Pregalvanized pipe is made of metal and molten iron alloy body reaction layer, so that it can combine the coating and the matrix.Is hot dip galvanized steel pipes to pickling, in order to remove iron oxide on the surface of the steel tube after acid cleaning, by ammonium chloride or zinc chloride solution or ammonium chloride and zinc chloride aqueous solution tank, and then into the hot dip tank.Hot dip galvanizing has a advantage of uniform coating, adhesion strong, long life etc.

CNSG has 7 subsidiary companies include:

Sino Steel impex Co., Ltd. – Export company 

Tianjin Dongfang Haoyu International Trading Co., Ltd.- Export company  

Tianjin Sino Steel Pipe Co., Ltd, - Steel pipe factory with two produce line 

Tianjin Sino Steel Tube Galvanization Co., Ltd – Hot dip galvanizing factory with one producing line 

Tianjin Sino Steel Formwork Co., Ltd  - Scaffolding welded factory with 100 welding workers

Tianjin Zhongtian Steel pipe co., ltd – Pre galvanized steel pipe with 8 producing line     

Tianjin Dongfang Haoyu Technology Co., Ltd – solar strut and C channel with 8 producing line  

Built in 1995 with registered capital of RMB 120 million, we have an annual production capacity of 1000,000 MT and exporting quantity of 60,000MT .

As a professional manufacturer of steel products, we focus on the production of high-frequency welded pipes, galvanized steel pipes and scaffolding products along with solar power strut and C channel. Also other steel products can supplied by our trading company such seamless steel pipes and scaffolding accessory.

1. Q : How do I pay for my purchase order?
A : T/T, L/C at sight, In cash, 

3. Q : What's the MOQ?
A:10 ton ,as your requirement
4. Q : What's the delivery time?
A: It will take about 15-30days to finish an order. But the exact time is according to actual situation.
5. Q : Can I have my own customized product?
A : Yes, your customized requirements for color, size, package, mark, etc.
6. Q : Do you have quality control?
A: Yes, we attach great importance to quality control.And the third party inspection is accepted, such as SGS,BV,etc.