Changsha HCADTO Stainless Steel Co., Ltd.

The old standard is GB/T14976-2002, and the new standard is GB/T14976-2012. Their production process, manufacturing methods and testing standards are the same, and the quality, surface, wall thickness, and mechanical properties of   stainless steel seamless pipes   are the same. The difference is that the main element chromium in the chemical composition of the material is different. The old standard is 17% chromium, and the new standard is 18% chromium. This is formulated by the General Administration of Quality Supervision, Inspection and Quarantine of the PRC accordance to the WTO international standards and the American ASTM A959-09-A312 standard. This is because after China's accession to the WTO, product quality must meet international standards. HCADTO Stainless Steel Co., Ltd.  the Stainless Steel Division of ADTO GROUP, specializes in manufacturing stainless steel pipes, stainless steel angle bar, flat bar, round bar, square bar, hexagonal bar and channel bar in ...

Stainless steel flat bar  is a rectangular steel with pure edges. It can be divide into cold drawn polished stainless steel flat bar and hot-rolled acid white sandblasted stainless steel flat bar. The raw material billets for product stainless steel flat bar are low-carbon square steel billets, and the finished stainless steel flat bar are delivered in a hot-rolled, cold-rolled or hot-rolled state. Stainless steel flat bar can be composed of various stress-bearing components according to the different needs of the structure, and can also be used as a connects. It is widely used in building structures and engineering structures, such as house beams, bridges, power transmission towers, lifting and transporting machinery, ships, industrial furnaces, reaction towers, container racks and warehouse shelves, etc.. HCADTO Stainless Steel Co., Ltd.  the Stainless Steel Division of ADTO GROUP, specializes in manufacturing stainless steel pipes, stainless steel angle bar, flat bar, round...

For the stainless steel 304 and 321, the main difference is that 304 does not contain Ti, and 321 contains Ti. Ti can prevent stainless steel from sensitizing. Generally speaking, Ti can improve the high temperature service life of stainless steel. That is to say, 321 stainless steel plate is better than 304 stainless steel plate under high temperature. Both 304 and 321 are austenitic stainless steels, and their appearance and physical properties are very similar, just very small difference in chemical composition. First of all, 321 stainless steel is required to contain trace amounts of titanium (Ti) (according to the ASTM A182-2008 standard, the Ti content should not be less than 5 times the carbon (C) content, but not more than 0.7%, and 304 and 321 The carbon (C) content is 0.08%), and 304 does not contain titanium (Ti). Secondly, the requirements for nickel (Ni) content are different. 304 is between 8% and 11%, while 321 is between 9% and 12%. Third, the requirements for chromium ...

There are two kind of deform may happens on   stainless steel angle bar : 1. Ruler opened, that is the bars' angle bigger than 90 degree. Then place one wings on plateform at 45 degrees, then hammered. When correcting, pay attention to the correct hammering and the stable drop of the hammer, otherwise the angle steel is prone to torsion; 2. Rule closed, that is, when the bars' angle smaller than 90 degree, the edges of wings of the angle steel bar can be placed on the platform and hammered at the ridge line of the ruler, or the ridge line of the angle steel bar can be placed on the platform. Put the flat hammer in it, and then use the hammer to split the angle to a right angle. If it is slightly deformed, it can be corrected with a wrench. Larger angles can be placed on the edge of the platform, then use hammer to strike the edge of the angles in the opposite twisting direction.

What should we pay attention to in the constructing of  stainless steel channel bar ? The most important thing is fixed of the two sides of the stainless steel channel bar. Let's take a look: Precautions: 1. If you not sure the channel bar secured, then install a stainless steel channel bar support vertically to the ground at the position of the rung. When the rung is fixed, not every main keel needs a stainless steel channel bar. If it is less than 6 meters, there are jsut needs only two or three supports. 　　 2. The steel bar itself mustn' t be two sections in welded, it must be a whole one. Also, if your indoor plane is not square, but polygons, it should be handled according to the above principles.

The appearance quality of  stainless steel angle bar  is specified in the standard, and it is required that there should be no harmful defects such as delamination and cracks in usage. The angle bar standard also stipulates the allowable range of geometric shape deviation, which includes items such as curvature, side width, side thickness, apex angle, and theoretical weight. Here is  chemical composition testing. Chemical composition inspection Composition index: The main inspection indexes are carbon, manganese, and sulfur. Depending on the brand, the content ranges from 0.22% C, 0.30-0.65% Mn: 0.060% P, 0.060% S Inspection method: When testing the above chemical components, the inspection methods are GB223, JISG1211-1215, BS1837, BS Manual 19, гост 22536, etc. HCADTO Stainless Steel Co., Ltd.  the Stainless Steel Division of ADTO GROUP, specializes in manufacturing stainless steel pipes, stainless steel angle bar, flat bar, round bar, square bar, hexagonal bar and ...

  Stainless steel angle bar  is right-angle steel with two sides perpendicular. It can be used as force-bearing structures or connecting structure so that it widely used in various modern construction projects. Here we will introduce you its characteristics: 316 stainless steel angle bar: corrosion resistance, stable high temperature strength 321 stainless steel angle bar: corrosion resistance to crystal 410 stainless steel angle bar: strong resistance to welding deformation and high temperature resistance 430 stainless steel angle bar: strong corrosion resistance, good formability, excellent high temperature oxidation resistance 420 stainless steel angle bar: high quenching hardness, magnetic HCADTO Stainless Steel Co., Ltd.  the Stainless Steel Division of ADTO GROUP, specializes in manufacturing stainless steel pipes, stainless steel angle bar, flat bar, round bar, square bar, hexagonal bar and channel bar in various grades and sizes. Our years of production experience...

HCADTO Stainless steel have been in making stainless product over ten years, and we can tell that there is no best material, just best suitable for use. For example: 1. Stamping. 304  stainless steel plate  and 304DQ Taigang are good choice. 2. Acid and alkali resistance. 316L and 310S are better. 3. High temperature resistance. This can be 310S. 4. Polishing. That should be 304 stainless steel plate. 5. Bending. The soft series 304 is best. HCADTO Stainless Steel Co., Ltd.  the Stainless Steel Division of ADTO GROUP, specializes in manufacturing various stainless product, we are very professional in this field, hope we can have chance to help you with our skills.

Stainless steel profile can be divided into many kinds, they are stainless steel angle bar, stainless steel flat bar, stainless steel channel bar and so on. Stainless steel flat bar  is a rectangular steel with slightly pure edges. Stainless steel flat bar can be semi-finished steel. It can be divide into cold drawn polished stainless steel flat bar and hot-rolled stainless steel flat bar. The surface quality of stainless steel flat bar required that there should be no harmful defects in use, such as delamination, scarring, and cracks. The allowable range of geometric shape deviation includes curvature, side width, side thickness, apex angle, theoretical weight, etc.. Stainless steel flat bar can be used on bridges, house trusses, fences, power transmission ships, vehicles, etc.. HCADTO Stainless Steel Co., Ltd.  the Stainless Steel Division of ADTO GROUP, specializes in manufacturing stainless steel pipes, stainless steel angle bar, flat bar, round bar, square bar, hexagonal ...