High Precision Drawn Seamless tube Seamless precision
standard
DIN2391，DIN2445，EN10305， GB/T 3639 GB 8713.
material
ST35(E235)、ST37 、ST45(E255)、ST52(E355)，10#、20#、35#、45#， 16Mn，40Cr
application
Pneumatic or hydraulic components used to produce the product
Main Feature
1.high precision, saves the loss quantity when machining users
2.Specifications, wide range of applications
3.cold rolled finished products with high precision, good surface quality and good linearity.
4.Steel pipe diameter can be made into hexagonal
5.steel pipe superior performance, comparatively dense metal
Delivery condition:
1. NBK(+N)
after cold forming, eventually above phase transition point, in a protective atmosphere of annealing oxidation medium
2. GBK(+A)
after cold forming, annealing in non oxidizing medium protective gas
3. BK(+C)
the final heat treatment after cold forming, therefore small steel pipe plastically, the plastically degree does not guarantee
4. BKW(+LC)
after final heat treatment, a tiny cold drawing deformation, continue again when machining steel pipe allowed inside certain limits cold deformation(bending, flaring)
5. BKS(+SR)
have a stress relief after cold forming, heat treatment, steel pipe can be carried out within a certain limit in the appropriate processing again
Contact:harry li
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