Factory directly Hh Tooth Bar - Seamless precision steels tubes – Xuansheng

Seamless precision steels tubes

Product Manufacturing Process

Tube blank

Inspection (spectral detection, surface inspection, and dimensional inspection)

Sawing

Perforation

Thermal inspection

Pickling

Grinding inspection

Lubrication

Cold drawing

Lubrication

Cold-drawing (the addition of cycled processes such as heat treatment, pickling and cold drawing should be subject to the specific specifications)

Cold drawing/hard BK or cold drawing/soft BKW or cold drawing and stress relieved BKS or annealing GBK or normalization NBK (selected according to customer’s needs)

Performance test (mechanical property, impact property, flattening, and flaring)

Straightening

Tube cutting

Non-destructive testing

Hydrostatic test

Product inspection

Immersion of anti-corrosive oil

Packaging

Warehousing

Product Manufacturing Equipment

Shearing machine/sawing machine, walking beam furnace, perforator, high-precision cold-drawing machine, heat-treated furnace, and straightening machine

Product Testing Equipment

Outside micrometer, tube micrometer, dial bore gage, vernier caliper, chemical composition detector, spectral detector, tensile testing machine, Rockwell hardness tester, impact testing machine, eddy current flaw detector, ultrasonic flaw detector, and hydrostatic testing machine

Product Applications

Chemical equipment, ships, pipelines, automotive parts, and mechanical design applications

Advantage

Precision seamless tube is a kind of high precision steel tube material after cold-drawn or hot-rolled treatment. Since precision steel tube has no oxidation layer on the inner and outer walls, bears high pressure without leakage, high precision, high finish, no deformation in cold bending, flaring, flattening without cracks and other points, it is mainly used to produce products of pneumatic or hydraulic components, such as cylinders or oil cylinders, which can be seamless tubes or welded tubes. Compared with solid steel such as round steel, it is lighter in weight when the bending and torsional strength is the same, and is an economic cross-sectional steel, widely used in the manufacture of structural parts and mechanical parts.
Features
1. High precision, saving the loss of material when machining users.
2. Many specifications, wide range of applications.
3. High precision, good surface quality and straightness of cold rolled finished products.
4. The inner diameter of steel pipe can be made into hexagonal shape.
5. Steel pipe performance is more superior, the metal is more dense.