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.
SAE AMS 5651 Steel bars,forgings,tubing,and rings,corrosion and heat resistant 25CR-20NI(SAE 30310)solution heat treated
SAE AMS 5648 Steel bars,forgings,tubing,and rings,corrosion and heat resistant 17CR-12NI-2.5MO (SAE 30316) solution heat treated
SAE AMS 5646 Steel,corrosion and heat resistant,bars,wire,forgings,tubing,and rings 18Cr-11Ni-0.60(Cb-Ta)(SAE
SAE AMS 5645 Steel bars,forgings,tubing,and rings,corrosion and heat resistant 18CR-10NI-0.40TI (SAE 30321) solution heat treated
SAE J527 Brazed double wall low-carbon steel tubing
SAE J526 Welded Low-Carbon Steel Tubing
SAE J525 Welded and Cold Drawn Low-Carbon Steel Tubing Annealed for Bending and Flaring
NBR 13780 Application of a coal based tar enamel in steel tubes and parts used for water supply
NBR 13222 Application of asphalt enamel in steel tubes and parts used for water supply
NBR 13061 Plain end steel tubes with elastic joint and nominal diameter between 700 mm and 1200 mm
NBR 12016 Zinc coated steel tubes,PN 150,with a rapid coupling joint for irrigation-determination of resistance to short term internal hydrostatic pressure
NBR 12015 Rapid coupling elastic joint for zinc coated steel tubes PN 150 for irrigation -performance check
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
