ASTM A53 Hot Rolled Galvanized Square Welded Carbon Hollow Section Tube

• Customization: Available
• Warranty: 1 Year
• Type: Welded
• Model NO.: MDS-RSP003
• Technique: Hot Rolled
• Material: Carbon Steel
• Surface Treatment: Galvanized
• Usage: Industrial Construction, Machinery/Rack/Container
• Section Shape: Square
• Transport Package: 1) in Bundle with Steel Strip 2) in Bulk
• Specification: OD: 10mm*10mm - 500mm*500mm
• Trademark: MIDAS
• Origin: China
• HS Code: 7304199000
• Production Capacity: 50000 Ton/Month

Product Description

ASTM A53 Hot Rolled Galvanized Square Welded Carbon Hollow Section Tube

RHS and SHS tube are a welded structural grade tubing,depending on its size and wall thickness. Either grade is ideal for all structural applications, general fabrication, manufacturing and repairs.

 

Square hollow section is widely used in industrial maintenance, agricultural implements, transportation equipment, truck beds, trailers, frames, etc. Its box-shape configuration allows for much greater strength and rigidity compared to angles or channels.

Specification

                 Square Hollow Section:

                        Outer diameter: 10mm*10mm - 500mm*500mm 

                         Wall thickness: 0.5mm - 20mm 

                         LENGTH: 0.1meters - 18meters 

               Rectangular Hollow Section:

                        Outer diameter: 10mm*20mm - 400mm*600mm 

                         Wall thickness: 0.5mm - 20mm 

                         LENGTH: 0.1meters- 18meters

Standard: ASTM A500, ASTM A53, EN 10210, EN 10219, JIS G 3466, BS 1387, BS 6323. GB: Q195, Q215, Q235, Q345. ASTM: GR A, GR B, GR C, GR D. JIS: SS330, SS440, SS490. EN BS: S185, S235JR, S235 G2H

Process Type: Hot Rolled/Hot Expanded, Electric Resistance/High Frequency,Cold rolled , Annealed(welded), 

End: Square Cut, Burr Removed 

Surface: Bare, Black Painting, Lightly Oiled,Black annealing,Galvanized 

Packing: Waterproof Paper Wrapped, Steel Strips Bundled, Two Tags on Each Bundle.

Size chart of mild steel square tube

Size (mm)	Wall Thickness(mm)	Size (mm)	Wall Thickness(mm)	Size (mm)	Wall Thickness(mm)	Size (mm)	Wall Thickness(mm)
10*10	0.6-0.8	42*42	1.2-6.0	90*90	2.5-6.0	150*150	4.0-8.0
12*12	0.6-0.8	45*45	1.2-6.0	95*95	2.5-6.0	160*160	4.0-8.0
13*13	0.6-2.0	48*48	1.2-6.0	100*100	2.5-6.0	180*180	4.0-8.0
15*15	0.7-2.0	50*50	1.5-6.0	105*105	2.5-6.0	200*200	5.0-10.0
16*16	0.7-2.0	55*55	1.5-6.0	110*110	3.0-6.0	220*220	8.0-25.0
20*20	1.0-3.0	60*60	1.5-6.0	115*115	3.0-6.0	250*250	8.0-25.0
25*25	1.0-3.0	65*65	2.0-6.0	120*120	3.0-6.0	280*280	8.0-25.0
30*30	1.2-4.0	70*70	2.0-6.0	125*125	3.0-6.0	300*300	8.0-25.0
35*35	1.0-4.0	75*75	2.0-6.0	130*130	3.0-6.0	350*350	8.0-25.0
38*38	1.0-5.0	80*80	2.5-6.0	135*135	4.0-14.0	400*400	8.0-25.0
40*40	1.0-6.0	85*85	2.5-6.0	140*140	4.0-8.0	450*450	8.0-25.0

Chemical composition of material
Grade	Element	C	Mn	P	S
ASTM A500 Gr.b	%	0.05%-0.23%	0.3%-0.6%	0.04%	0.04%

Acc.to EN10027/1	Acc.to EN10027/2	C% max (Norminal W.T.(mm)		Si% max	Mn% max	P% max	S% max	N% max
and IC 10		≤ 40
S235JRH	1.0039	0.17	0.2	-	1.4	0.045	0.045	0.009
S275JOH	1.0149	0.2	0.22	-	1.5	0.04	0.04	0.009
S275J2H	1.0138	0.2	0.22	-	1.5	0.035	0.035	-
S355J2H	1.0547	0.22	0.22	0.55	1.6	0.04	0.04	0.009
S355J2H	1.0576	0.22	0.22	0.55	1.6	0.035	0.035	-

Mechanical properties of material
Grade	Yield Strength	Tensile Strength	Elongation
A500.GR.B	46 ksi	58 ksi	23%
A513.GR.B	72 ksi	87 ksi	10%

Product Inspection

The inspector checks the height of the pipe.

The inspector checks the width of the pipe.

The inspector checks the WT of the pipe.

The inspector checks the length of the pipe.

Packing

There are probably hundreds of different methods for packing a pipe, and most of them have merit, but there are two principles that are vital for any method to work prevent rusting and Sea transportation security.
 
1)Plastic caps plugged at the two sides of pipe ends
2)Should be avoided by the steel strapping and transport damage
3)Bundled signs should be uniform and consistent
4)The same bundle(batch) of steel pipe should be came from the same furnace.
5)The steel pipe has the same furnace number, the same steel grade, the same specifications.

Our packing can meet any needs of the customers.

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