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Rectangular Hollow Section Steel Tube factory and supplier-CONTINENTAL STEEL CO.,LTD
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Steel Hollow Section
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Rectangular steel Pipe

Rectangular Hollow Section Steel Tube 

OD: 20mm*10mm ~ 400mm*300mm

Length : 6000-14000 mm

Type : Seamless/ Welded / ERW

Pipe Standard:ASTM A53, ASTM A500,BS EN 10219,JIS G 3466, ASTM A513, ASTM A36;S235JR,S355JR,Q235,St37,St37-2,St52,SS400, STK500,

Packing : In bundles, Anticorrosion heat preservation, Varnish coating, 
Ends can be bevelled or rectangular cut, End Capped Certification & supplementary test, Finishing & Identity Mark

Surface Protection: Black (Self Coloured uncoated), Varnish/Oil Coating, Pre-Galvanized, Hot Dip Galvanized

Application:Widely used in furniture,interior decoration, structure

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Description Specification Production process Inquiry

Description

Carbon steel rectangular hollow sections are often abbreviated to “RHS” which is also called structural steel rectangular tube, rectangular steel box section and mild steel hollow rectangular bar. It is manufactured from hot rolled carbon steel strip through a series of successive forming with roller change the rectangular shape and then welded from inside using high frequency welding.

Usually, mild steel rectangular tubes are used maintenance and structural purposes, such as machinery manufacturing, construction industry, metallurgical industry, agricultural, vehicles, agricultural greenhouses, automobile industry, railway, highway guardrail, container frame, furniture decoration and structural steel.

Our factory can offer different manufacturing standards of rectangular hollow section, like GB/T6725, GB/T6728, ASTM A500, EN10219, EN10210, JISG3466, EN10219, ASTMA36, AS/NZS/1163 or customized available Steel Grade: SPA-H, SPHC, ASTM A500 grade A, ASTM A500 grade B, ASTM A500 grade C, Q235B, Q345B, Q345E, Q420, Q450, Q460, QSTE500TM, BC550, BS600MC, BS700MC, A36, SS400, S355J0H, S355J2H, S235JR etc.

In addition, our factory can also provide our clients with hot dipped galvanizing process with various kinds of sizes from 30x20mm (height range X width range) to 600mm x 800mm (height range X width range), wall thickness range from 1mm to 30 mm.

Kindly see the following size table for further information and if you do not find the size your needed, please contact us to customize your size and get the latest price.

 

Rectangular Hollow Section Steel Tube Size:
OD: 20mm*10mm ~ 600mm*400mm
Pipe Standard:ASTM A53, ASTM A500,BS EN 10219,JIS G 3466, ASTM A513, ASTM A36;S235JR,S355JR,Q235,St37,St37-2,St52,SS400, STK500,
Furface:Black bared ,can be galvanized,oiled,painted,powdered.
Packing:Waterproof  plastic bag,bundle with strip
Application:Widely used in furniture,interior decoration, structure
Surface:Black bared ,can be galvanized,oiled,painted,powdered.
Packing:Waterproof  plastic bag,bundle with strip

Cold Formed Rectangular Hollow Section Specification
Standard : BS EN 10219 - Cold Formed Welded Structural Hollow Sections of Non-alloy and Fine Grain Steels
RHS Sizes: 40mm*20mm - 240*120mm
Wall Thickness : 1.6mm-16.0mm
Length : 6000-14000 mm
Type : Seamless/ Welded / ERW
Dimensional Tolerances : Thickness : (All sizes +/- 10%)
Packing : In bundles, Anticorrosion heat preservation, Varnish coating, Ends can be bevelled or rectangular cut, End Capped Certification & supplementary test, Finishing & Identity Mark
Available Grades : S235JRH, S275J0H, S275J2H, S355J0H, S355J2H, S355J2+N, IS 4923 / ASTM A500 / As Per Requirement
Surface Protection: Black (Self Coloured uncoated), Varnish/Oil Coating, Pre-Galvanized, Hot Dip Galvanized

Hot Finish Rectangular Hollow Section Specification
Standard : BS EN 10210 - Hot Finished Structural Hollow Sections of Non-alloy and Fine Grain Steels
Sizes : 300x200 mm
Wall Thickness : 0.5mm - 25mm
Length : 6000-14000 mm
Type : Seamless/ Welded / ERW
Dimensional Tolerances : Thickness : (All sizes +/- 10%)
Packing : In bundles, Anticorrosion heat preservation, Varnish coating, Ends can be bevelled or rectangular cut, End Capped Certification & supplementary test, Finishing & Identity Mark
Available Grades : S235JRH, S275J0H, S275J2H, S355J0H, S355J2H, S355J2+N, IS 4923 / ASTM A500 / As Per Requirement
Surface Protection: Black (Self Coloured uncoated), Varnish/Oil Coating, Pre-Galvanized, Hot Dip Galvanized

SS Rectangular Hollow Section Specification
Specifications : ASTM A554 / ASME SA554
Sizes : 10mm x 20mm to 150 x 300mm, other non standard sizes available on request
Wall Thickness : 0.5mm - 25mm
Length : Up to 6 meters, custom cut lengths
Type : Seamless/ Welded / ERW
Packing : In bundles, Anticorrosion heat preservation, Varnish coating, Ends can be bevelled or rectangular cut, End Capped Certification & supplementary test, Finishing & Identity Mark
Available Steel Grades : 304, 304L, 304H, 316, 316L, 316H, 316Ti, 321, 321H, 310S, 202, 409, 409L / As Per Requirement
Finish : 2B, No.1 Pickled Finish, No.4 finish, BA Finish, No.8 Mirror Finish, Electr

Specification

Size

Thickness(mm)

(MM)

1

1.5

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

30X20

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40X20

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40X25

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50X30

  

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60X30

  

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50X40

  

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80X40

  

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70X50

  

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80X50

  

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90X60

  

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100X50

  

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150X50

  

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160X60

      

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150X100

      

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200X100

      

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250X100

      

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300X150

        

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300X200

        

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350X200

        

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350X250

        

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400X300

          

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550X400

          

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550X450

          

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550X500

          

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600X400

            

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Dimensional Tolerances

Dimensional Tolerances

Outside Diameter:

Twist:

Maximum twist per 3 feet of length

Largest outside dimension

Outside tolerance including convexity and concavity

Longest outside dimension

up to 2 1/2"

±.020"

2" to 2 1/2"inclusive

.062"

over 21/2" to 31/2" inclusive

±.025"

over 21/2" to 4" inclusive

.075"

over 31/2" to 51/2" inclusive

±.030"

over 4" to 6" inclusive

.087"

over 51/2"

±1%

over 6" to 8" inclusive

100"

Tolerances include allowance for convexity or concavity. For
rectangular sections, the tolerance calculated for the larger flat
dimension shall also apply to the smaller flat dimension. This
tolerance may be increased 50 percent when applied to the
smaller dimension, if the ratio of cross sectional dimension
is between 1.5 and 3, and 100 percent when the ratio exceeds 3.

over 8"

112"

Straightness:
Permissable variation shall be 1/8" times the number of feet of total length divided by 5:

.125" x (total length) ÷ 5

Wall Thickness:

Squareness of Sides:

Maximum allowable variation

±10%

Adjacent sides may deviate from 90° by a tolerance of plus or minus 2 degrees maximum.

(wall thickness is to be measured at the center of the flat, exclusive
of the weld area, and not at the corners)

Worner Radii:

Flash:

The radius of any outside corner shal not exceed three times
the specified wall thickness

Structural tubing usually is supplied flash-in. The height of the
flash will vary with the wall thickness of the tube.

ASTM A500 Grade B,

ASTM A513 (1020-1026)

ASTM A36 (A36)

EN 10210:S235,S355,S235JRH,

S355J2H,S355NH

EN 10219:S235,S355,S235JRH,

S275J0H, S275J2H, S355J0H, S355J2H

ASTM A500 Cold Formed Welded and Seamless Carbon Steel Steel Structural Tubing in Round and Shapes


Grade Designation

Chemistry-Ladle Analysis

Carbon

Manganese

Phosporous

Sulfur

A501 (A36)

0.26% max

-

0.04% max

0.05% max

A500A

0.26% max

-

0.04% max

0.05% max

A500B

0.26% max

-

0.04% max

0.05% max

A500C

0.23% max

1.35% max

0.04% max

0.05% max

Copper, when copper steel is specified, 0.20% minimum.

Mechanical Properties

Grade Designation

Grade

Tensile Strength

Yield Strength Minimum

Elongation In 2 Inches Minimum

Condition

Minimum

A501 (A36)

Hot Formed

58,000 psi

36,000 psi

23%

A500A

Cold Formed

45,000 psi

39,000 psi

25%

A500B

Cold Formed

58,000 psi

46,000 psi

23%

A500C

Cold Formed

62,000 psi

50,000 psi

21%

Chemical composition

Steel Grade: Q195, Q215, Q235, Q345, S235JR, S275JR, SS4007

Data

Elements（%）

Materal Grade

C

Mn

S

P

Si

Q195

0.06-0.12

0.25-0.50

<0.05

<0.045

<0.30

Q215

0.09-0.15

0.25-0.55

<0.05

<0.045

<0.30

Q235

0.12-0.20

0.30-0.70

<0.045

<0.045

<0.30

Q345

<0.20

1.0-1.6

<0.04

<0.04

<0.55

Mechanical property

Materal Grade

Yield point (Mpa)

Tensile Strength (Mpa)

Elongation(%)

Q195

>195

315-430

32-33

Q215

>215

335-450

26-31

Q235

>235

375-500

24-26

Q345

>345

470-630

21-22

Tolerance:

Length

+/- 50 MM

Wall Thickness

+/- 12.5%

Weight

+/- 8%

Production process

If you have any inquiries and questions, please contact CONTINENTAL STEEL CO.,LTD. at any time. Thanks in advance. Welcome!

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Continental Steel Co.,Ltd(CSC) is a pioneering manufacturer, stockist, and supplier of steel pipe products.

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