Chengdu Heyi Steel Tube Industry Co.,ltd,specializes in marketing and selling seamless steel tubes.We are the Agent of PANGGANG GROUP CHENGDU IRON&STEEL CO.,LTD(PGG CSST). PGG CSST is one of the largest full-range domestic seamless steel tube makers and the biggest construction steel product manufacturer in the western region of China.
        About the products ,we are the Special Agent for Hydraulic Support Prop and Machining Purposes of PGG CSST.There are many customers uses our Hydraulic Support Prop and Machining Purposes , We know many foreign Coal Mining Machinery industries uses 25CrMo4(DIN standard) seamless steel tube .While, almost all coal mining machinery industries uses 27SiMn(GB/T17396-1998)in China . One of our customers is ZHENGZHOU COAL MINING MACHINERY(GROUP) CO.,LTD.,.
        Of course, 27SiMn(GB/T17396-1998) superior in the purchase cost. 27SiMn(GB/T17396-1998) was developed by PGG CSST and ZHENGZHOU COAL MINING MACHINERY(GROUP) CO.,LTD., together in the seventies of the 20th century,and China Coal Mining Machinery uses it from then on.
        With the developing of PGG CSST, 27SiMn would be more perfect.
        As the Special Agent of 27SiMn,we hope we could supply high quality and good cost performance products to Coal mining machinery industry.
        If you have some especial request, please let us know your specific requirements. It will be a great pleasure to receive your requirements and establish win-win relationship between us.