Along with the years of entrepreneurial journey of Zhongyuan people, she gradually formed her own spiritual pillar and behavioral norms. In the silent inheritance, she guided Zhongyuan Company towards a more brilliant tomorrow.
NBR 5580 Carbon steel tubes for withworth threading,for common use in fluid conduction
NBR 5579 Shape and dimension superficial and internal deficiencies,in tubular steel products
NBR 5578 Tubular steel products
NBR 5577 Steel tubes classified by their method of application
NBR 5443 Double thickness steel tubes for fluid conduction
NBR 5393 Carbon-molybdenum seamless steel tubes for boilers and super heaters
NBR 5003 Steel plating for tubes used for oil and gas fluid transfer
NBR 123 Carbon and alloy steel tubes electrically welded for mechanical applications
NBR 121 Electrically welded carbon steel tubes for boilers and super heaters for use under high-pressure conditions
NBR 120 Manganese tubes electrically welded carbon steel for boilers
NBR 119 Cold rolled seamless low carbon steel tubes for heat exchangers and condensers
NBR 70 Carbon and alloy steel seamless tubes for mechanical applications
ADD：Chengnan Industrial Development Zone, Yanshan County, Hebei Province
Domestic phone number：0086-317-6689999
International call：0086-317-6165555
E-mail:9905791@qq.com
