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ท่อสแตนเลสไร้ตะเข็บ ASTM A312 TP304 is an austenitic alloy grade designed with a superior composition of nickel and chromium. The ASTM A312 TP304 alloy has excellent resistance against corrosive and oxidative media across stress-induced environments. The versatile grade of alloys has outstanding mechanical properties. They have a minimum tensile strength of 75ksi with a minimum yield strength of 30Ksi. The ASTM A312 Grade TP304 Seamless Pipe can be processed via the hot or cold rolling process. These pipes can be availed in thickness between 0.8mm up to 12mm and can be availed in different sizes and dimensions to meet project requirements.
The components in this grade are produced in seamless, welded, and ERW configurations. Each of these modules has its own set of features allowing them to be used in different applications. The ASME SA 312 TP 304 Seamless Pipe is produced via an extrusion process wherein hot steel billets are passed through the metal. ท่อสแตนเลสไร้ตะเข็บ ASTM A312 TP304 allows the material the capability to work in high temperatures and pressures. More over these pipes are slightly expensive as compared to welded pipes.
Equivalent of ASTM A312 TP304 Seamless Pipe
Equivalent GRADE
| GRADE | UNS | EN | JIS | เอเอฟเอ็นโอ | BS | หมายเลขวัสดุ. | GOST | SS |
| UNDER | สหรัฐอเมริกา | EUROPE | JAPAN | RUSSIAN | BRITISH | GERMAN | RUSSIAN | SWEDISH |
| ASTM A312 TP 304 | S30400 | X5CrNi18-10 | SUS 304 | Z7CN18‐09 | 304S31 | 1.4301 | 08Х18Н10 | 2332 |
ASTM A312 TP304 stainless steel chemical composition
องค์ประกอบทางเคมี
| เกรด | C | Mn | P | S | ซี | นี | Cr | Fe |
| TP304 | 0.08 | 2.00 | 0.045 | 0.030 | 1.0 | 8-11 | 18-20 | บาล. |
ASTM A312 TP304 stainless steel mechanical properties
Mechanical properties chart
| Tensile strength(Mpa) MaxYield point(Mpa) Max | Elongation(%) | Hardness (HRB) Max | ||||
| TP304 | 515 | 205 | 35 | 92 | ||
SS 304 Seamless Pipes Physical Properties
Physical Properties Chart
| rade | ความหนาแน่น (กก./ลบ.ม.) | ความร้อนจำเพาะ 0-1000C (จูลต่อกิโลกรัมต่อเคลวิน) | โมดูลัสยืดหยุ่น (กิกะปาสคาล) | ค่าเฉลี่ยสัมประสิทธิ์การขยายตัวทางความร้อน (มม./ม./องศาเซลเซียส) | การนำความร้อน (วัตต์ต่อเมตรเคลวิน) | ความต้านทานไฟฟ้า (คำนาม) | |||
| 0-100°C | 0-315°C | 0-538°C | ที่ 100°C | ที่ 500°C | |||||
| 304 | 8000 | 500 | 193 | 17.2 | 17.8 | 18.4 | 16.2 | 21.5 | 720 |
ASTM A312 TP304 Seamless Pipe Schedule Chart
Schedule Change to inch/mm Chart
| Nominal Pipe Size (NPS) | STD SCH 40S | SCH 0S | SCH 120 | XS SCH 80S | XXS | Outside Diameter (mm) | SCH 160 |
| 1/8″ | 1.073 0.037 | 2.041 0.048 | 10.029 | ||||
| 1/4″ | 2.024 0.064 | 1.065 0.048 | 3.002 0.081 | 13.072 | |||
| 3/8″ | 2.031 0.086 | 1.065 0.064 | 3.020 1.012 | 17.015 | |||
| 1/2″ | 2.077 1.029 | 2.011 1.001 | 3.073 1.064 | 7.047 2.065 | 21.034 | 4.076 1.098 | |
| 3/4″ | 2.087 1.071 | 2.011 1.030 | 3.091 2.023 | 7.082 3.069 | 26.067 | 5.056 2.094 | |
| 1″ | 3.038 2.054 | 2.077 2.012 | 4.055 3.028 | 9.009 5.075 | 33.040 | 6.035 4.030 | |
| 1 1/4 นิ้ว | 3.056 3.043 | 2.077 2.073 | 4.085 3.053 | 9.070 7.088 | 42.016 | 6.035 5.069 | |
| 1 1/2 นิ้ว | 3.068 3.011 | 2.077 3.015 | 5.008 5.049 | 10.016 9.069 | 48.026 | 7.014 7.034 | |
| 2 นิ้ว | 3.091 5.052 | 2.077 3.098 | 5.054 7.059 | 11.007 13.065 | 60.033 | 8.074 11.028 | |
| 2 1/2 นิ้ว | 5.016 8.076 | 3.005 5.034 | 7.001 11.058 | 73.003 | 9.053 15.014 | ||
| 3 นิ้ว | 5.049 11.045 | 3.005 6.054 | 7.062 15.050 | 15.024 28.009 | 88.090 | 11.013 21.065 | |
| 3 1/2 นิ้ว | 5.074 13.077 | 3.005 7.052 | 8.008 18.090 | 101.060 | |||
| 4 นิ้ว | 6.002 16.031 | 3.005 8.048 | 11.013 28.032 | 8.056 22.065 | 17.012 41.063 | 114.030 | 13.049 34.002 |
| 5 นิ้ว | 6.055 22.010 | 3.040 11.074 | 9.052 31.041 | 141.060 | 15.088 49.083 | ||
| 6 นิ้ว | 7.011 28.068 | 3.040 14.004 | 14.027 54.020 | 10.097 43.019 | 21.095 80.036 | 168.026 | 18.026 68.056 |
| 8 นิ้ว | 8.018 43.016 | 3.076 20.025 | 23.001 112.090 | 12.070 65.059 | 219.008 | 18.026 90.044 | |
| 10 นิ้ว | 9.027 61.020 | 4.019 28.020 | 12.070 81.055 | 273.005 | 28.058 174.082 | ||
| 12 นิ้ว | 9.053 74.092 | 4.057 36.053 | 323.085 | 12.070 97.046 |
ASME SA 312 TP 304 Pipes Weight Chart
| PIPE SIZE | OD IN INCHES | A.S.A. Pipe Schedules | |||||||||||
| 5s | 5 | 10s | 10 | 40s & Std. | 40 | 60 | 80s & E.H. | 80 | 120 | 160 | DBL E.H. | ||
| 1/8 | .405 | .035.1383 | .049.1863 | .049.1863 | .068.2447 | 068.2447 | 0.95.3145 | 0.95.3145 | |||||
| 1/4 | .540 | .049.2570 | .065.3297 | .065.3297 | .088.4248 | 088.4248 | .119.5351 | .119.5351 | |||||
| 3/8 | .675 | .049.3276 | .065.4235 | .065.4235 | .091.5676 | .091.5676 | .126.7338 | .126.7338 | |||||
| 1/2 | .840 | .065.5383 | .065.5383 | .083.6710 | .083.6710 | .109.8510 | .109.8510 | .1471.088 | .1471.088 | .1871.304 | .2941.714 | ||
| 3/4 | 1.050 | .065.6838 | .065.6838 | .083.8572 | .083.8572 | .1131.131 | .1131.131 | .1541.474 | .1541.474 | .2181.937 | .3082.441 | ||
| 1 | 1.315 | .065.8678 | .065.8678 | .1091.404 | .1091.404 | .1331.679 | .1331.679 | .1792.172 | .1792.172 | .2502.844 | .3583.659 | ||
| 1-1/4 | 1.660 | .0651.107 | .0651.107 | .1091.806 | .1091.806 | .1402.273 | .1402.273 | .1912.997 | .1912.997 | .2503.765 | .3825.214 | ||
| 1-1/2 | 1.900 | .0651.274 | .0651.274 | .1092.085 | .1092.085 | .1452.718 | .1452.718 | .2003.631 | .2003.631 | .2814.859 | .4006.408 | ||
| 2 | 2.375 | .0651.604 | .0651.604 | .1092.638 | .1092.638 | .1543.653 | .1543.653 | .2185.022 | .2185.022 | .3437.444 | .4369.029 | ||
| 2-1/2 | 2.875 | .0832.475 | .0832.475 | .1203.531 | .1203.531 | .2035.793 | .2035.793 | .2767.661 | .2767.661 | .37510.01 | .55213.70 | ||
| 3 | 3.500 | .0833.029 | .0833.029 | .1204.332 | .1204.332 | .2167.576 | .2167.576 | .30010.25 | .30010.25 | .43714.32 | .60018.58 | ||
| 3-1/2 | 4.000 | .0833.472 | .0833.472 | .1204.973 | .1204.973 | .2269.109 | .2269.109 | .31812.51 | .31812.51 | .63622.85 | |||
| 4 | 4.500 | .0833.915 | .0833.915 | .1205.613 | .1205.613 | .23710.79 | .23710.79 | .28112.66 | .33714.98 | .33714.98 | .43719.01 | .53122.51 | .67427.54 |
| 4-1/2 | 5.000 | .24712.53 | .35517.61 | .71032.53 | |||||||||
| 5 | 5.563 | .1096.349 | .1096.349 | .1347.770 | .1347.770 | .25814.62 | .25814.62 | .37520.78 | .37520.78 | .50027.04 | .62532.96 | .75038.55 | |
| 6 | 6.625 | .1097.585 | .1097.585 | .1349.290 | .1349.290 | .28018.97 | .28018.97 | .43228.57 | .43228.57 | .56236.39 | .71845.30 | .86453.16 | |
| 7 | 7.625 | .30123.57 | .50038.05 | .87563.08 | |||||||||
| Medium Type = Wall thickness in inches Bold Type = Steel weight per foot in pounds | |||||||||||||
Mostly TP304 stainless steel pipe pressure rating
Stainless Steel Pipes – Pressure Ratings
Pressure ratings for standard seamless A312-TP304 stainless steel pipes – temperatures 100°F to 750°F
Ratings for standard seamless stainless steel pipes, temperatures from 100°F to 750°F. All ratings in psig based on ANSI/ASME B 31.1.
Pressure Rating (psig)
| Pipe Size (inches) | Pipe Schedule | Temperature (°F) | ||||||||
| 100 | 200 | 300 | 400 | 500 | 600 | 650 | 700 | 750 | ||
| 1″ | 40 | 3048 | 2629 | 2362 | 2171 | 2019 | 1924 | 1867 | 1824 | 1810 |
| 1″ | 80 | 4213 | 3634 | 3265 | 3002 | 2791 | 2659 | 2580 | 2528 | 2501 |
| 1″ | 160 | 6140 | 5296 | 4759 | 4375 | 4068 | 3876 | 3761 | 3684 | 3646 |
| 1.5″ | 40 | 2257 | 1947 | 1750 | 1608 | 1496 | 1425 | 1383 | 1354 | 1340 |
| 1.5″ | 80 | 3182 | 2744 | 2466 | 2267 | 2108 | 2009 | 1949 | 1909 | 1889 |
| 1.5″ | 160 | 4619 | 3984 | 3580 | 3291 | 3060 | 2916 | 2829 | 2772 | 2743 |
| 2 นิ้ว | 40 | 1902 | 1640 | 1474 | 1355 | 1260 | 1201 | 1165 | 1141 | 1129 |
| 2 นิ้ว | 80 | 2747 | 2369 | 2129 | 1957 | 1820 | 1734 | 1682 | 1648 | 1631 |
| 2 นิ้ว | 160 | 4499 | 3880 | 3486 | 3205 | 2980 | 2840 | 2755 | 2699 | 2671 |
| 3 นิ้ว | 40 | 1806 | 1558 | 1400 | 1287 | 1196 | 1140 | 1106 | 1084 | 1072 |
| 3 นิ้ว | 80 | 2553 | 2202 | 1979 | 1819 | 1691 | 1612 | 1564 | 1532 | 1516 |
| 3 นิ้ว | 160 | 3840 | 3312 | 2976 | 2736 | 2544 | 2424 | 2352 | 2304 | 2280 |
| 4 นิ้ว | 40 | 1531 | 1321 | 1187 | 1091 | 1014 | 967 | 938 | 919 | 909 |
| 4 นิ้ว | 80 | 2213 | 1909 | 1715 | 1577 | 1466 | 1397 | 1355 | 1328 | 1314 |
| 4 นิ้ว | 160 | 3601 | 3106 | 2791 | 2566 | 2386 | 2273 | 2206 | 2161 | 2138 |
| 5 นิ้ว | 40 | 1342 | 1158 | 1040 | 956 | 889 | 847 | 822 | 805 | 797 |
| 5 นิ้ว | 80 | 1981 | 1709 | 1535 | 1411 | 1312 | 1250 | 1213 | 1189 | 1176 |
| 5 นิ้ว | 160 | 3414 | 2945 | 2646 | 2433 | 2262 | 2155 | 2091 | 2049 | 2027 |
| 6 นิ้ว | 40 | 1219 | 1052 | 945 | 869 | 808 | 770 | 747 | 732 | 724 |
| 6 นิ้ว | 80 | 1913 | 1650 | 1483 | 1363 | 1267 | 1208 | 1172 | 1148 | 1136 |
| 6 นิ้ว | 160 | 3289 | 2836 | 2549 | 2343 | 2179 | 2076 | 2014 | 1973 | 1953 |
| 8 นิ้ว | 40 | 1073 | 926 | 832 | 765 | 711 | 678 | 657 | 644 | 637 |
| 8 นิ้ว | 80 | 1692 | 1459 | 1311 | 1205 | 1121 | 1068 | 1036 | 1015 | 1005 |
| 8 นิ้ว | 160 | 3175 | 2738 | 2460 | 2262 | 2103 | 2004 | 1944 | 1905 | 1885 |
| 10 นิ้ว | 40 | 974 | 840 | 755 | 694 | 945 | 615 | 596 | 584 | 578 |
| 10 นิ้ว | 80 | 1609 | 1388 | 1247 | 1147 | 1066 | 1016 | 986 | 966 | 956 |
| 10 นิ้ว | 160 | 3147 | 2714 | 2439 | 2242 | 2085 | 1986 | 1927 | 1880 | 1868 |
304 stainless steel Pipe Outside Diameter Tolerance
| NPS | ASTM A312 OD Tolerance | |||
| + | – | |||
| inch | mm | inch | mm | |
| 1/8~1 1 /2 | 1/64(0.015) | 0.4 | 1/32(0.031) | 0.8 |
| > 1 1 /2~4 | 1/32(0.031) | 0.8 | 1/32(0.031) | 0.8 |
| > 4~8 | 1/16(0.062) | 1.6 | 1/32(0.031) | 0.8 |
| > 8~18 | 3/32(0.093) | 2.4 | 1/32(0.031) | 0.8 |
| > 18~26 | 1/8(0.125) | 3.2 | 1/32(0.031) | 0.8 |
| > 26~34 | 5/32(0.156) | 4 | 1/32(0.031) | 0.8 |
| > 34~48 | 3/16(0.187) | 4.8 | 1/32(0.031) | 0.8 |
Astm A312 Tp304 Pipe Processing
| ASTM A312 TP304 Stainless steel seamless pipe manufacture Processing | |
| Structural Cutting | Products cut include tube, tubing, Square tubes, Rectangular tubes, round tubes Thickness range is 1/8″NB TO 30″NB diameter |
| Tubular Cutting | Products cut include Ornamental Tube, Tubing and Hollow Section. Thickness range is 1/8″NB TO 30″NB diameter |
| Production Cutting | can provide production cutting for product diameters up to 4″. We utilize Amada Production Equipment to achieve these precision cuts with tight tolerances. |
| Structural Polishing | Products polished included all tubular products, with OD & ID polishing available |
การอบชุบด้วยความร้อน
Stainless steel pipes made of austenitic stainless steel ASTM A312 TP304 or TP304L shall be solution annealed. ASTM A312 TP304 Stainless steel seamless pipe During annealing, the pipes shall be heated to the temperature no less than 1900°F [1040°C] and soak at the temperature for a period long enough so that all chromium carbides are dissolved. Since the chromium carbide dissolves slowly, the highest practical temperature consistent with limited grain growth should be selected. This temperature is in the vicinity of 1095° [2000°F]. Complete dissolution of chromium carbides reduces precipitation of intergranular carbides hence improves the resistance to intergranular corrosion. Subsequent cooling (quenching) from the annealing temperature must be fast, thus ensuring that dissolved carbides remain in solution.
SA 312 Gr 304 Seamless Pipe Applications
Pharmaceuticals
Chemicals
Food Processing
Oil and Gas Processing
Energy industries
Pulp and Paper
Textile Machinery
Power Plants
Construction
Automotive Industry
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ท่อสแตนเลส 304L ท่อไร้รอยต่อสแตนเลส 304L ท่อสแตนเลส 310S 321 สแตนเลส ท่อสแตนเลส 904L ท่อสแตนเลส 904L ท่อสแตนเลส 2205 ท่อสแตนเลสไร้รอยต่อ 2205 ท่อสแตนเลสสตีลดูเพล็กซ์ 2507 ท่อสแตนเลส 2507 ท่อสแตนเลสไร้รอยต่อ 2507 ท่อสแตนเลส 2520 ท่อสแตนเลส AStm A312 ข้อกำหนดท่อสแตนเลส ASTM A312 ท่อสแตนเลสไร้ตะเข็บ ASTM A312 ท่อสแตนเลสไร้รอยต่อ ASTM A312 TP304 ท่อสแตนเลส ASTM A312 TP316L ท่อสแตนเลส Astm a554 เบอร์ลินแฮม ไวร์ เกจ บีดับเบิลยูจี ขนาด Bwg ท่อ bwg ท่อสแตนเลสสองชั้น เกจ bwg ท่อแลกเปลี่ยนความร้อน ข้อต่อแบบกดสแตนเลส ราคา ท่อไร้รอยต่อสุขาภิบาล ท่อสแตนเลสสตีลสำหรับสุขภัณฑ์ ท่อสแตนเลสสตีลสำหรับสุขภัณฑ์ ตารางขนาด ท่อสแตนเลส ข้อต่อท่อสแตนเลส ท่อสแตนเลส ท่อสแตนเลสสตีลสำหรับงานสุขาภิบาล ท่อสแตนเลสไร้รอยต่อ ท่อสแตนเลสไร้รอยต่อ ท่อสแตนเลส ท่อสแตนเลสเชื่อม มาตรฐานขนาดลวด ท่อสแตนเลสซูเปอร์ออสเทนนิติก 904L ท่อสแตนเลส Tp304 ท่อสแตนเลสไร้รอยต่อ TP304L ท่อจีน ตารางขนาดท่อ