China wholesale Astm A500 Square Steel Tube - Manufacturer of galvanized square steel pipe for guardrail pipe – Zheyi

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Our products are widely recognized and trusted by users and can meet continuously changing economic and social needs for Carbon Steel Square Tube, Hss Square Tube, Hot Dip Galvanized Rectangular Tube, The principle of our company is to provide high-quality products, professional service, and honest communication. Welcome all friends to place trial order for creating a long-term business relationship.

China wholesale Astm A500 Square Steel Tube - Manufacturer of galvanized square steel pipe for guardrail pipe – Zheyi Detail:

Galvanized square pipe from the production process is divided into hot dip galvanized square pipe and cold galvanized square pipe. It is because of the different processing of these two galvanized square tubes that they have many different physical and chemical properties. In general, there are many differences in strength, toughness and mechanical properties.

Hot dip galvanized square pipe
Hot-dip galvanized square tube is a square tube made of steel plate or steel belt crimped and welded. On the basis of this square tube, the square tube is placed in the hot-dip galvanized pool and formed after a series of chemical reactions. The production process of hot-dip galvanized square pipe is relatively simple, and the production efficiency is very high, and the varieties and specifications are also many. This square pipe requires little equipment and capital, which is suitable for the production of small galvanized square pipe manufacturers. But from the strength of the steel tube strength is far lower than seamless square tube.

Cold galvanized square pipe
Cold galvanized square pipe is in the use of the principle of cold galvanized square pipe to have corrosion resistance. Different from hot dip galvanized cold galvanized coating is mainly anticorrosive through the principle of electrochemistry, so it is necessary to ensure sufficient contact between zinc powder and steel, resulting in electrode potential difference, so the steel surface treatment is very important.

Features
1. Size: 15mmx15mm-300x300mm
2. Material: Carbon steel
3. Factory price
4. Do small order

Specifications

Item	galvanized square steel tube
material	Q235B/Q345b/Ss400/A36/St37
certifications	ISO9001 /SGS
standard	ASTM BS GB API
size(dia)	1515mm-300300mm
item	black rectangular section pipe
size	1020mm-200400mm
technique	welded ,ERW ,cold rolled .hot rolled
surface	Bared, Galvanized, Oiled,Or Other Anti-corrosive Treatment.We can produce other specifications according to customers requirements.
packaging	1.Big OD:in bulk 2.Small OD:packed by steel strips 3. 20″GP:5.852.22.2 40″GP:11.852.22.2 Black steel pipe: oiled/painted, in bundles and tarpaulin outside According to the requirements of customers
inspection	With Chemical Composition and Mechanical Properties Analysis;Hydrostatic Test, Dimensional and Visual Inspection, Also With Nondestructive Inspection
Usage/Application	Mechanical & manufacture, Steel structure, Shipbuilding, Bridging ,Automobile chassisIndustrial water lines/plant piping, Vehicular chassis and frames, Idlers & belt conveyorsAgriculture and Irrigation, Scaffoldings, Electrical Cable conduits, Cooling towers, Antenna and Telecom Towers, Cold storages, Tabular polesFire Protection Systems, HVAC, Plumbing,Fabrication industry,
main market	North America South America Eastern Europe Southeast Asia Africa Oceania Mid East Eastern Asia Western Europe Central America Northern Europe Southern Europe South Asia Domestic Market
country of origin	china
Productivity	5000tons per month
delivery time	within 15 working days after receiving the payment or 100% Irrevocable L/C at sight

Pipe/ Tube Specifications

Size(mm)	Thickness(mm)	Size(mm)	Thickness(mm)	Size(mm)	Thickness (mm)	Size(mm)	Thickness (mm)
20*20	1.0	6060 5070 4080 5080 7070 6080 100*40	1.3	120120 14080 16080 75150 100150 16060	2.5-2.75	33450 300500 400*400	4.5-5.75
	1.3		1.4		3.0-4.0		7.5-11.75
	1.4		1.5		4.25-4.75		12.5-13.75
	1.5		1.7		5.25-6.0		14.5-14.75
	1.7		1.8		6.5-7.75		15.5-17.75
	2.0		2.0		9.5-15	450450 200600 300600 400500 400600 500500	4.5-4.75
2525 2030	1.3		2.2	130130 80180 140140 150150 200*100	2.5-2.75		7.5-7.75
	1.4		2.5-4.0		3.0-3.25		9.5-9.75
	1.5		4.25-5.0		3.5-4.25		11.5-13.75
	1.7		5.25-6.0		4.5-9.25		14.5-15.75
	1.8				9.5-15		16.5-17.75
	2.0	9090 7575 8080 6090 60100 50100 60120 50120 80*100	1.3	160160 180180 250100 200150	2.5-2.75
	2.2		1.5		3.5-5.0
	2.5-3.0		1.7		5.25-7.75
3030 2040 3040 2540	1.3		1.8		9.5-15
	1.4		2.0	150250 100300 150300 200200 135*135	2.75
	1.5		2.2		3.0-3.25
	1.7		2.5-4.0		3.5-7.75
	1.8		4.25-5.0		9.5-12.5
	2.0		5.25-5.75		12.75-15.75
	2.2		7.5-7.75	200300 250250 100400 200250	3.52-3.75
	2.5-3.0	100100 80120 12575 14060 50*150	1.5		4.5-11.75
2550 4040 3050 3060 4050 4060 50*50	1.3		1.7		12.5-14.75
	1.4		1.8		15.5-17.75
	1.5		2.0	200350 200400 300300 250350	4.75-7.75
	1.7		2.2		9.5-11.75
	1.8		2.5-5.0		12.5-14.75
	2.0		5.25-6.0		15.5-17.75
	2.2		6.5-7.75	300350 300400 350350 250450	4.75-7.75
	2.5-4.0		9.5-13		9.5-11.75
	4.25-5.0				12.5-14.75