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Cold Formed ASTM A500 Gr.B Rectangular Hollow Section

A500 Gr.B Carbon Pipe

Cold Formed A500 Gr.B Rectangular Hollow Section Manufacturer, SS ASTM A500 Grade B Hollow Section Supplier in Mumbai, India.


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Ranfit Metal is a well-known manufacturer, supplier, and stockiest of Cold Formed ASTM A500 Grade B Rectangular Hollow Section. It is cold-formed, meaning it is shaped at room temperature, offering specific benefits for structural and aesthetic applications.

Cold Formed ASTM A500 Gr. B Rectangular Hollow Section (RHS) is a structural steel section that is manufactured by cold-forming steel strips into rectangular shapes, followed by welding the edges. The Cold Formed ASTM A500 Gr. B Rectangular Hollow Section is a versatile and widely used structural steel product that offers exceptional strength, durability, and versatility. One of the key benefits of the Cold Formed ASTM A500 Gr. B MS Rectangular Hollow Section Tube is its rectangular shape, which provides greater strength and stability compared to traditional circular hollow sections. Cold Formed ASTM A500 Gr. B Rectangular Box Sections is excellent corrosion resistance, making it suitable for outdoor and harsh environmental applications.

ASTM A500 Grade B Pipes Tubes RHS refers to a structural steel product commonly used in construction, engineering, and fabrication. ASTM A500 Grade B Cold Formed MS Rectangular Tube specifies minimum yield and tensile strength requirements, typically yielding around 46 ksi (317 MPa) and having a minimum tensile strength of 58 ksi (400 MPa).


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Key Standards

ASTM A500: Standard specification for cold-formed welded and seamless carbon steel structural tubing.

Grade B: specifies minimum yield and tensile strength requirements, typically yielding around 46 ksi (317 MPa).


Cold Formed ASTM A500 Gr B Rectangular Hollow Section Specifications

Standard ASTM A500/ASME SA500
Grade Grade B
RHS (Rectangular Hollow Sections) Sizes 10mm x 15mm / 150mmx50mm / 300mmx400mm / 600mmx550mm
Outside Diameter 21.3—457.2mm
Wall Thickness 0.5mm - 25mm
Length 6000-14000 mm
Straightness Minimum 1 : 200th of any length measured along the centre line (mill straightened condition) unless otherwise specifically arranged.
Tolerance Thickness (All sizes +/- 10%)
Surface Protection Black (Self Coloured uncoated), Varnish/Oil Coating, Pre-Galvanized, Hot Dip Galvanized
Packing In bundles, Anticorrosion heat preservation, Varnish coating, Ends can be bevelled or rectangular cut, End Capped Certification & supplementary test, Finishing & Identity Mark

ASTM A500 Gr. B Cold Formed Rectangular Hollow Pipes and Tubing Material Equivalent

Steel Grade S, max Cu, min C, max P, max
ASTM A500 Grade A 0.035 0.20 0.26 0.035

ASME SA500 Gr. B CFRHS Pipes & Tubes Mechanical Strength

Steel Grade Yield strength, min, Tensile strength, min Elongation in 2 in. (50.8 mm) min, %
ASME SA500 Grade B 317 MPa, 46 000 psi 400 MPa, 58 000 psi 23

Types of ASME SA500 Grade B Hollow Section Rectangular

ASTM A500 Gr. B Rectangular Hollow Section

ASTM A500 Gr. B Rectangular Hollow Pipes

ASTM A500 Gr. B Rectangular Hollow Tubing

ASTM A500 Gr. B Structural Rectangular Hollow Sections

ASTM A500 Grade B Welded Rectangular Hollow Pipes

cold formed A500 Grade B Rectangular SHS Tube

Cold Formed ASTM A500 Gr. B 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

RHS Thickness Sec Area Unit Moment of Inertia Radius of Gyration Elastic Modulus Torsional Constants Outer
Surface Area
mm mm cm2 kg/m cm4 cm4 cm cm cm3 cm3 cm4 cm3 m2
50x25 2 2.74 2.15 8.38 2.81 1.75 1.01 3.35 2.25 6.97 3.79 0.142
2.6 3.46 2.71 10.16 3.36 1.71 0.99 4.06 2.69 8.27 4.53 0.137
3.2 4.13 3.24 11.63 3.8 1.68 0.96 4.35 3.04 9.52 5.12 0.134
4 4.95 3.88 13.13 4.23 1.63 0.92 5.25 3.38 10.86 5.69 0.129
60x40 2.26 4.76 3.73 22.76 12.09 2.19 1.59 7.59 6.05 25.59 9.83 0.187
2.9 5.25 4.12 24.74 13.11 2.17 1.58 8.25 6.56 28.02 10.66 0.185
3.6 6.35 4.98 28.9 15.23 2.13 1.55 9.63 7.62 33.3 12.41 0.181
4.5 7.67 6.02 33.31 17.44 2.08 1.51 11.1 8.72 39.34 14.29 0.177
60x33 2.6 4.7 3.69 25.15 8.43 2.31 1.34 7.62 5.11 20.75 8.71 0.185
2.9 5.19 4.07 27.33 9.12 2.29 1.33 8.28 5.53 22.65 9.43 0.183
3.6 6.28 4.93 31.87 10.52 2.25 1.29 9.66 6.37 26.71 10.9 0.179
4.5 7.58 5.95 36.64 11.93 2.20 1.25 11.1 7.23 31.21 12.43 0.175
80x40 2.6 5.8 4.55 46.58 15.74 2.84 1.65 11.65 7.87 38.5 13.46 0.227
2.9 6.41 5.03 50.87 17.11 2.82 1.63 12.72 8.56 42.23 14.66 0.225
3.2 7.01 5.5 54.94 18.41 2.8 1.62 13.74 9.21 45.83 15.78 0.224
4 8.55 6.71 64.79 21.49 2.75 1.59 16.2 10.74 54.77 18.49 0.219
4.8 10.01 7.85 73.22 24.03 2.71 1.55 18.3 12.02 62.81 20.79 0.215
96x48 3.2 8.54 6.71 98.61 33.28 3.4 1.97 20.54 13.87 82.13 23.82 0.272
4 10.47 8.22 117.54 39.32 3.35 1.94 24.49 16.38 99.11 28.24 0.267
4.8 12.31 9.66 134.35 44.55 3.3 1.9 27.99 18.56 114.8 32.14 0.263
122x61 3.6 12.32 9.67 232.61 78.83 4.34 2.53 38.13 25.85 193.91 44.5 0.347
4.5 15.14 11.88 278.94 93.78 4.29 2.49 45.73 30.75 235.39 53.13 0.343
5.4 17.85 14.01 320.83 107.03 4.24 2.45 52.6 35.09 347.29 60.89 0.338
120x60 3.2 10.85 8.51 199.88 67.95 4.29 2.5 33.31 22.65 165.83 28.95 0.344
3.6 12.11 9.5 220.75 74.77 4.27 2.48 36.79 24.92 184.1 42.91 0.341
4.5 14.87 11.67 264.52 88.88 4.22 2.44 44.09 29.63 223.34 51.19 0.337
145x82 4.8 20.28 15.92 555.16 228.50 5.23 3.36 76.57 55.73 534.27 94.45 0.429
5.4 22.6 17.74 610.85 250.59 5.2 3.33 84.26 61.12 592.7 103.81 0.426

Cold Formed ASTM A500 Gr. B RHS Pipes Dimension

Size (inches) Wall Thickness (inches) Outside Diameter (inches)
Inside Diameter (inches)
1/2 x 1/2 0.065 0.84 0.61
3/4 x 3/4 0.065 1.05 0.82
1 x 1 0.065 1.315 1.049
1 x 1 0.083 1.315 1.035
1 x 1 0.109 1.315 0.957
1-1/4 x 1-1/4 0.065 1.66 1.38
1-1/4 x 1-1/4 0.083 1.66 1.334
1-1/4 x 1-1/4 0.109 1.66 1.278
1-1/2 x 1-1/2 0.065 1.9 1.61
1-1/2 x 1-1/2 0.083 1.9 1.584
1-1/2 x 1-1/2 0.109 1.9 1.5
2 x 2 0.065 2.375 2.245
2 x 2 0.083 2.375 2.307
2 x 2 0.109 2.375 2.245
2-1/2 x 2-1/2 0.083 2.875 2.709
2-1/2 x 2-1/2 0.109 2.875 2.625
3 x 3 0.083 3.5 3.334
3 x 3 0.109 3.5 3.26
3-1/2 x 3-1/2 0.109 4 3.834
4 x 4 0.083 4.5 4.334
4 x 4 0.109 4.5 4.26
4 x 4 0.188 4.5 4.124
5 x 5 0.188 5 4.624
6 x 6 0.188 6 5.624

Cold Formed ASTM A500 Gr. B RHS Dimensional Tolerances

Dimensions less than 100mm +/- 1.0% with a minimum of +/- 0.5mm
Dimensions 100mm up to 200mm +/- 0.8%
Dimensions over 200mm +/- 0.6%
Wall thickness (excluding weld area) +/-10% for specified thickness of 5mm or below and +/-0.5mm for thickness greater than 5mm
Concavity/Convexity Max. 0.8% with a minimum of 0.5mm
Squareness of sides 90 Degree +/- 1 Degree
Externalcorner radius 6mm thick or below: 1.6 to 2.4 x wall thickness
Straightness 0.15% of total length
Twist 2mm + ( 0.5mm per mtr ) max

Cold Formed ASTM A500 Gr. B SHS

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ASTM A500 Grade B SHS Available Types

ASTM A500 Gr. B Cold Formed CS Rectangular Hollow Section Supplier A500 Grade B Welded Rectangular Tubing
ASTM A500 Gr. B Cold Formed Rectangular Box Sections ASTM A500 Gr. B Seamless Rectangular Hollow Section Stockist
Cold Formed ASTM A500 Gr. B Hollow Rectangular Tube, Welded Cold Formed ASTM A500 Gr. B RHS Pipes
ASTM A500 Gr. B Cold Formed RHS Tube Stockist A500 Gr. B Rectangular Structural Steel Piping
High Temperature A500 Grade B Pipes ASME SA500 Gr B MS Rectangular Hollow Section Pipe
ASTM A500 Gr. B Cold Rolled Rectangular Hollow Sections Supplier A500 Grade B Cold Formed ERW RHS Manufacturer
ASTM A500 Gr. B Cold Formed Rectangular Seamless Pipe ASTM A500 Gr. B Rectangular Cold Formed ERW Pipes
A500 Grade B Carbon Steel Welded RHS MAnufacturer A500 Grade B Cold Formed MS RHS Tube
ASTM A500 Gr. B Seamless Cold Formed RHS Tubes ASME SA500 Gr B Rectangular Hollow Structural Sections
A500 Grade B Schedule 40 Seamless Pipes Cold formed ASTM A500 Gr. B structural CFSHS

Cold Formed ASTM A500 Grade B SHS Manufacturing Process



ASTM A500 Gr. B Cold Formed Rectangular Hollow Sections – Application Industrty

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

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