- the first major type of stainless steel products: plate
There are many types of stainless steel plates with different properties, which have gradually formed several major categories in the development process. According to the organizational structure is divided into martensitic stainless steel plate (including Including precipitation hardening stainless steel plate), ferritic stainless steel plate, austenitic stainless steel plate and austenitic plus ferritic duplex stainless steel plate and other four categories. By The main chemical composition of the steel plate or some characteristic elements in the steel plate to classify, divided into chromium stainless steel plate, chromium-nickel stainless steel plate, chromium-nickel-molybdenum stainless steel plate plate and low carbon stainless steel plate, high molybdenum stainless steel plate, high purity stainless steel plate, etc., classified according to the performance characteristics and uses of steel plate, divided into nitric acid-resistant stainless Steel plate, sulfuric acid stainless steel plate, pitting stainless steel plate, stress corrosion resistant stainless steel plate, high strength stainless steel plate, etc. According to the functional characteristics of the steel plate Classification, divided into low temperature stainless steel plate, non-magnetic stainless steel plate, easy cutting stainless steel plate, super plasticity stainless steel plate, etc.. Now commonly used classification method is according to the steel The organizational structure of the plate and the chemical composition characteristics of the steel plate and the combination of the two methods of classification.
- Second, the second major type of stainless steel products: pipe
Stainless steel tubes are divided into ordinary carbon steel tubes, high quality carbon structural steel tubes, alloy structural tubes, alloy steel tubes, bearing steel tubes, stainless steel tubes and bimetallic composite tubes, plated and coated tubes to save precious metals and meet special requirements, etc. by material. There is a wide range of stainless steel tubes for different applications. Its technical requirements vary, and production methods are also different. The current production of steel pipe outside diameter range 0.1-4500mm, wall thickness range 0.01 ~ 250mm. to distinguish their characteristics, usually according to the following methods of classification of steel pipe.
(1) production method, stainless steel pipe according to the production method is divided into seamless and welded pipe two categories, seamless steel pipe can be divided into hot-rolled pipe, cold-rolled pipe, cold-drawn pipe and extruded pipe, etc., cold-drawn, cold-rolled is the second processing of steel pipe: welded pipe is divided into straight seam welded pipe and spiral welded pipe, etc.
(2) cross-sectional shape stainless steel tube according to the cross-sectional shape can be divided into round and shaped tube, shaped tube rectangular tube, diamond-shaped tube, oval tube, hexagonal tube, eight square tube and a variety of cross-sectional asymmetric tube, etc.. Shaped tubes are widely used for various structural parts, tools and mechanical components. Compared with round tubes, shaped tubes generally have a larger moment of inertia and cross-sectional modulus, a larger bending resistance, torsional resistance, can greatly reduce the weight of the structure, saving steel. Stainless steel tube according to the shape of the longitudinal section can be divided into equal section tube and variable section tube. Variable section tube has a tapered tube, stepped tube and periodic section tube.
(3) tube end shape stainless steel tube according to the state of the tube end can be divided into light tube and car wire tube (with threaded steel tube), car wire tube can be divided into ordinary car wire tube (transport Water, gas and other low pressure pipe, using ordinary cylindrical or tapered pipe thread connection) and special threaded pipe (oil, geological drilling pipe, for the important For some special pipes, in order to compensate for the influence of the thread on the strength of the pipe end, the pipe end is usually thickened before turning the thread. For some special tubes, to compensate for the influence of the thread on the strength of the tube end, the tube end is usually thickened before turning the wire (inside thickening, outside thickening or inside and outside thickening).
(4) Use classification According to the use can be divided into oil well pipe (casing, oil pipe and drill pipe, etc.), pipeline pipe, boiler pipe, mechanical structure pipe, hydraulic pillar pipe, gas cylinder pipe, geological pipe, chemical pipe (high-pressure fertilizer pipe, petroleum cracking pipe) and ship pipe, etc.
- Third, the third major type of stainless steel products: profiles
Profiles are the most widely used in the field of processing, and the products are innumerable. Listed here are the most common to: stainless steel tableware, stainless steel doors, stainless steel stainless steel tableware, stainless steel doors, stainless steel chairs, stainless steel cabinets, stainless steel display racks, stainless steel staircase handrails, stainless steel security windows, stainless steel hotel screens, public stainless steel sculptures, stainless steel water tanks, stainless steel nets, stainless steel locks, stainless steel screws, stainless steel reactors, even stainless steel soaps, etc. etc.