Galvanized Square Tube

Galvanized Square Tube

3 year ago

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Shandong Rizhaoxin Metal Products Co., Ltd.

 3 year year

Product details

PRODUCT DESCRIPTION

Galvanized square tubes are divided into hot-dip galvanized square tubes and cold-dip galvanized square tubes from the production process.
Hot dip galvanized square tube
Hot-dip galvanized square tube: It is a square tube made of steel plate or steel strip after being crimped and welded. On the basis of this square tube, the square tube is placed in a hot-dip galvanizing pool after a series of chemical reactions. A square tube formed. The production process of hot-dip galvanized square tube is relatively simple, and the production efficiency is very high, and there are many varieties and specifications. This kind of square tube requires very little equipment and capital, and is suitable for the production of small galvanized square tube manufacturers. But in terms of strength, the strength of this kind of steel pipe is far lower than that of seamless square pipe.
Cold galvanized square tube
The cold-galvanized square tube uses the principle of cold-galvanizing on the square tube used to make the square tube anti-corrosion. Different from hot-dip galvanizing, cold-dip galvanizing mainly uses electrochemical principles to prevent corrosion. Therefore, it is necessary to ensure sufficient contact between zinc powder and steel to generate electrode potential differences. Therefore, surface treatment of steel is very important.
The difference between hot and cold galvanizing
There are two types of galvanized square tubes: hot-dip galvanized square tubes and electro-galvanized square tubes. There are wet method, dry method, lead-zinc method, redox method and so on for hot-dip galvanized square tube. The main difference between different hot-dip galvanizing methods is the method used to activate the surface of the pipe body to improve the quality of galvanizing after the steel pipe is pickled and cleaned. Dry method and oxidation-reduction method are mainly used in the current production, and their characteristics are shown in the table. The surface of the electro-galvanized zinc layer is very smooth and dense, with a uniform structure; it has good mechanical properties and corrosion resistance; the zinc consumption is 60% to 75% lower than that of hot-dip galvanizing. Electro-galvanizing is technically complicated, but it must be used for single-sided coating, double-sided coating with different thicknesses on the inner and outer surfaces, and thin-walled pipe galvanizing.
Product Details

Thickness	0.5-8mm；or as required
Dimensions	10-3000mm；(1/2inch~40inch)Dimensions
Length:	2000-12000mm，or as required
Technique	Hot Rolled
Standard:	ASTM，JIS，GB，DIN，EN
Payment Terms	T/T, L/C at sight,West Union
Heat Treatment	Annealed; Quenched; Tempered
Certification:	CE, ISO, SGS，BV，Mill Certificate
price terms	FOB,CFR,CIF,EXW, CPT
Grade	Q195—Grade B, SS330, SPC, S185Q215—Grade C,CS Type B, SS330, SPHC，Q235—Grade D, SS400, S235JR, S235JO, S235J2，Q345—SS500, ST52，S355JR
Delivery Detail	Standard has Stock; Normal About 3-5days; Custom-made 15-20days；According to order’s quantity.
Packing	standard export packing (inside:water proof paper,outside:fumigated wooden box)Hexagon Shape Bundle, Covered With Tarpaulin, Containers Or In Bulk

Steel grade	GB	JIS		ASTM	DIN
	Brand	Brand	Brand	Steel number	Steel number	Material number	Standard
Carbon	(Q235)	GGP	G3452	(A53- F)	(St33)	1.0033	DIN1626

Steel pipe		STPY41	G3457	A283-D
	10	STPG38	G3454	A135-A	(St37)	1.011	DIN1626

				A53-A
		STPG38	G3456	A106-A	St37-2	1.0112	DIN17175
		STS38	G3455		St35.8	1.0305	DIN1629/4

					St35.4	1.0309
		STB30	G3461	A179-C	St35.8	1.0305	DIN17175

				A214-C
		STB33	G3461	A192	St35.8	1.0305	DIN17175

				A226
		STB35	G3461		St35.8	1.0305	DIN17175
	20	STPG42	G3454	A315-B	(St42)	1.013	DIN1626

				A53-B	St42-2	1.0132
		STPT42	G3456	A106-B	St45-8	1.0405	DIN17175
		STB42	G3461	A106-B	St45-8	1.0405	DIN17175
		STS42	G3455	A178-C	St45-4	1.0309	DIN1629/4

				A210-A-1
Low alloy	16Mn	STS49	G3455	A210-C	St52.4	1.0832	DIN1629/4

Steel pipe		STPT49	G3456		St52	1.0831	DIN1629/3

CERTIFICATION

Hot dip Galvanized Steel Coils

FAQ

Q:Can I get samples before order ?

A:Yes, of course. Usually our samples are free,we can produce by your samples or technical drawings.

Q:Can I go to your factory to visit?

A:Of course, we welcome customers from all over the world to visit our factory.

Q:What product information do I need to provide?

A:You need to provide the grade, width, thickness, coating and the number of tons you need to purchase.

Q:Does the product have quality inspection before loading?

A:Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed.we accept third party inspection.

Q:How do we trust your company?

A:We specialise in steel business for years, headquarter locates in Liaocheng, Shandong province, you are welcome to investigate in any ways, by all means, we have CE and ISO9001 certificate, quality can be guaranteed.