steelchinasupplier.com,steel pipe manufacturers,Shanghai ChangZeng Metal Co., Ltd. is a quality oriented company that provides the market with steel pipe manufacturers. To implement quality control, the QC team carries out the product quality inspection in line with international standards. Meanwhile, the product is closely monitored by the first-class third-party testing agency. No matter incoming detection, production process supervision or finished product inspection, it is done with the most serious and responsible attitude.
ChangZeng provides steel pipe manufacturers products that are selling well in United States, Arabic,Turkey,Japan,German,Portuguese,polish,Korean,Spanish,India,French,Italian,Russian,etc.
ChangZeng,Our company main produces carbon steel profiles,c beam steel,structural steel beams.