Q235 Q355 Hot Rolled Square Steel Pipe

• After-sales Service: Change/Return
• Warranty: 1 Year
• Type: Welded
• Technique: Hot Rolled
• Material: Carbon Steel
• Surface Treatment: Black
• Usage: Construction & Decoration
• Section Shape: Round
• Transport Package: in Bundle or as Per Customer′s Request.
• Specification: ASTM A500, GB/T6728, JIS, BS.
• Trademark: Kingmetal
• Origin: China (Mainland)
• HS Code: 730619
• Production Capacity: 2000000 Tons/ Month

Product Description

Q235 Q355 Hot Rolled Square Steel Pipe 
 

Square hollow sections or square tubes are cold formed and welded from either hot rolled, cold rolled, pre-galvanized or stainless steel.

In order to form the square steel section the appropriate mother tube, a round steel tube, has to be formed first. From a round tube rolls are used that progressively press the round tube into a square hollow section. This is all done inline.
Square and rectangular steel tubes have the advantage of being stronger in bending while a round hollow sections has more stiffness in twisting.

Sizes : 20*20mm-400*400mm
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 square cut, End Capped Certification & supplementary test, Finishing & Identity Mark
Surface Protection : Black (Self Coloured uncoated), Varnish/Oil Coating, Pre-Galvanized, Hot Dip Galvanized

Dimension Chart

 

Size mm	kg/m	Size mm	kg/m
20 x 20 x 2.0	1.12	20 x 20 x 2.5	1.35
25 x 25 x 1.5	1.06	25 x 25 x 2.0	1.43
25 X 25 X 2.5	1.74	25 X 25 X 3.0	2.04
30 X 30 X 2.0	1.68	30 X 30 X 2.5	2.14
30 X 30 X 3.0	2.51	40 x 40 x 1.5	1.81
40 x 40 x 2.0	2.31	40 x 40 x 2.5	2.92
40 x 40 x 3.0	3.45	40 x 40 x 4.0	4.46
40 x 40 x 5.0	5.40	50 x 50 x 1.5	2.28
50 x 50 x 2.0	2.93	50 x 50 x 2.5	3.71
50 x 50 x 3.0	4.39	50 x 50 x 4.0	5.72
50 x 50 x 5.0	6.97	60 x 60 x 3.0	5.34
60 x 60 x 4.0	6.97	60 x 60 x 5.0	8.54
60 x 60 x 6.0	9.45	70 x 70 x 3.0	6.28
70 x 70 x 3.6	7.46	70 x 70 x 5.0	10.11
70 x 70 x 6.3	12.50	70 x 70 x 8	15.30
75 x 75 x 3.0	7.07	80 x 80 x 3.0	7.22
80 x 80 x 3.6	8.59	80 x 80 x 5.0	11.70
80 x 80 x 6.0	13.90	90 x 90 x 3.0	8.01
90 x 90 x 3.6	9.72	90 x 90 x 5.0	13.30
90 x 90 x 6.0	15.76	90 x 90 x 8.0	20.40
100 x 100 x 3.0	8.96	100 x 100 x 4.0	12.00
100 x 100 x 5.0	14.80	100 x 100 x 5.0	14.80
100 x 100 x 6.0	16.19	100 x 100 x 8.0	22.90
100 x 100 x 10	27.90	120 x 120 x 5	18.00
120 x 120 x 6.0	21.30	120 X 120 X 6.3	22.30
120 x 120 x 8.0	27.90	120 x 120 x 10	34.20
120 X 120 X 12	35.8	120 X 120 X 12.5	41.60
140 X 140 X 5.0	21.10	140 X 140 X 6.3	26.30
140 X 140 X 8	32.90	140 X 140 X 10	40.40
140 X 140 X 12.5	49.50	150 X 150 X 5.0	22.70
150 X 150 X 6.3	28.30	150 X 150 X 8.0	35.40
150 X 150 X 10	43.60	150 X 150 X 12.5	53.40
150 X 150 X 16	66.40	150 X 150 X 16	66.40
180 X 180 X 5	27.40	180 X 180 X 6.3	34.20
180 X 180 X 8	43.00	180 X 180 X 10	53.00
180 X 180 X 12.5	65.20	180 X 180 X 16	81.40
200 X 200 X 5	30.50	200 X 200 X 6	35.8
200 x 200 x 6.3	38.2	200 x 200 x 8	48.00
200 x 200 x 10	59.30	200 x 200 x 12.5	73.00
200 x 200 x 16	91.50	250 x 250 x 6.3	48.10
250 x 250 x 8	60.50	250 x 250 x 10	75.00
250 x 250 x 12.5	92.60	250 x 250 x 16	117.00
300 x 300 x 6.3	57.90	300 x 300 x 8	73.10
300 x 300 x 10	57.90	300 x 300 x 8	90.70
300 x 300 x 12.5	112.00	300 x 300 x 16	142.00
350 x 350 x 8	85.70	350 x 350 x 10	106.00
350 x 350 x 12.5	132.00	350 x 350 x 16	167.00
400 x 400 x 10	122.00	400 x 400 x 12	141.00
400 x 400 x 12.5mm	152.00	400 x 400 x 16	192

 

 

 

Company Profile
From 1989 to now, Kingmetal Steel focus on manufacturing and distributing pipeline products including piping, fitting, flange, valve and fastener in stainless, carbon, alloy and duplex steel.
Kingmetal has a factory to manufacture seamless stainless steel pipe from DN6 to DN600 and distribute seamless steel pipe and fitting from top brand manufacturers such as Baosteel, Hengsteel, Tiansteel and Pansteel etc.
All of products are strictly compliance with standard, 100% inspection passed including visual, dimension and PMI test before shipment.
Both our sales and logistic teams are over 10 years of experiences and training frequently.
After- sales service with high efficiency, if any products are short quantity/weight or damaged caused by manufacturing, design or transportation can be compensated.

Why choose us?
One-Stop Solution
We have thousands of total production experience, from raw materials to finished products.
Competitive Price
Large scale purchase, standardized production process and efficient management make our price competitive.
Quick Shipping
Years of export experience enable us to control the transportation time more accurately.
Quality Control
The standardized production process, comprehensive management system, professional testing equipment
Special material customization
We support the customization of various complex materials
OEM/ODM
We support any form of OEM/ODM customization requirements.