Kína Framúrskarandi gæði Big Small Ryðfrítt stál Wood Skrúfa Framleiðandi & Birgir | Ruiye

Framúrskarandi gæði Big Small Ryðfrítt stál Wood Skrúfa

Stutt lýsing:

Efni: kolefni úr stáli Q195, Q235 / ryðfrítt stál

Stærð: M6 M8 M10 M12 M16 ...

Lengd: 25mm-160mm ...

Yfirborðsmeðhöndlun: galvaniseruðu


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Which has a positive and progressive attitude to customer's fascination, our company repeatedly improves our products quality to meet the desires of consumers and further focuses on safety, reliability, environmental requirements, and innovation of Excellent quality Big Small Stainless Steel Wood Screw, Welcome your enquiry, most effective service will likely be provided with full heart.
Which has a positive and progressive attitude to customer's fascination, our company repeatedly improves our products quality to meet the desires of consumers and further focuses on safety, reliability, environmental requirements, and innovation of Big Wood Skrúfa ,M8x1.5 Skrúfur ,Small Wood Skrúfa, Félagið okkar einbeita alltaf á þróun á alþjóðlegum markaði. Við höfum nú mikið af viðskiptavinum í Rússlandi, Evrópu, Bandaríkjunum, Mið-Austurlöndum löndum og Afríku löndum. Við fylgjum alltaf að gæði er grunnurinn en þjónusta er tryggt að hitta alla viðskiptavini.
Skrúfa:

A skrúfa er tegund af fastener, í sumum hátt svipuð to a bolt, venjulega gerð úr málmi, og einkennist af gormlaga hálsinum, þekktur eins og a  mótskrúfgang  (ytra thread). Skrúfur eru notuð til að festa efni með því að grafa í og wedging inn efni þegar kveikt, en þráður sker rásir á festi efni sem gæti hjálpað draga fest efnum saman og koma í veg fyrir draga út. Það eru margir skrúfur fyrir ýmsum efnum; þeir almennt fest með skrúfum eru tré, málmplötur og plast.

A skrúfa verður yfirleitt að hafa  hausinn  á annan endann sem inniheldur sérstaklega mynduð lögun sem gerir það að vera kveikt eða  ekið með tól. Algengustu verkfæri fyrir akstur skrúfur eru skrúfjárn og wrenches. Höfuðið er yfirleitt stærri en meginmál skrúfa, sem heldur skrúfuna frá því að vera rekinn dýpra en lengd skrúfuna og að veita  burðaryfirborð

Wood skrúfa:

Snemma tré skrúfur voru gerðar af hendi, með röð af skrá, chisels og önnur verkfæri klippa, og þær geta verið Spotted auðveldlega með því að átta sig á óreglulega bil og lögun þræði, auk skrá merki eftir á höfuð skrúfa og á svæðinu milli þræði. Margar af þessum skrúfum hafði barefli enda, alveg skortir verulega tapered punkt á næstum öllum nútíma tré skrúfur. Að lokum, Rennibekkir voru notuð til að framleiða tré skrúfur, með fyrsta einkaleyfi verið skráð 1760 í Englandi. Á 1850s Málmmótun verkfæri voru þróaðar til að veita fleiri samræmda og samkvæmur þráð. Skrúfur gert með þessum verkfærum með ávala dali með beittum og grófum þræði. Sumir tré skrúfur voru gerðar með klippa deyr eins snemma og seint 1700s (jafnvel áður 1678 þegar bókin efnið var fyrst birt í hlutum).

Þegar skrúfa beygja vélar voru í almennri notkun, voru mest auglýsing í boði tré skrúfur framleitt með þessari aðferð. Þessar skera tré skrúfur eru nánast undantekningarlaust lækkað, og jafnvel þegar tapered Shank er ekki augljóst, þeir má sjá af því að þræðirnir nái ekki framhjá þvermál shank. Slík skrúfur eru best sett upp eftir að bora tilraunaverkefni holu með tapered krónu. Meirihluti nútíma tré skrúfur, nema fyrir þá úr kopar, myndast á þráð völsunarvélar. Þessar skrúfur hafa stöðugt þvermál, þræði með stærri þvermál en shank, og eru sterkari vegna þess veltingur aðferð hjartarskinn ekki skera korn af málmi.


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