China products Low price galvanized steel pipe

What is galvanized steel pipe?




Hot-dip galvanizing (HDG), as referenced is 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.  




Specification

DN	INCH	OD(mm)	WT(mm)	DN	INCH	OD(mm)	WT(mm)
15	1/2'	21.3	1.1-2.75	90	3 1/2'	108	2.0-4.5
20	3/4'	26	1.1-3.0	100	4'	114	2.0-4.75
25	1'	33.4	1.1-3.25	125	5'	140	2.0-4.75
32	1 1/4'	42.2	1.5-3.5	150	6'	165	2.0-4.75
40	1 1/2'	48.3	1.5-3.75	200	8'	219	3.0-6.25
50	2'	60.3	1.5-4.0	250	10'	273	3.0-6.25
65	2 1/2'	76	2.0-4.0	300	12'	325	3.0-10
80	3'	89	2.0-4.0	350	14'	355	3.0-10

Material list

Elements	Chemical Composition%					Mechanical Property
Material	C%	Mn%	S%	P%	Si%	Yield Point	Tensile Strength	Elongation
						(Mpa)	(Mpa)	(%)
Q195	0.06-0.12	0.25-0.50	<0.05	<0.045	<0.3	>195	315-430	32-33
Q235	0.12-0.2	0.30-0.70	<0.045	<0.045	<0.3	>235	375-500	24-26
Q345	<0.20	1.0-1.6	<0.04	<0.04	<0.55	>345	470-630	21-22