Galvanized Steel Pipe

Galvanized Steel Pipe

What is hot dipped galvanized steel pipe?

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Hot-dip galvanizing (HDG), as referenced in the process of dipping fabricated steel into a kettle or vat of molten zinc. While the steel is in the kettle, the iron metallurgically reacts with the molten zinc to form a tightly-bonded alloy coating that provides superior corrosion protection to the steel.

What is pre galvanized (GI) round steel pipe?

The pre-galvanized welded steel pipe refers to welded tube which undergoes decreasing, rust removal, phosphorization, and drying processes before galvanization.The treatments before galvanization allow the product to be conveniently plated with a zinc coating and also ensure uniform coating thickness, strong coating adhesion, and improved corrosion resistance

What is ERW welded round steel pipe?

Welding pipes is one of the simplest and most durable ways to join piping together and steel pipes can simply be welded together with MIG (metal inert gas), TIG (tungsten inert gas or SMAW (stick metal arc) welding. Before welding two pipes together, avoid any gaps between the two pipes. While welding, take measures to ensure the continual alignment of the two pipes.

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DN	INCH	OD(mm)	WT(mm)	DN	INCH	OD(mm)	WT(mm)
15	1/2''			400	16''
20	3/4''	26		450	18''
25	1''			500	20''	508	6-14
32	1 1/4''			550	22''		6-14
40	1 1/2''			600	24''		6-14
50	2''			650	26''		6-14
65	2 1/2''	76		700	28''		6-14
80	3''	89		750	30''	762	6-14
90	3 1/2''	108		800	32''		8-20
100	4''	114		850	34''		8-20
125	5''	140		900	36''		8-20
150	6''	165		1000	40''	1016	8-20
200	8''	219		1050	42''		8-20
250	10''	273		1100	44''		8-20
300	12''	325		1150	46''		8-20
350	14''	355		1200	48''		8-20

Specification

Material list

Elements	Chemical Composition%					Mechanical Property
Material	C%	Mn%	S%	P%	Si%	Yield Point	Tensile Strength	Elongation
						(Mpa)	(Mpa)	(%)
Q195			<0.05	<0.045	<0.3	>195	315-430	32-33
Q235			<0.045	<0.045	<0.3	>235	375-500	24-26
Q345	<0.20		<0.04	<0.04	<0.55	>345	470-630	21-22

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