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.
ASTM A539 Electric resistance-welded coiled steel tubing for gas and fuel oil lines
ASTM A530 General requirements for specialized carbon and alloy steel pipe
ASTM A524 Seamless carbon steel pipes for atmospheric and lower temperatures
ASTM A523 Plain end seamless and electric-resistance-welded steel pipe for high-pressure pipe-type "cable circuits"
ASTM A519 Seamless carbon and alloy steel mechanical tubing
ASTM A513 Electric-resistance-welded carbon and alloy steel mechanical tubing
ASTM A512 Cold drawn buttweld carbon steel mechanical tubing
ASTM A511 Seamless stainless steel mechanical tubing
ASTM A501 Hot formed welded and seamless carbon steel structural tubing
ASTM A500 Cold formed welded and seamless carbon steel structural tubing in rounds and shapes
ASTM A451 Centrifugally cast austenitic steel pipe for high temperature service
ASTM A450 General requirements for carbon,ferritic alloy,and austenitic alloy steel tubes
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
