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 A 200 Seamless intermediate alloy steel still tubes for refinery service
ASTM A 192 Seamless carbon steel boiler tubes for high-pressure service
ASTM A179 Seamless cold drawn low carbon steel heat exchanger and condenser tubes
ASTM A 178 Electric-resistance welded carbon steel boiler tubes
ASTM A161 Seamless low-carbon and carbon-molybdenum steel still tubes for refinery service
ASTM A139 Electric-fusion arc-welded steel pipe (NPS4 and over)
ASTM A 135 Electric-resistance-welded steel pipe
ASTM A 134 Electric-fusion arc-welded steel pipe (sizes NPS 16 and over)
ASTM A106 Seamless carbon steel pipe for high temperature service
ASTM A53 Steel pipe,black and hot-dipped,zinc-coated,welded and seamless
AWWA C 605 Underaround installations of polyvinyl chloride(PVC)pressure pipe and fittings for water
AWWA C 214 Tape coating systems for the exte rior of steel water pipe lines
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
