20# Precision tube is a kind of high-precision steel pipe material after cold drawing or hot rolling. Because the inner and outer walls of 20# precision steel pipe have no oxide layer, high pressure and no leakage, high precision, high smoothness, no deformation of cold bending, flaring, flattening without cracks, etc., it is mainly used to produce pneumatic or hydraulic components, such as The cylinder or cylinder can be a
seamless tube or a
welded tube. The chemical composition of the precision steel pipe includes carbon C, silicon Si, manganese Mn, sulfur S, phosphorus P, and chromium Cr.
The difference between 20# precision tube and seamless steel tube:
1. The main feature of seamless steel pipe is that it has no welded joint and can withstand large pressure. The product can be a very rough cast or cold-draw.
2. Precision steel pipes are products that have appeared in recent years, mainly due to strict tolerances and roughness of inner and outer wall sizes.
20# precision tube use:
Machinery, such as automobiles and machine parts, which have high requirements on the accuracy and smoothness of steel pipes. The current 20# precision steel pipe users are not only users with higher requirements on precision and smoothness. Because of the high precision of precision bright tubes, the tolerance can be maintained at 2--8 filaments, so many machining users save labor, materials and time. The loss, the seamless steel pipe or round steel is slowly turning into a precision bright tube.
20# precision tube execution standard:
20#The inner and outer walls of the precision tube have no oxide layer, withstand high pressure, no leakage, high precision, high smoothness, no deformation of cold bending, flaring, flattening without cracks, surface anti-rust treatment, widely used in precision steel pipes and injection molding machines for hydraulic systems. Precision steel pipe, precision steel pipe for hydraulic machine, steel pipe for shipbuilding, EVA foam hydraulic machine, seamless steel pipe for precision hydraulic cutting machine, shoe making machinery, hydraulic equipment, high pressure oil pipe, hydraulic oil pipe, ferrule joint, steel pipe joint , rubber machinery, forging machinery, die-casting machinery, engineering machinery, high-pressure steel pipes for concrete pump trucks, sanitation vehicles, automotive industry, shipbuilding industry, metal processing, military, diesel engines, internal combustion engines, air compressors, construction machinery, agriculture and forestry machinery, etc. It can completely replace the imported standard 20# precision steel pipe GB3639/T 20# precision steel pipe with the same standard.
Process flow: tube blank - inspection - stripping - inspection - heating - perforation - pickling - grinding - lubrication and air drying - welding head - cold drawing - solution treatment - pickling - pickling passivation - inspection - cold rolling - degreasing - cutting head - air drying - internal polishing - external polishing - inspection -identification - finished packaging.
