Home > Products > Industrial Pipeline Series > Stainless Steel Seamless Pipes Tp321 ASTM A321/A312M Stainless Welded Steel Pipe A312 316L TP304L A321 TP304 TP304H N08904 JIS G3459
Stainless Steel Seamless Pipes Tp321 ASTM A321/A312M Stainless Welded Steel Pipe A312 316L TP304L A321 TP304 TP304H N08904 JIS G3459
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Product Details
Type | Stainless Steel Pipes | Certification | ISO, ROHS, IBR, AISI, ASTM, GB, EN, DIN, JIS, Other | |
Shape | Round | Grade | Other | |
Technique | Other | Surface Treatment | Polished | |
Standard | ASTM, AISI, GB, JIS, DIN, EN, Other | Specification | OEM | |
Trademark | ZHONGZHENG INTERNATIONAL | Origin | China |
Product Description
316L TP304 BA clean pipe
stainless steel 304l pipe in the high-temperature range due to its better strength and formability. Moreover, it can be welded in place using standard shop fabrication procedures. Stainless 321 Pipe is also resistant to aqueous corrosion and subsequent aqueous corrosion. Usually, it is used in functions between 800 and 1650 Degrees C.
Aside from its machinability, the SS 321 Steel is resistant to atmospheric corrosion, inorganic chemicals, and chlorides. Stainless 321 is suitable for use in applications that involve high temperatures. SS 321 Pipe is a preferred choice in the high-temperature range over SS 304L Pipes due to its better strength and formability. Moreover, it can be welded in place using standard shop fabrication procedures. Stainless 321 Pipe is also resistant to aqueous corrosion and subsequent aqueous corrosion. Usually, it is used in functions between 800 and 1650 Degrees C.
Stainless steel is an alloy, which is iron-based and contains various combinations of other elements to give it characteristics suitable for a wide range of applications. The element that makes stainless steel stainless is chromium. By definition, any steel, which contains a minimum of 11% chromium, is a stainless steel. The chromium content in the steel produces a rich,transparent oxide film, which coats the steel and protects it from corrosion and oxidation.
Standard | ASTM A312 / A213 / A269 / A789 / A790 |
OD Range | 9.5mm-210mm |
TK Range | 0.24mm-3.0mm |
Surface Finish | Pickled, Sandblast, Polishing |
Type | Seamless or Welded |
Grade | 201, 202, 304/304L, 309S, 310S, 316/316L, 321, 321H, 317L, 316Ti, S31803, S32205, 904L etc. |
Application | Widely used in petroleum,foodstuff,chemical industry,construction, electric power, nuclear, |
Advantage | Advanced production technology/Excellent r&d management team/Sophisticated production equipment/Constant pursuit of high-quality goods/First-class after-sales service |
Normal pipe size | OD | Normal wall thickness | |||||||||||||
DN | inch | ASME | SCH10 | SCH20 | SCH30 | STD | SCH40 | SCH60 | XS | SCH80 | SCH100 | SCH120 | SCH140 | SCH160 | XXS |
15 | 1/2 | 21.3 | 2.11 | 2.41 | 2.77 | 2.77 | 3.73 | 3.73 | 4.78 | 7.47 | |||||
20 | 3/4 | 26.7 | 2.11 | 2.41 | 2.87 | 2.87 | 3.91 | 3.91 | 5.56 | 7.82 | |||||
25 | 1 | 33.4 | 2.77 | 2.9 | 3.38 | 3.38 | 4.55 | 4.55 | 6.35 | 9.09 | |||||
32 | 1.25 | 42.2 | 2.77 | 2.97 | 3.56 | 3.56 | 4.85 | 4.85 | 6.35 | 9.7 | |||||
40 | 1.5 | 48.3 | 2.77 | 3.18 | 3.68 | 3.68 | 5.08 | 5.08 | 7.14 | 10.15 | |||||
50 | 2 | 60.3 | 2.77 | 3.18 | 3.91 | 3.91 | 5.54 | 5.54 | 8.74 | 11.07 | |||||
65 | 2.5 | 73 | 3.05 | 4.78 | 5.16 | 5.16 | 7.01 | 7.01 | 9.53 | 14.02 | |||||
80 | 3 | 88.9 | 3.05 | 4.78 | 5.49 | 5.49 | 7.62 | 7.62 | 11.13 | 15.25 | |||||
90 | 3.5 | 101.6 | 3.05 | 4.78 | 5.74 | 5.74 | 8.08 | 8.08 | |||||||
100 | 4 | 114.3 | 3.05 | 4.78 | 6.02 | 6.02 | 8.56 | 8.56 | 11.13 | 13.49 | 17.12 | ||||
125 | 5 | 141.3 | 3.4 | 6.55 | 6.55 | 9.53 | 9.53 | 12.7 | 15.88 | 19.05 | |||||
150 | 6 | 168.3 | 3.4 | 7.11 | 7.11 | 10.97 | 10.97 | 14.27 | 18.26 | 21.95 | |||||
200 | 8 | 219.1 | 3.76 | 6.35 | 7.04 | 8.18 | 8.18 | 10.31 | 12.7 | 12.7 | 15.09 | 18.26 | 20.62 | 23.01 | 22.23 |
250 | 10 | 273 | 4.19 | 6.35 | 7.8 | 9.27 | 9.27 | 12.7 | 12.7 | 15.09 | 18.26 | 21.44 | 25.4 | 18.58 | 25.4 |
300 | 12 | 323.8 | 4.57 | 6.35 | 8.38 | 9.53 | 10.31 | 14.27 | 12.7 | 17.48 | 21.44 | 25.4 | 28.58 | 33.32 | 25.4 |
350 | 14 | 355.6 | 6.35 | 7.92 | 9.53 | 9.53 | 11.13 | 15.09 | 12.7 | 19.05 | 23.83 | 27.79 | 31.75 | 35.71 | |
400 | 16 | 406.4 | 6.35 | 7.92 | 9.53 | 9.53 | 12.7 | 16.66 | 12.7 | 21.44 | 26.19 | 30.96 | 36.53 | 40.19 | |
450 | 18 | 457.2 | 6.35 | 7.92 | 11.13 | 9.53 | 14.27 | 19.05 | 12.7 | 23.83 | 39.36 | 34.93 | 39.67 | 45.24 | |
500 | 20 | 508 | 6.35 | 9.53 | 12.7 | 9.53 | 15.09 | 20.62 | 12.7 | 26.19 | 32.54 | 38.1 | 44.45 | 50.01 | |
550 | 22 | 558.8 | 6.35 | 9.53 | 12.7 | 9.53 | 22.23 | 12.7 | 28.58 | 34.93 | 41.28 | 47.63 | 53.98 | ||
600 | 24 | 609.6 | 6.35 | 9.53 | 14.27 | 9.53 | 17.48 | 24.61 | 12.7 | 30.96 | 38.89 | 46.02 | 52.37 | 59.54 | |
650 | 26 | 660.4 | 7.92 | 12.7 | 9.53 | 12.7 | |||||||||
700 | 28 | 711.2 | 7.92 | 12.7 | 15.88 | 9.53 | 12.7 | ||||||||
750 | 30 | 762 | 7.92 | 12.7 | 15.88 | 9.53 | 12.7 | ||||||||
800 | 32 | 812.8 | 7.92 | 12.7 | 15.88 | 9.53 | 17.48 | 12.7 | |||||||
850 | 34 | 863.6 | 7.92 | 12.7 | 15.88 | 9.53 | 17.48 | 12.7 | |||||||
900 | 36 | 914.4 | 7.92 | 12.7 | 15.88 | 9.53 | 19.05 | 12.7 |
The 304 stainless steel pipes are one of the most used products in the piping applications. The SS 304 pipes differ in material grades, dimensions and in the finishing and mechanical properties. 304 is the most used stainless steel product. There are cold worked and annealed types of pipes in the 304 grade of steel.
There are different procedures involving the making of these different types of AISI 304 pipes. The cold worked pipes are drawn from raw material. They are not forged or formed through welding. They are drawn to shape during production. This process involves heating and allowing the material to cool while drawing it to the desired shape. There are ? hard, ? hard, ? hard and full hard types.
The cold worked SS 304 pipe could be reheated to gain temper and to increase ductility. The annealing process can be solution annealing or bright annealing. These processes involve heating of the material to certain temperature and then allowing the material to cool rapidly but not faster than the rate at which it would cool under air. The solution heat treatment on 304 grade steel can take place in the range of 1010 - 1120 degrees Celsius of heat.
ASTM A312 TP304 Mechanical Properties
Stainless Steel Gr. | 304 |
Rockwell B (HR B) maximum | 92 |
Brinell (HB) maximum | 201 |
Tensile Strength minimum (MPa) | 515 |
Yield Strength 0.2% Proof minimum (MPa) | 205 |
Elongation minimum (% in 50mm) | 40 |
Hardness | - |
A312 TP304 Chemical Composition
SS Grade | 304 | 304N | 304LN |
---|---|---|---|
Ni | 8 – 11 | 8 – 11 | 8 – 11 |
Fe | Balance | ||
Cr | 18 – 20 | 18 – 20 | 18 – 20 |
C | 0.08 max | 0.08 max | 0.035 max |
Si | 0.75 max | 0.75 max | 0.75 max |
Mn | 2 max | 2 max | 2 max |
P | 0.040 max | 0.040 max | 0.040 max |
S | 0.030 max | 0.030 max | 0.030 max |
N | 0.10 – 0.16 | 0.10 – 0.16 |
SA 312 TP 304 Equivalent
GRADE | UNS | EN | JIS | AFNOR | BS | WERKSTOFF NR. | GOST | SS |
UNDER | USA | EUROPE | JAPAN | RUSSIAN | BRITISH | GERMAN | RUSSIAN | SWEDISH |
ASTM A312 TP 304 | S30400 | X5CrNi18-10 | SUS 304 | Z7CN18‐09 | 304S31 | 1.4301 | 08Х18Н10 | 2332 |
304 Stainless Steel Pipe Tolerances
Nominal Pipe Size (NPS) | ASTM A312 304 Welded Pipe |
---|---|
IPS 1/4 to 1-1/2 | +.015/-.031 |
IPS 2 to 4 | +.031/-.031 |
IPS 5 to 8 | +.093/-.031 |
SA312 TP304 Density
Density (kg/m3) | 8000 |
HS Code For stainless steel pipe 304
Product | Country | HS Code |
---|---|---|
304 Stainless Steel Pipe | Malaysia | 73049000 |
Maldives | 73042400 | |
Netherlands | 73044100 | |
Singapore | 73049000 | |
Italy | 73044100 | |
Oman | 73049000 | |
Qatar | 73041990 | |
China | 73041110 | |
United Arab Emirates (UAE) | 73041990 | |
Saudi Arabia (KSA) | 73049000 |
Company Profile

Zhongzheng Stainless Steel Co., Ltd. is a China-based manufacturer specializing in R&D, production, and distribution of stainless steel products. Established in the early 2000s, it serves industries including construction, machinery, food/medical equipment, and energy with precision tubes, sheets, profiles, and custom components.
Contact Us
- Zhongzheng Stainless Steel Co., Ltd.
- Contact nameLaijing Bu Chat Now
- AddressRoom 104-07, Building 5, Jinghu Technology Park Huanajinghu Garden, Donglihu Subdistrict Dongli District,
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