Precision steel tube is characterized by high precision, and it is not easy to rust. But is not to say that since precision steel tube is not easy to rust we usually they will take care of it, directly put it aside. It would be wrong to do so because if precision steel tube ordinary maintenance, it will shorten the service life, also can bring unnecessary loss to our precision steel pipe. Customers buy precision steel tube inevitably, pushed for a longer service life, so you should pay attention to the daily maintenance of precision steel pipe.
In the storage of seamless steel tube, the priority for selecting Cold Drawn Seamless Tubes suitable sites, we need think about many external factors, corrosion of steel pipe and so on, so the site must be cleaned clean, dry and ventilated, harmful gas present place, Seamless steel tube are not present, weeds and other debris to keep clear of in time, to keep the steel surface clean.
In most cases, the small diameter seamless steel tube is used for conveying fluid pipe, compared with the round steel and other solid steel, the bending torsional strength phase at the same time, the weight is light, is a kind of economic cross section steel, is widely used in the manufacture of structural and mechanical parts, such as petroleum drill pipe, auto transmission shaft, bicycle frame, steel used in the construction scaffolding, etc. Small diameter seamless steel tube general specification is outside diameter between 6-89 - mm, its diameter is relatively small. Wall thickness during 1-12 mm also can be divided into small diameter thick-walled seamless pipe, small diameter thin-walled seamless tube. The weight calculation formula: [] - wall thickness (diameter) * wall thickness * = 0.02466 kg/m (weight of per meter)
If you want to make a smaller size and better quality seamless tube, cold rolling, cold drawing must be followed or a combination of both. Cold rolling is usually conducted on two-high rolling mill, steel pipe in variable cross stainless steel tube 304 section round hole groove and motionless conical head of rolling in the annular groove. Cold drawing usually on a single or double chain chain cold drawing machine for extrusion method, the hot tube billet in airtight extrusion cylinder hole rods and extrusion, extrusion from smaller extrusion die, so that you can produce the small diameter seamless steel tube.
When the electricity to the national steel supply and demand pattern influence remains limited, power serious area of 35 crmo thick-walled seamless steel tube production accounted for about 20% of the national production, although power grim, but large-scale "electricity" did not appear, then introduced some of the ways to reduce power serious meet first is still in the peak, peak output, thus influence on the steel supply and demand situation of nationwide is relatively limited.
In general, daily used seamless steel tube are normal size, will only be used in some special place to small diameter seamless steel tube. Today to introduce the related knowledge of small diameter seamless steel tube, help later aluminium coated tubes to better use of the pipe. In general, small diameter seamless steel tube are collectively referred to as small diameter seamless steel tube, but there is a specific range, general steel diameter under 89 mm, more than 4 mm can be called a small diameter seamless steel tube.