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Hebei Machinery Import and Export Co., Ltd. was transformed into joint-stock foreign trade company in October 2005. As its predecessor, Hebei Branch of China National Machinery Import &Export Corporation was founded in October 1974, which was the earliest export and import company focusing on mechanical and electrical products in Hebei province……
tube and pipes
Casting Materials of Valves ASTM Casting Materials Material ASTM Casting SPEC Service Carbon Steel ASTM A216 Grade WCB Non-corrosive applications including water, oil and gases at temperatures between -20°F (-30°C) and +800°F (+425°C) Low Temp Carbon Steel ASTM A352 Grade LCB Low temperatu...
Old and new DIN Designations Over the years, many DIN standards were integrated into the ISO standards, and thus also a part of the EN standards. In the cource of the revision of the European standards serveral DIN standards were withdrawn and replaced by DIN ISO EN and DIN EN. The standards used...