GI steel tubes Zn coating 60-400g/m2

Name	GI steel tubes Zn coating 60-400g/m2
OD	21.3mm-600mm
Wall Thickness	0.6mm-30mm
Length	0.1m-12m
Sureface Treatment	Pre-Galvanized and hot dipped Galvanized
Material	Q195—Grade B, SS330, SPC, S185 Q215—Grade C,CS Type B, SS330, SPHC Q235---Grade D, SS400, S235JR, S235JO, S235J2 Q345---SS500, ST52
Standard	API 5L,ASTM A106 Gr.B,ASTM A53 Gr.B,BS1387,ANSI B36.10M-2004,DIN 2444,ASTM A179-1990,BS 3059-2,DIN 17175,DIN 1630,DIN 2448,BS 4568 etc.
Zinc coating	Pre-galvanized steel pipe: 60-150g/m2 hot dipped galvanized steel pipe:200-400g/m2
Payment terms	T/T,L/C at sight or Alibaba.com Trade assurance
Delivery terms	FOB/CIF/CFR
Port of loading	Tianjin port or any port in China

2.ingredient list

Elements   Material	Chemical Composition%					Mechanical Property
	C%	Mn%	S%	P%	Si%	Yield Point (Mpa)	Tensile Strength (Mpa)	Elongation (%)
Q195	0.06-0.12	0.25-0.50	<0.050	<0.045	<0.30	>195	315-430	32-33
Q215	0.09-0.15	0.25-0.55	<0.05	<0.045	<0.30	>215	335-450	26-31
Q235	0.12-0.20	0.30-0.70	<0.045	<0.045	<0.30	>235	375-500	24-26
Q345	<0.20	1.0-1.6	<0.040	<0.040	<0.55	>345	470-630	21-22