I le avea ai ma se tasi o gaosiga faʻapolofesa i Saina, DONGSHAO e manaʻo e tuʻuina atu ia te oe Round Head Bolts. Ma o le a matou ofoina atu ia te oe le auaunaga sili ona lelei pe a uma ona faʻatau ma tuʻuina atu taimi.
O le Hebei Dongshao Fastener Manufacturing Co., Ltd. ose ta'uta'ua fa'atau oloa ma fa'ameamea o fa'amau ulu lapotopoto i Saina.
O le uiga autu o le ulu lapotopoto na gaosia e le kamupani o le ulu o loʻo i totonu o se tulaga semicircle, ma o le ulu semicircle e iloga pe a uma ona viliina le faʻamau. O lenei mamanu e sili atu le aoga o le ulu lapotopoto pe a malepe, aua e faigofie ona uu i lima poʻo isi meafaigaluega. E le gata i lea, o le ulu o le ulu lapotopoto e lapotopoto, ma o le itu e foliga semicircular, lea e sili atu le matagofie o le vaʻaia, aemaise lava pe a faʻaaogaina i nisi taimi e manaʻomia foliga maualuga.
E tusa ai ma le fa'aogaina o meafaitino, o fa'amatalaga tutusa o fa'aulu ulu fa'ato'a ma fa'ailo ulu lapotopoto, fa'ailo ulu lapotopoto mai le voluma, mamafa, vaega i luga, ma isi, e matua tele atu nai lo fa'aulu ulu. E mafua ona o le mamanu o le ulu o le ulu lapotopoto e manaʻomia ai nisi mea e faʻatumu.
O faʻamau ulu ulu e faia i mea e sili ona lelei, faʻatasi ai ma le malosi maualuga ma le faʻafefeteina, e mafai ona tatalia le faʻaogaina o le siosiomaga ma tulaga faʻaogaina, o faʻaulu ulu lapotopoto e mafai ona faʻaaogaina lautele i taʻavale, fausiaina, masini ma eletise, mo le faʻamau, fesoʻotaʻiga poʻo le eletise. fa'apipi'i e iai le tele o fa'aoga.
(inisi) | #10 | 1/4 | 5/16 | 3/8 | 7/16 | 1/2 | 5/8 | 3/4 | 7/8 | 1 |
P | 24|32 | 20|28|32 | 18|24|32 | 16|24|32 | 14|20|28 | 13|20|28 | 11|18|24 | 10|16|20 | 9|14|20 | 8|12|20 |
ds max | 0.199 | 0.26 | 0.324 | 0.388 | 0.452 | 0.515 | 0.642 | 0.768 | 0.895 | 1.022 |
ds min | 0.182 | 0.237 | 0.298 | 0.36 | 0.421 | 0.483 | 0.605 | 0.729 | 0.852 | 0.976 |
dk max | 0.469 | 0.594 | 0.719 | 0.844 | 0.969 | 1.094 | 1.344 | 1.594 | 1.844 | 2.094 |
dk min | 0.438 | 0.563 | 0.688 | 0.782 | 0.907 | 1.032 | 1.219 | 1.469 | 1.719 | 1.969 |
k max | 0.114 | 0.145 | 0.176 | 0.208 | 0.239 | 0.27 | 0.344 | 0.406 | 0.469 | 0.531 |
k min | 0.094 | 0.125 | 0.156 | 0.188 | 0.219 | 0.25 | 0.313 | 0.375 | 0.438 | 0.5 |
r max | 0.031 | 0.031 | 0.031 | 0.031 | 0.031 | 0.031 | 0.062 | 0.062 | 0.062 | 0.062 |