial solid solution process, increasing yield and ultimate strength without compromising toughness. Duplex Steel Welded Pipes and Tubes are used in a variety of industries, including the chemical, oil, and food industries, paper and pulp industries, pollution control industries, flow line pipe industries, and Christmas tree pipeline industries, and more.
Specification of Pipes & Tubes
| Specification | ASTM A790, A789 / ASME SA789, SA789 |
|---|---|
| Seamless Pipes & Tubes Size | 1 / 8″ NB – 24″ NB |
| ERW Pipes & Tubes Size | 1 / 8″ NB – 36″ NB |
| EFW Pipes & Tubes Size | 6″ NB – 100″ NB |
| Standard | ASTM, ASME and API |
| Length | Single Random, Double Random & Required Length |
| Outer Diameter | 6.00 mm OD up to 914.4 mm OD, Sizes up to 24” NB |
| Thickness | 0.3mm – 50 mm |
| Schedule | SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
| Types | Seamless / ERW / EFW / Welded / Fabricated / LSAW Pipes |
| Form | Round Pipes/Tubes, Square Pipes/Tubes, Rectangular Pipe/Tubes, Coiled Tubes, “U” Shape, Pan Cake Coils, Hydraulic Tubes |
| End | Plain End, Beveled End, Treaded |
Duplex steel S31803 pipes and tubes
S31803 duplex stainless steel tubes offer exceptional corrosion resistance, making them exemplary for applications in marine environments, chemical processing, and other industries. They are known for their high durability and strength compared to traditional steels and ease of fabrication. Moreover, these tubes require far less maintenance than other metal materials due to their superior corrosion resistance. This lower maintenance cost, combined with its good mechanical properties, gives users an economical and practical solution for projects requiring excellent performance over a long period. Given all these advantages, S31803 duplex stainless steel tubes have become the metal material of choice in many industries.
Specification of S31803 duplex stainless steel tubes
| Specification | ASTM A790, A789 / ASME SA789, SA789 |
|---|---|
| Seamless Pipes & Tubes Size | 1 / 8″ NB – 24″ NB |
| ERW Pipes & Tubes Size | 1 / 8″ NB – 36″ NB |
| EFW Pipes & Tubes Size | 6″ NB – 100″ NB |
| Standard | ASTM, ASME and API |
| Length | Single Random, Double Random & Required Length |
| Outer Diameter | 6.00 mm OD up to 914.4 mm OD, Sizes up to 24” NB |
| Thickness | 0.3mm – 50 mm |
| Schedule | SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
| Types | Seamless / ERW / EFW / Welded / Fabricated / LSAW Pipes |
| Form | Round Pipes/Tubes, Square Pipes/Tubes, Rectangular Pipe/Tubes, Coiled Tubes, “U” Shape, Pan Cake Coils, Hydraulic Tubes |
| End | Plain End, Beveled End, Treaded |
Equivalent Grades Of Duplex Steel S31803 Pipes / Tubes
| STANDARD | UNS | WERKSTOFF NR. |
| Duplex Steel | S31803 | 1.4462 |
Duplex Steel S31803 Pipes / Tubes Chemical Composition
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
| S31803 | 0.030 max | 2.00 max | 1.00 max | 0.030 max | 0.020 max | 22.0 – 23.0 | 3.0 – 3.5 | 4.50 – 6.50 | 0.14 – 0.20 | 63.72 min |
S31803 Duplex Steel Pipes / Tubes Mechanical Properties
| Grade | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| S31803 | 7.8 g/cm3 | 1350 °C (2460 °F) | Psi – 116000 , MPa – 800 | Psi – 80000 , MPa – 550 | 15 % |
Duplex Steel S31803 Seamless Pipe Weight Chart
| NPS (DN) |
WEIGHT LB/FT (KG/M) |
SCH | Outside Diameter IN (Milimeter) |
ID | WT IN (Milimeter) |
| 32 (800) |
84.085 (126.032) |
.0.0.0 | 32.00 (813) |
.0.0.0 | 0.025 (6.035) |
| 32 (800) |
95.028 (141.09) |
.0.0.0 | 32.00 (813) |
.0.0.0 | 0.0281 (7.014) |
| 32 (800) |
105.069 (157.025) |
10 | 32.00 (813) |
.0.0.0 | 0.0312 (7.092) |
| 32 (800) |
116.041 (173.035) |
.0.0.0 | 32.00 (813) |
.0.0.0 | 0.0344 (8.074) |
| 32 (800) |
126.078 (188.083) |
.0.0.0 | 32.00 (813) |
STD | 0.0375 (9.053) |
| 32 (800) |
137.012 (204.009) |
.0.0.0 | 32.00 (813) |
.0.0.0 | 0.0406 (10.031) |
| 32 (800) |
147.078 (220.01) |
.0.0.0 | 32.00 (813) |
.0.0.0 | 0.0438 (11.013) |
| 32 (800) |
158.008 (235.029) |
.0.0.0 | 32.00 (813) |
.0.0.0 | 0.0469 (11.091) |
| 32 (800) |
168.037 (250.065) |
20 | 32.00 (813) |
XS | 0.05 (12.07) |
| 32 (800) |
188.087 (281.009) |
.0.0.0 | 32.00 (813) |
.0.0.0 | 0.0562 (14.027) |
| 32 (800) |
209.062 (312.017) |
30 | 32.00 (813) |
.0.0.0 | 0.0625 (15.088) |
| 32 (800) |
230.029 (342.094) |
40 | 32.00 (813) |
.0.0.0 | 0.0688 (17.048) |
| 32 (800) |
250.055 (373.00) |
.0.0.0 | 32.00 (813) |
.0.0.0 | 0.075 (19.005) |
| 32 (800) |
270.072 (402.094) |
.0.0.0 | 32.00 (813) |
.0.0.0 | 0.0812 (20.062) |
| 32 (800) |
291.014 (433.052) |
.0.0.0 | 32.00 (813) |
.0.0.0 | 0.0875 (22.023) |
| 32 (800) |
311.047 (463.078) |
.0.0.0 | 32.00 (813) |
.0.0.0 | 0.0938 (23.083) |
| 32 (800) |
331.039 (493.035) |
.0.0.0 | 32.00 (813) |
.0.0.0 | 1.00 (25.04) |
| 32 (800) |
351.023 (522.08) |
.0.0.0 | 32.00 (813) |
.0.0.0 | 1.0062 (26.097) |
| 32 (800) |
371.031 (552.088) |
.0.0.0 | 32.00 (813) |
.0.0.0 | 1.0125 (28.058) |
| 32 (800) |
391.03 (582.064) |
.0.0.0 | 32.00 (813) |
.0.0.0 | 1.0188 (30.018) |
| 32 (800) |
410.09 (611.072) |
.0.0.0 | 32.00 (813) |
.0.0.0 | 1.025 (31.075) |
| 34 (850) |
90.02 (134.031) |
.0.0.0 | 34.00 (864) |
.0.0.0 | 0.025 (6.035) |
| 34 (850) |
101.029 (150.088) |
.0.0.0 | 34.00 (864) |
.0.0.0 | 0.0281 (7.014) |
| 34 (850) |
112.036 (167.021) |
10 | 34.00 (864) |
.0.0.0 | 0.0312 (7.092) |
| 34 (850) |
123.077 (184.034) |
.0.0.0 | 34.00 (864) |
.0.0.0 | 0.0344 (8.074) |
| 34 (850) |
134.079 (200.082) |
.0.0.0 | 34.00 (864) |
STD | 0.0375 (9.053) |
| 34 (850) |
145.08 (217.006) |
.0.0.0 | 34.00 (864) |
.0.0.0 | 0.0406 (10.031) |
| 34 (850) |
157.014 (234.01) |
.0.0.0 | 34.00 (864) |
.0.0.0 | 0.0438 (11.013) |
| 34 (850) |
168.011 (250.027) |
.0.0.0 | 34.00 (864) |
.0.0.0 | 0.0469 (11.091) |
| 34 (850) |
179.006 (266.063) |
20 | 34.00 (864) |
XS | 0.05 (12.07) |
| 34 (850) |
200.089 (299.004) |
.0.0.0 | 34.00 (864) |
.0.0.0 | 0.0562 (14.027) |
| 34 (850) |
222.099 (332.014) |
30 | 34.00 (864) |
.0.0.0 | 0.0625 (15.088) |
| 34 (850) |
245.00 (364.092) |
40 | 34.00 (864) |
.0.0.0 | 0.0688 (17.048) |
| 34 (850) |
266.058 (396.096) |
.0.0.0 | 34.00 (864) |
.0.0.0 | 0.075 (19.005) |
| 34 (850) |
288.008 (428.088) |
.0.0.0 | 34.00 (864) |
.0.0.0 | 0.0812 (20.062) |
| 34 (850) |
309.084 (461.048) |
.0.0.0 | 34.00 (864) |
.0.0.0 | 0.0875 (22.023) |
| 34 (850) |
331.052 (493.075) |
.0.0.0 | 34.00 (864) |
.0.0.0 | 0.0938 (23.083) |
| 34 (850) |
352.077 (525.03) |
.0.0.0 | 34.00 (864) |
.0.0.0 | 1.00 (25.04) |
| 34 (850) |
373.094 (556.073) |
.0.0.0 | 34.00 (864) |
.0.0.0 | 1.0062 (26.097) |
| 34 (850) |
395.036 (588.083) |
.0.0.0 | 34.00 (864) |
.0.0.0 | 1.0125 (28.058) |
| 34 (850) |
416.07 (620.06) |
.0.0.0 | 34.00 (864) |
.0.0.0 | 1.0188 (30.018) |
| 34 (850) |
437.062 (651.065) |
.0.0.0 | 34.00 (864) |
.0.0.0 | 1.025 (31.075) |
| 36 (900) |
95.054 (142.014) |
.0.0.0 | 36.00 (914) |
.0.0.0 | 0.025 (6.035) |
| 36 (900) |
107.03 (159.068) |
.0.0.0 | 36.00 (914) |
.0.0.0 | 0.0281 (7.014) |
| 36 (900) |
119.003 (176.097) |
10 | 36.00 (914) |
.0.0.0 | 0.0312 (7.092) |
| 36 (900) |
131.012 (195.012) |
.0.0.0 | 36.00 (914) |
.0.0.0 | 0.0344 (8.074) |
| 36 (900) |
142.081 (212.057) |
.0.0.0 | 36.00 (914) |
STD | 0.0375 (9.053) |
| 36 (900) |
154.048 (229.077) |
.0.0.0 | 36.00 (914) |
.0.0.0 | 0.0406 (10.031) |
| 36 (900) |
166.051 (247.082) |
.0.0.0 | 36.00 (914) |
.0.0.0 | 0.0438 (11.013) |
| 36 (900) |
178.014 (264.096) |
.0.0.0 | 36.00 (914) |
.0.0.0 | 0.0469 (11.091) |
| 36 (900) |
189.075 (282.029) |
20 | 36.00 (914) |
XS | 0.05 (12.07) |
| 36 (900) |
212.09 (316.063) |
.0.0.0 | 36.00 (914) |
.0.0.0 | 0.0562 (14.027) |
| 36 (900) |
236.035 (351.073) |
30 | 36.00 (914) |
.0.0.0 | 0.0625 (15.088) |
| 36 (900) |
259.071 (386.047) |
.0.0.0 | 36.00 (914) |
.0.0.0 | 0.0688 (17.048) |
| 36 (900) |
282.062 (420.045) |
40 | 36.00 (914) |
.0.0.0 | 0.075 (19.005) |
| 36 (900) |
305.044 (454.03) |
.0.0.0 | 36.00 (914) |
.0.0.0 | 0.0812 (20.062) |
| 36 (900) |
328.055 (488.089) |
.0.0.0 | 36.00 (914) |
.0.0.0 | 0.0875 (22.023) |
| 36 (900) |
351.057 (523.014) |
.0.0.0 | 36.00 (914) |
.0.0.0 | 0.0938 (23.083) |
| 36 (900) |
374.015 (556.062) |
.0.0.0 | 36.00 (914) |
.0.0.0 | 1.00 (25.04) |
| 36 (900) |
396.064 (589.098) |
.0.0.0 | 36.00 (914) |
.0.0.0 | 1.0062 (26.097) |
| 36 (900) |
419.042 (624.007) |
.0.0.0 | 36.00 (914) |
.0.0.0 | 1.0125 (28.058) |
| 36 (900) |
442.01 (657.081) |
.0.0.0 | 36.00 (914) |
.0.0.0 | 1.0188 (30.018) |
| 36 (900) |
464.035 (690.08) |
.0.0.0 | 36.00 (914) |
.0.0.0 | 1.025 (31.075) |
| 38 (950) |
125.07 (186.094) |
.0.0.0 | 38.00 (965) |
.0.0.0 | 0.0312 (7.092) |
| 38 (950) |
138.047 (206.011) |
.0.0.0 | 38.00 (965) |
.0.0.0 | 0.0344 (8.074) |
| 38 (950) |
150.083 (224.056) |
.0.0.0 | 38.00 (965) |
STD | 0.0375 (9.053) |
| 38 (950) |
163.016 (242.074) |
.0.0.0 | 38.00 (965) |
.0.0.0 | 0.0406 (10.031) |
| 38 (950) |
175.087 (261.082) |
.0.0.0 | 38.00 (965) |
.0.0.0 | 0.0438 (11.013) |
| 38 (950) |
188.017 (279.094) |
.0.0.0 | 38.00 (965) |
.0.0.0 | 0.0469 (11.091) |
| 38 (950) |
200.044 (298.026) |
.0.0.0 | 38.00 (965) |
XS | 0.05 (12.07) |
| 38 (950) |
224.092 (334.058) |
.0.0.0 | 38.00 (965) |
.0.0.0 | 0.0562 (14.027) |
| 38 (950) |
249.071 (371.07) |
.0.0.0 | 38.00 (965) |
.0.0.0 | 0.0625 (15.088) |
| 38 (950) |
274.042 (408.046) |
.0.0.0 | 38.00 (965) |
.0.0.0 | 0.0688 (17.048) |
| 38 (950) |
298.065 (444.041) |
.0.0.0 | 38.00 (965) |
.0.0.0 | 0.075 (19.005) |
| 38 (950) |
322.08 (480.024) |
.0.0.0 | 38.00 (965) |
.0.0.0 | 0.0812 (20.062) |
| 38 (950) |
347.026 (516.085) |
.0.0.0 | 38.00 (965) |
.0.0.0 | 0.0875 (22.023) |
| 38 (950) |
371.063 (553.011) |
.0.0.0 | 38.00 (965) |
.0.0.0 | 0.0938 (23.083) |
| 38 (950) |
395.053 (588.057) |
.0.0.0 | 38.00 (965) |
.0.0.0 | 1.00 (25.04) |
| 38 (950) |
419.035 (623.09) |
.0.0.0 | 38.00 (965) |
.0.0.0 | 1.0062 (26.097) |
| 38 (950) |
443.047 (660.001) |
.0.0.0 | 38.00 (965) |
.0.0.0 | 1.0125 (28.058) |
| 38 (950) |
467.05 (695.077) |
.0.0.0 | 38.00 (965) |
.0.0.0 | 1.0188 (30.018) |
| 38 (950) |
491.007 (730.074) |
.0.0.0 | 38.00 (965) |
.0.0.0 | 1.025 (31.075) |
Duplex Steel S32205 pipe and tube
These Duplex steel S32205 pipes and tubes can withstand high-temperature ranges and along with that, they are also corrosion resistant in a variety of temperature ranges even in the presence of acidic substances. This grade of pipes and tubes are known for their robust construction, sturdy body, good hardness, durability and many more. These pipes and tubes have high tensile strength and high-performance ability. These pipes are also leak-free and intact along with their other excellent features. These pipes and tubes come with a seal that makes them leak safe and gas leak safe. These pipes and tubes have easy installation and are popular in multiple industries.
Specification For DSS S32205 Pipes / Tubes
| Specification | ASTM A790, A789 / ASME SA789, SA789 |
|---|---|
| Seamless Pipes & Tubes Size | 1 / 8″ NB – 24″ NB |
| ERW Pipes & Tubes Size | 1 / 8″ NB – 36″ NB |
| EFW Pipes & Tubes Size | 6″ NB – 100″ NB |
| Standard | ASTM, ASME and API |
| Length | Single Random, Double Random & Required Length |
| Outer Diameter | 6.00 mm OD up to 914.4 mm OD, Sizes up to 24” NB |
| Thickness | 0.3mm – 50 mm |
| Schedule | SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
| Types | Seamless / ERW / EFW / Welded / Fabricated / LSAW Pipes |
| Form | Round Pipes/Tubes, Square Pipes/Tubes, Rectangular Pipe/Tubes, Coiled Tubes, “U” Shape, Pan Cake Coils, Hydraulic Tubes |
| End | Plain End, Beveled End, Treaded |
Equivalent Grades Of Duplex Steel S32205 Pipes / Tubes
| STANDARD | UNS | WERKSTOFF NR. |
| Duplex 2205 | S32205 | 1.4462 |
Duplex Steel S32205 Pipes / Tubes Chemical Composition
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
| S32205 | 0.030 max | 2.00 max | 1.00 max | 0.030 max | 0.020 max | 21.0 – 23.0 | 2.50 - 3.50 | 4.50 – 6.50 | 0.8 – 0.20 | 63.54 min |
S32205 Duplex Steel Pipes / Tubes Mechanical Properties
| Grade | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| S32205 | 7.8 g/cm3 | 1350 °C (2460 °F) | Psi – 116000 , MPa – 800 | Psi – 80000 , MPa – 550 | 15 % |
Duplex Steel S32205 Tubes Pressure Rating
| Tube O.D. (in.) | Wall Thickness of Tube (inches) | |||||||
| .028 | .035 | .049 | .065 | .083 | .095 | .109 | .120 | |
| Working Pressure (psig) | ||||||||
| 1/8 | 7900 | 10100 | ||||||
| 1/4 | 3700 | 4800 | 7000 | 9500 | ||||
| 5/16 | 3700 | 5400 | 7300 | |||||
| 3/8 | 3100 | 4400 | 6100 | |||||
| 1/2 | 2300 | 3200 | 4400 | |||||
| 3/4 | 2200 | 3000 | 4000 | 4600 | ||||
| 1 | 2200 | 2900 | 3400 | 3900 | 4300 | |||