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Stainless steel combination screw

Category: Screws,Combined screw, sems screws
Metarial: Stainless Steel
Standard: 304 316 316L
Surface: Plain
Place of Origin: 北京
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Beijing music ealy hardware mechanical and electrical co., LTD

Business Type:Manufacturer


Tel:  86-010-51228296
Fax:  86-010-51228298
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  • Product Detail

introduction
Stainless steel combination screw, the name is thought of justice, it is to use stainless steel screw wire production manufacturing. The stainless steel material of SUS304 stainless steel most. There are many types of combination of stainless steel screws, stainless steel pan head combination screw, also have stainless steel outside hexagon combination screw. Stainless steel pan head combination screw is refers to the stainless steel pan head screw with stainless steel ball pad in the match on stainless steel flat mat three assembly. Stainless steel outside hexagon combination screw is refers to the stainless steel phillips outside hexagonal recess bolt with stainless steel bomb flat mat three combination screw.
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Gb standard
Stainless steel combination screw standards, refers to gb, also is often said that kingdom label, cross pan head, cross the outside hexagonal. Also is stainless steel pan head combination screws, stainless steel cross outside hexagonal combination screw, and kingdom label have GB9074.8, GB9074.4. Stainless steel combination screw GB9074.8 refers to the stainless steel cross pannikin head combination screw. Stainless steel combination screw GB9074.4 refers to the stainless steel cross big pan head combination screw, big pan head combination screw and pannikin head combination screw difference is big pan head combination screw the supplied pan-head screws in the head than pannikin head combination screw the supplied pan-head screws in the head bigger, head thickness will a bit thick. Stainless steel cross outside hexagonal combination screw countries label for GB9074.13 [1].
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Manufacturing process
Stainless steel combination screw is made of stainless steel screw wire block play a. First pier hit supplied pan-head screws or outside hexagonal screw inspection, in using artificial the stainless steel flat play mat wear in the screw it. Will you have automatic wear pad machine voice, direct points screw, play mat, flat mat on each combination screw wear pad machine, machine automatic will rub, rub well later, automatic thread rolling. Rub good dental stainless steel combination screw, its color is ecru, at this time, you need to put the nature of the stainless steel combination screw clean, make it beautiful, bright. If the customer requirement for a smoke 72 hours above words, then, on the need to stainless steel combination screw take enterprise passivation. Make it salt fog up to 72 hours.
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plating
Stainless steel combination screw, maybe a lot of people will think stainless steel material will not rust, this kind of thought is wrong. SUS304 stainless steel combination screw in a particular situation, or will rust. For example: stainless steel combination screw in damp air of trigger electrochemical reaction, the stainless steel combination screw surface damage, referred to as the electrochemical corrosion. Stainless steel combination screw surface in accidentally adhesion organic SAP, oxygen in water, organic acid constitute, long time is organic combination of stainless steel screws for corrosion. Stainless steel combination screw in the pollution of air (such as sulfur dioxide, nitrogen oxide and carbon dioxide).
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Application of
Stainless steel combination screw is widely used in electric, electrical, mechanical equipment, electronic products, Marine, chemical industry, water conservancy, etc. Make its equipment product parts and components between the fastening.
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Salt fog time
Stainless steel combination screw salt fog test time, generally is first put the stainless steel combination screw in the salt fog machine inside, salt fog machine, read all know, fog, smoke. The stainless steel combination screw inside soak. In the later, write down the time, see stainless steel combination screw in many a little into later, rust, or stainless steel combination screw surface will have a layer of white bubble. General words, stainless steel combination screw of salt fog can more than 48 hours. Well, up to 72 hours are no problem.

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