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Zinc steel pipes are divided into cold galvanized steel pipes and hot galvanized steel pipes, and cold galvanized steel pipes have been banned. ASTM A53 Z80 Hot-Dip Galvanized Pipe is formed by reacting molten metal with a ferrous matrix to create an alloy layer that combines the matrix and the coating. Hot-dip galvanizing is to pickle the steel pipe first. In order to remove the iron oxide on the surface of the steel pipe, after pickling, it is cleaned in the tank of ammonium chloride or zinc chloride aqueous solution or mixed aqueous solution of ammonium chloride and zinc chloride, and then sent to the in the hot dip bath. Hot-dip galvanizing has the advantages of uniform coating, strong adhesion and long service life. The hot-dip galvanized steel pipe substrate undergoes complex physical and chemical reactions with the molten plating solution to form a corrosion-resistant zinc-iron alloy layer with a compact structure. The alloy layer is integrated with the pure zinc layer and the steel tube substrate. Therefore, it has strong corrosion resistance.

Sanitary mirror tube process:
Tube blank→inspection→peeling→inspection→heating→piercing→pickling→grinding→lubrication and air drying→welding head→cold drawing→solution treatment→pickling→pickling passivation→inspection→cold rolling→oil removal→cutting head → air drying → inner polishing → outer polishing → inspection → identification → finished product packaging
Industrial tube process
Tube blank→inspection→peeling→inspection→heating→piercing→pickling→grinding→lubrication and air drying→welding head→cold drawing→solution treatment→pickling→pickling passivation→inspection

Q: Are you a manufacturer?
A: Yes , we are a seamless steel pipe  manufacturer, We have own factory, which is located in Shandong,China. We have a leading power in producing and exporting hot rolled seamless steel pipe,cold rolled seamless steel pipe,cold drawn seamless steel pipe and alloy seamless steel pipe etc. We promise that we are what you are looking for. 
Q:Can we visit your factory ?
A:Warmly welcome once we have your schedule we will pick you up .
Q: Do you have quality control?
A: Yes, we can accept BV, SGS third inspection .
Q: Can you arrange the shipment?
A: Sure, we have permanent freight forwarder who can gain the best price from most ship company and offer professional service.
Q: How long is your delivery time?
A: Generally it is 7-14 days if the goods are in stock. or it is 25-35 days if the goods are not in stock, it is according to quantity.
Q:How can we get the offer?
A:Please offer the specification of the product,such as material,size,shape,etc.So we can give the best offer.
Q:Can we get the some samples?Any charges?
A:Yes,you can get available samples in our stock.Free for real samples,but customers need to pay the freight cost.
Q: How do you make our business long-term and good relationship ?
A: 1.We keep good quality and competitive price to ensure our customers' benefit.
2.We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from.