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ASTM A213 T5 alloy steel tube steel tube has good thermal conductivity, usually in the form of seamless steel tube with small size, mainly used for boiler tubes, heat exchanger tubes, and superheater
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Jiangsu Ruibo Industrial Technology Co., Ltd. is a 14 years professional gas spring gas strut manufacturer, we supply a full range of high quality compression gas springs, locking gas springs, tension
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Objective To determine the content of triptolide in Tripterygium wilfordii Hook f.by HPLC.Methods An external standard method was used with Angilent Zorbax SC-C18 …