Seamless Hydraulic Tube----Structural carbon steel pipes
Product Name
W-Nr.1.8161, W-Nr.1.7561,W-Nr.1.7707,W-Nr.1.7735 structural carbon steel pipes
Standard&Material
DIN EN 10083-3(2006)
DIN 17200(1987)
Technology
Hot rolled & Cold drawn
720units,325units,170units,90units,50units
Heat treatment
Annealing
Incomplete annealing
Complete annealing
Spheroidizing annealing
Stress relieving
Normalizing
Carburization, Nitridation
Quenching
Oil quenching, Water quenching
Tempering
Low-temperature tempering, High-temperature tempering
Delivery state
BK(+C)Tubes do not undergo heat treatment following the final cold forming and, thus, have a rather high resistance to deformation.
BKW(+LC)The final heat treatment is followed by cold drawing involving limited deformation. Appropriate further processing allows a certain degree of cold forming.
BKS(+SR)Heat treatment is applied following the last cold forming process. Subject to appropriate processing conditions, the increase in the residual stresses involved enables both forming and machining to a certain degree.
GBK(+A)The last Cold forming process is followed by annealing in a controlled atmosphere.
NBK(+N)The last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere.
Surface treatment
Black painting, anti-rust oil, bluing, galvanization, coppering,black anodizing
Advantage
1.Pipes are cut to sections to avoid anti-dumping fax.
2.Pipe can be cut to sections,pipe blanks,parts did heat treatment and surface treatment are available to export, this highly lower customer’s cost.
3.50000 tons are produced one month. Large quantity for stock. In-time delivery. Order-made for special products.
4.Pipes are machined to hydraulic cylinder, cylinder accessories, pneumatic cylinder for export.