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Stainless Steel Gr. 312/321H A554 Rectangular Hollow Section

A554 Rectangular Hollow Section

ASTM A554 Stainless Steel Gr. 312/321H Rectangular Hollow Section Manufacturer & Supplier in Mumbai, India.


321/321H Stainless Steel Welded Rectangular Pipe, ASTM A554 321 SS Rectangular Hollow Section Welded Tube Exporter, SS ASTM A554 321/321H ERW RHS Tubing, ASTM A554 Stainless Steel Grade 321H Seamless Rectangular Pipes, SA554 321/321H SS Welded Rectangular Tubing, Stainless Steel 321H ASTM A554 RHS Tube, ASME SA554 321/321H Austenitic Stainless Steel Rectangular Hollow Section, A554 SS 321 Seamless RHS Pipes, A554 SS 321/321H Seamless Rectangular Tube Stockist in Mumbai, India.


Ranfit Metal is a well-known manufacturer, supplier, and stockiest of ASTM A554 Stainless Steel Gr. 321 Rectangular Hollow Section, are a type of structural steel tube with a rectangular cross-section. Stainless steel grade 321/321H is often used for these sections due to its excellent corrosion resistance, strength, and aesthetic appeal.

ASTM A554 Stainless Steel 321/321H Rectangular Hollow Section has moderate corrosion resistance, making it suitable for use in various environments, though it may not be as corrosion-resistant as grades like 321 or 321H. ASTM A554 321 SS Rectangular Hollow Section Welded Tubing is relatively easy to form and weld, making it ideal for custom fabrication it also has a good balance of strength and formability, making it useful for structural applications. ASME SA554 Stainless Steel 321 Seamless RHS are available in various sizes, typically in widths ranging from 20 mm to 200 mm and thicknesses from 1.5 mm to 12 mm, though custom sizes can be ordered. SS UNS S30400 Structural Rectangular Hollow Section can be easily fabricated using various techniques, including cutting, drilling, grinding, and welding. The material's high ductility enables it to be formed into complex shapes and curves, while its smooth surface finish ensures easy installation and assembly.

ASTM A554 SS 321H RHS Pipes & Tubes commonly used for building frames, structural supports, and facades, thanks to their aesthetic appeal and strength, in construction of frames for vehicles and transport equipment, it is a popular choice for creating railings and handrails,


Stainless Steel A554 Gr 321H RHS Tubes, SS SUS 321/321H Rectangular Box Sections Exporters , ASTM A554 Gr.321/321H Stainless Steel Seamless Rectangular Hollow Sections, DIN 1.4373 SS Rectangular Hollow Section Pipes, 321/321H Stainless Steel Welded Rectangular Tubes Dealers in India, AISI 321H Stainless Steel Rectangular Hollow Section Tube, A554 SS 321 Structural Rectangular Hollow Sections, ASME SA554 Steel 321 ERW RHS Pipes, Exporters in Mumbai, India.


Key Standards

ASTM A554: Covers welded stainless steel mechanical tubing, including hollow sections, used for decorative or structural purposes.

Gr. 321/321H: is an austenitic stainless steel, known for its versatility, corrosion resistance, and durability.

Stainless Steel Gr. 321/321H Rectangular Hollow Section Specifications

Standard ASTM A554/ ASME SA554 (Ornamental Tubing Specification) or ASTM A312
Grade Stainless Steel 321/321H
ASME/ANSI Specification ANSI/ASME B36.10M, ANSI/ASME B36.19M
RHS (Rectangular Hollow Sections) Sizes 10mm x 20mm to 150 x 300mm, other non standard sizes available on request
Manufacturing Type ERW, Welded, CDW, Seamless, 100% X Ray Welded, Fabricated
Outside Diameter 21.3—457.2mm
Wall Thickness 0.5mm to 6mm
Scheduled SCH 40, SCH 5, SCH10, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
Length Up to 6 meters, Custom Cut Lengths
Finish 2B, No.1 Pickled Finish, No.4 finish, BA Finish, No.8 Mirror Finish, Electropolished Rectangular Pipes
Packing In bundles, coating, Ends can be bevelled or rectangular cut, End Capped Certification & supplementary test, Finishing & Identity Mark

ASME SA554 321/321H Stainless Steel Rectangular Hollow Section Equivalent Grades

STANDARD WERKSTOFF NR. UNS JIS BS GOST AFNOR EN
SS 321/321H 1.4301 S30400 SUS 321/321H 304S31 08Х18Н10 Z7CN18‐09 X5CrNi18-10

ASTM A554 Stainless Steel 321/321H Rectangular Hollow Section Chemical Composition

Grade C Mn Si P S Cr Mo Ni N
SS 304 0.08 max 2 max 0.75 max 0.045 max 0.030 max 18 – 20 - 8 – 11 -

ASME SA554 SS 316 Structural Rectangular Hollow Section Mechanical Properties

Element Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
SS 316 8.0 g/cm3 1400 °C (2550 °F) Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 35 %

ASME SA554 SS 316 Structural Rectangular Hollow Section Physical Properties

Grade Density (kg/m3) Elastic Modulus (GPa) Mean Coefficient of thermal Expansion (m/m/0C) Thermal Conductivity (W/m.K) Specific Heat 0-1000C (J/kg.K) Electrical Resistivity (n.m)
0-1000C 0-3150C 0-5380C at 1000C at 5000C
304 8000 193 17.2 17.8 18.4 16.2 21.5 500 720

Types of EN 10219 S235JRH Hollow Section Square

ASTM A554 Stainless Steel 316 Welded Rectangular Hollow Section

ASTM A554 Stainless Steel 316 Seamless Rectangular Hollow Pipes

ASTM A554 Stainless Steel 321/321H Structural Rectangular Hollow Tubing

ASTM A554 SS 321/321H Electropolished Rectangular Hollow Sections

ASTM A554 SS 321/321H Rectangular Hollow Box

ASTM A554 SS 321/321H ERW Rectangular Hollow Pipes & Tubes

ASTM A554 Stainless Steel 321/321H Rectangular Hollow Section Size Chart

Size mm kg/m Size mm kg/m
40 x 20 x 2.0 1.68 40 x 20 x 2.5 2.03
40 x 20 x 3.0 2.36 40 x 25 x 1.5 1.44
40 x 25 x 2.0 1.89 40 x 25 x 2.5 2.23
50 x 25 x 2.0 2.21 50 x 25 x 2.5 2.72
50 x 25 x 3.0 3.22 50 x 30 x 2.5 2.92
50 x 30 x 3.0 3.45 50 x 30 x 4.0 4.46
50 x 40 x 3.0 3.77 60 x 40 x 2.0 2.93
60 x 40 x 2.5 3.71 60 x 40 x 3.0 4.39
60 x 40 x 4.0 5.72 70 x 50 x 2 3.56
70 x 50 x 2.5 4.39 70 x 50 x 3.0 5.19
70 x 50 x 4.0 6.71 80 x 40 x 2.5 4.26
80 x 40 x 3.0 5.34 80 x 40 x 4.0 6.97
80 x 40 x 5.0 8.54 80 x 50 x 3.0 5.66
80 x 50 x 4.0 7.34 90 x 50 x 3.0 6.28
90 x 50 x 3.6 7.46 90 x 50 x 5.0 10.11
100 x 50 x 2.5 5.63 100 x 50 x 3.0 6.75
100 x 50 x 4.0 8.86 100 x 50 x 5.0 10.90
100 x 60 x 3.0 7.22 100 x 60 x 3.6 8.59
100 x 60 x 5.0 11.70 120 x 80 x 2.5 7.65
120 x 80 x 3.0 9.03 120 x 80 x 4.0 12.00
120 x 80 x 5.0 14.80 120 x 80 x 6.0 17.60
120 x 80 x 8.0 22.9 150 x 100 x 5.0 18.70
150 x 100 x 6.0 22.30 150 x 100 x 8.0 29.10
150 x 100 x 10.0 35.70 160 x 80 x 5.0 18.00
160 x 80 x 6.0 21.30 160 x 80 x 8.0 27.90
200 x 100 x 5.0 22.70 200 x 100 x 6.0 27.00
200 x 100 x 8.0 35.4 200 x 100 x 10.0 43.60
250 x 150 x 5.0 30.5 250 x 150 x 6.0 38.2
250 x 150 x 8.0 48.0 250 x 150 x 10 59.3
300 x 200 x 6.0 48.10 300 x 200 x 8.0 60.50
300 x 200 x 10.0 75.00 400 x 200 x 8.0 73.10
400 x 200 x 10.0 90.70 400 x 200 x 16 142.00

ASTM A554 Stainless Steel 321h RHS Weight Chart

Size (mm) Thickness (mm) Kg/Metre
50 x 25 2 2.23
50 x 25 2.5 2.69
50 x 25 3 3.25
50 x 30 2.5 2.92
50 x 30 3 3.45
50 x 30 3.2 3.66
50 x 30 4 4.46
50 x 30 5 5.4
60 x 40 2.5 3.71
60 x 40 3 4.39
60 x 40 3.2 4.66
60 x 40 4 5.72
60 x 40 5 6.97
60 x 40 6.3 8.49
80 x 40 3 5.34
80 x 40 3.2 5.67
80 x 40 4 6.97
80 x 40 5 8.54
80 x 40 6.3 10.5
80 x 40 8 12.8
80 x 50 3 5.58
80 x 50 5 9.01
90 x 50 3 6.28
90 x 50 3.6 7.46
90 x 50 5 10.1
90 x 50 6.3 12.5
90 x 50 8 15.3
100 x 50 3 6.75
100 x 50 3.2 7.18
100 x 50 4 8.86
100 x 50 5 10.9
100 x 50 6.3 13.4
100 x 50 8 16.6
100 x 60 3 7.22
100 x 60 3.6 8.59
100 x 60 5 11.7
100 x 60 6.3 14.4
100 x 60 8 17.8
120 x 60 3.6 9.72
120 x 60 5 13.3
120 x 60 6.3 16.4
120 x 80 8 20.4
120 x 80 5 14.8
120 x 80 6.3 18.4
120 x 80 8 22.9
120 x 80 10 27.9
150 x 100 5 18.7
150 x 100 6.3 23.3
150 x 100 8 29.1
150 x 100 10 35.7
150 x 100 12.5 43.6
160 x 80 5 18
160 x 80 6.3 22.3
160 x 80 8 27.9
160 x 80 10 34.2
160 x 80 12.5 41.6
200 x 100 5 22.7
200 x 100 6.3 28.3
200 x 100 8 35.4
200 x 100 10 43.6
200 x 100 12.5 53.4
200 x 100 16 66.4
200 x 120 5 24.2
200 x 120 6.3 30.3
200 x 120 8 37.9
200 x 120 10 46.7
200 x 120 12.5 57.3
200 x 150 5 26.6
200 x 150 6.3 33.2
200 x 150 8 41.7
200 x 150 10 51.4
200 x 150 12.5 63.2
200 x 150 16 78.9
250 x 100 6.3 33.2
250 x 100 8 41.7
250 x 100 10 51.4
250 x 100 12.5 63.2
250 x 100 16 78.9
250 x 150 5 30.5
250 x 150 6.3 38.2
250 x 150 8 48
250 x 150 10 59.3
250 x 150 12.5 73
250 x 150 16 91.5
300 x 100 6.3 38.2
300 x 100 8 48
300 x 100 10 59.3
300 x 100 12.5 73
300 x 100 16 91.5
300 x 200 6.3 48.1
300 x 200 8 60.5
300 x 200 10 75
300 x 200 12.5 92.6
300 x 200 16 117
300 x 250 6.3 53
300 x 250 8 66.8
300 x 250 10 82.8
300 x 250 12.5 102
300 x 250 16 129
350 x 150 6.3 48.1
350 x 150 8 60.5
350 x 150 10 75
350 x 150 12.5 92.6
350 x 150 16 117
350 x 250 8 73.1
350 x 250 10 90.7
350 x 250 12.5 112
350 x 250 16 142
400 x 150 6.3 53
400 x 150 8 66.8
400 x 150 10 82.8
400 x 150 12.5 102
400 x 150 16 129
400 x 200 6.3 57.9
400 x 200 8 73.1
400 x 200 10 90.7
400 x 200 12.5 112
400 x 200 16 142
400 x 300 10 106
400 x 300 12.5 132
400 x 300 16 167
450 x 250 8 85.7
450 x 250 10 106
450 x 250 12.5 132
450 x 250 16 167

Grade 321H Stainles Steel Rectangular Section Pressure Chart

Pressure Rating (psig)
Pipe Size
(inches)		 Pipe Schedule Temperature (oF)
100 200 300 400 500 600 650 700 750
1" 40 2028 2629 2362 2171 2019 1924 1867 1824 1810
80 4213 3634 3265 3002 2791 2659 2580 2528 2501
160 6140 5296 4759 4375 4068 3876 3761 3684 3646
1 1/2" 40 2257 1947 1750 1608 1496 1425 1383 1354 1340
80 3182 2744 2466 2267 2108 2009 1949 1909 1889
160 4619 3984 3580 3291 3060 2916 2829 2772 2743
2" 40 1902 1640 1474 1355 1260 1201 1165 1141 1129
80 2747 2369 2129 1957 1820 1734 1682 1648 1631
160 4499 3880 3486 3205 2980 2840 2755 2699 2671
3" 40 1806 1558 1400 1287 1196 1140 1106 1084 1072
80 2553 2202 1979 1819 1691 1612 1564 1532 1516
160 3840 3312 2976 2736 2544 2424 2352 2202 2280
4" 40 1531 1321 1187 1091 1014 967 938 919 909
80 2213 1909 1715 1577 1466 1397 1355 1328 1314
160 3601 3106 2791 2566 2386 2273 2206 2161 2138
5" 40 1342 1158 1040 956 889 847 822 805 797
80 1981 1709 1535 1411 1312 1250 1213 1189 1176
160 3414 2945 2646 2433 2262 2155 2091 2049 2027
6" 40 1219 1052 945 869 808 770 747 732 724
80 1913 1650 1483 1363 1267 1208 1172 1148 1136
160 3289 2836 2549 2343 2179 2076 2014 1973 1953
8" 40 1073 926 832 765 711 678 657 644 637
80 1692 1459 1311 1205 1121 1068 1036 1015 1005
160 3175 2738 2460 2262 2103 2004 1944 1905 1885
10" 40 974 840 755 694 645 615 596 584 578
80 1609 1388 1247 1147 1066 1016 986 966 956
160 3147 2714 2439 2242 2085 1986 1927 1880 1868

Cold Formed EN 10219 S275J0H SHS

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ASTM A554 SS 321/321H Rectangular Hollow Section Available Types

Schedule 80 Stainless Steel 321 Rectangular Hollow Tubing Thick Wall SS 321H Rectangular Hollow Section Stockists in India
UNS S321/321H00 Rectangular Hollow Section Pipe ASTM A554 Tp321/321H Stainless Steel Welded Tubes
321/321H Stainless Steel A554 Rectangular Hollow Section Stainless Steel A554 321 Rectangular Hollow Structural Sections Supplier
ASME SA554 Grade 321H Seamless Rectangular Tube Ferritic Stainless Steel 321/321H Rectangular Hollow Pipes
2 Inch ASME SA554 Stainless Steel 321/321H Rectangular Tubing Stainless Steel WERKSTOFF NR 1.4373 RHS Pipes Stokist in India
Stainless Steel 321/321H Welded RHS Pipes SS 321/321H Seamless Rectangular Hollow Section Pipes Stockholder
UNS S321/321H00 Welded RHS Pipes Exporter 1.4373 Seamless Rectangular Hollow Section Pipes Manufacturer
SS 321H Seamless Rectangular Hollow Structural Sections High Quality SS 321H Rectangular Hollow Section Pipe
Stainless Steel 321/321H Large Diameter Rectangular Hollow Section ASME SA554 SS 321/321H Rectangular Hollow Section Pipes Manufacturer in India
ASTM A554 321/321H SS Rectangular Hollow Pipe ASTM A554 Stainless Steel 321 Rectangular Hollow Pipe Gauges
SS INOX 1.4373 Heavy Wall Rectangular Hollow Piping SUS 321/321H Hollow Section Rectangular Pipes
SS 321/321H Seamless Rectangular Hollow Section Supplier in India High Quality ASTM A554 SS 321H Welded Rectangular Hollow Section
SS 321/321H Rectangular Hollow Box Section Exporter in India 321/321H SS Schedule 40/40S Rectangular Hollow Pipe Supplier in India
SS 321/321H Cold Drawn RHS Pipe exporter in India 321/321H SS Welded RHS Pipe Supplier in India
Stainless Steel 321 Rectangular Hollow Section Pipes Thick Walled SS 321H RHS Pipe Stockists in India
A554 SS 321/321H 1/2 Stainless Steel Rectangular Tubing ASTM A554 SS 321/321H RHS Pipe Exporter
Matt Finish A554 SS Gr. 321/321H Rectangular Hollow Tubing Allied Polished A554 SS 321 Rectangular Hollow Section
Jindal Rectangular SS Hollow Sections 321/321H Hot Rolled Stainless Steel Gr 321/321H Rectangular Hollow Section
6" NB in Thickness A554 SS 321/321H RHS Pipes Stockist 4" NB in Thickness A554 SS 321H Structural RHS Stockist
SS 321/321H Rectangular Hollow Section Welded Pipe Price List ASTM A554 SS 321/321H Polished Rectangular Hollow Section Pipe
Stainless Steel 321/321H RHS Pipe Manufacturer SS 321/321H (RHS) Rectangular Hollow Section Pipes
321/321H Stainless Steel Welded RHS Pipe Stainless Steel 321/321H RHS Pipe Gauges
SS 1.4373 Heavy wall RHS Piping SUS 321/321H RHS (Rectangular Hollow Section) Pipes
SS 321 Bright Annealed RHS Pipes Vendors SS 321/321H Beveled End RHS Pipes Stockist

Cold Formed S235JRH SHS Manufacturing Process



ASTM A554 Stainless Steel 316 Rectangular Hollow Sections – Application Industrty

  • Petrochemical Industry
  • Aerospace Industry
  • Refineries
  • Construcion
  • Chemical Industry
  • Railway Industry
  • Oil & Gas Industry
  • Ship Building

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Suppliers and Exporters of EN 10219 S235JRH Square Hollow Sections in cities like

Rajkot, Bengaluru, Ankara, Coimbatore, Petaling Jaya, Tehran, London, Ahvaz, Ranchi, Sydney, Faridabad, Seoul, Courbevoie, Madrid, Nagpur, Nashik, Montreal, Colombo, Al Khobar, Geoje-si, Jamshedpur, Atyrau, Gimhae-si, Pune, Abu Dhabi, Moscow, Riyadh, Thiruvananthapuram, Sharjah, Haryana, Hanoi, Bhopal, Rio de Janeiro, Hyderabad, Thane, Calgary, Granada, Caracas, Baroda, Busan, Jaipur, Gurgaon, Howrah, Hong Kong, Chandigarh, Kuala Lumpur, Manama, New York, Ulsan, Surat, Aberdeen, Jakarta, Kuwait City, New Delhi, Ho Chi Minh City, Ludhiana, Toronto, Mumbai, Los Angeles, Muscat, Doha, Singapore, Ahmedabad, Kolkata, Cairo, Jeddah, Bangkok, Indore, Houston, Istanbul, Perth, Brisbane, Algiers, Karachi, Secunderabad, Vadodara, Melbourne, Edmonton, Lagos, Pimpri-Chinchwad, Santiago, Dallas, Lahore, Vung Tau, Visakhapatnam, Dubai, Bogota, Port-of-Spain, Al Jubail, Chiyoda, Chennai, Dammam, Milan, Navi Mumbai, Noida, La Victoria, Ernakulam, Kanpur, Mexico City.