I would like to take your short time to introduce our company as ISO9001 certified manufacturer for cold drawn, cold rolled precision seamless steel tube. Product: Hydraulic tube, honed tube, skived and roller burnished tube, cold drawn/rolled seamless steel tube, SRB tube, hydraulic cylinder tube, piston rod,ready to hone tube,prehoned seamless steel tube. Specifications Material:20# 45# 16Mn 27SiMn ST52,BK+S,DIN2391,ASTM A 106 or according to your requirement. Standard: GB/T8713-88 GB/T3639-2000 DIN 2391 EN10305 or according to your requirement. Straightness:0.3~0.8mm/m or according to your requirement Elongation: 14%-25% or according to your requirement. ID tolerance:H7-H8 Application: Mining industry, machinery processing, natural gas oil transportation exploitation etc. Process: Cold-drawn, cold-rolled, honed, SRB Delivery condition: BKS or according to customer's requirement Equipment: Cold drawn machine,honing machine,SRB machine,Point straightening machine,roller straightening machine,lathe Main Customers: Baosteel Shanghai Branch, Tianjin Pipe (Group) Corporation (TPCO), Ansteel Group Corporation, and some of its products even adopted on .imported materials for processing. products exported to the Middle East, South Asia, South America, Africa and other countries and regions more than 40 countries and regions.