Hi,Im interested in your product HOT dipped galvanized steel pipe GI square steel pipe tube structure building material, I would like some more details.As i needs Ms seamless tubes 17mm OD * 3.5 mm wall thickness * 6meter length at Karachi Port Pakistan on every month basis at about $400-430 Ton, 50-100tonsIf you can provide me so feel free to me look forward for your reply.Regards ,Asim RasheedAlloy Or Not:Non-alloyGrade:A315