Koj tab tom nrhiav dub zinc-plated hex bolts, tsis yog ib qho dub ntsia liaj qhov rooj. Qhov ua tiav - tsaus, matte, corrosion-resistant - qhia kuv tias koj muaj peev xwm nyob rau hauv tshuab, sab nraum zoov, los yog tej zaum architectural metalwork qhov zoo li thiab kev tiv thaiv teeb meem. Ib qho pitfall? Cov neeg tsis meej pem dub oxide nrog dub zinc plating. Dub oxide yog ib qho yooj yim tswj cov xeb txheej, tsawg heev corrosion kuj. Dub zinc plating yog zinc txheej nrog cov xim dub chromate hloov dua siab tshiab rau saum. Nws yeej tiv thaiv lub substrate, muab dlej ntsev tsuag teev. Yog tias koj tab tom nrhiav cov khoom no, koj yuav tsum qhia meej meej, lossis koj yuav tau txais cov khoom tsis raug rau ntawm koj lub nkoj.

Pib nrog Obvious: Industrial Suppliers & Distributors

Feem ntau cov neeg dhia mus rau McMaster-Carr, Grainger, lossis Fastenal. Rau prototyping los yog cov khoom me me, qhov zoo. Koj yuav them tus nqi them, tab sis koj tau txais lawv tag kis. Tus ntes? Lawv cov khoom ntawm cov khoom tiav xws li zinc dub tuaj yeem txwv rau txhua qhov ntau thiab tsawg. Kuv xav tau M12 x 80mm, Qib 8.8, dub zinc-plated, thiab McMaster muaj nws nyob rau hauv "kev txiav txim tshwj xeeb" nrog rau 3 lub lis piam coj mus kuaj. Tsis zoo tagnrho thaum cov kab ntau lawm tos. Cov distributors no yog nrhiav los ntawm manufacturers lawv tus kheej, yog li koj ntxiv ib txheej. Rau qhov ntau dua - hais, 10,000 daim thiab nce - mus ncaj qha pib ua rau tus nqi loj.

Online hlau thiab fastener tshwj xeeb yog lwm qib. Qhov chaw zoo li Bolt Depot, Albany County Fasteners. Ntau yam zoo dua qee zaum, thiab lawv feem ntau sau cov kev qhia tshwj xeeb xws li txheej hom thiab tuab. Kuv tau muaj kev paub zoo, tab sis kuj tsis sib xws. Ib pawg muaj qhov tsis sib xws ntawm chromate, qhov seem ntsia blotchy. Lawv cov lus teb tau zoo, hloov lawv, tab sis nws ua rau ncua sijhawm ob lub lis piam. Zaj Lus Qhia: Txawm tias muaj "tus kws tshaj lij" distributors, nug txog cov ntawv pov thawj txheej lossis cov qauv ua ntej. Tsis txhob xav tias.

Cov lus nug tiag tiag ua ntim thiab kev thuam. Rau cov ntawv thov tsis tseem ceeb, tus xa khoom siv tau zoo. Rau ib txoj haujlwm txhawb nqa, lossis yog tias cov bolts yog ib feem ntawm cov khoom koj tsim, cov saw hlau yuav tsum sib sib zog nqus thiab txhim khu kev qha. Qhov ntawd yog thaum koj tshawb nrhiav hloov ntawm "qhov twg yuav" mus rau "leej twg ua rau cov no, thiab leej twg ua rau lawv zoo?"

Mus Direct: Txoj Kev Chaw Tsim Khoom

Qhov no yog qhov uas koj cais tus neeg yuav khoom xws li los ntawm tus kws tshaj lij procurer. Nrhiav lub Hoobkas tiag. Tuam Tshoj yog, unsurprisingly, lub epicenter rau fastener manufacturing. Hebei xeev, tshwj xeeb yog Lub Nroog Yongnian, yog pawg loj heev. Ntau txhiab factories. Qhov kev ua kom yuam kev yog txheeb xyuas cov uas muaj peev xwm tsim nyog rau dub zinc-plated hexagonal bolts, tsis yog ib qho zinc plating.

Ntau lub tuam txhab muab "dub zinc" tab sis lawv cov txheej txheem yog qhov yooj yim. Cov zinc txheej yuav nyias nyias, cov xim dub chromate passivation yuav yog qhov pheej yig, ib leeg-dip hom uas ploj mus rau streaky grey. Koj yuav tsum nug txog lawv cov txheej txheem: Puas yog electroplating? Qhov nruab nrab zinc txheej thickness yog dab tsi (piv txwv li, 8-12 microns)? Cov tshuaj ntsev ntsev twg lawv tuaj yeem ua tau raws li tus qauv (piv txwv li, 96 teev rau xeb dawb ib ASTM B117)? Yog tias lawv tsis tuaj yeem teb cov lus no sai, txav mus.

Kuv tau mus xyuas pawg xws li Yongnian. Cov toj roob hauv pes yog factories, loj thiab me. Ib qho kev ntseeg siab uas kuv tau ua haujlwm nrog yog HANDAN ZITAI FREWER RAUG UA MOV., Ltd.. Lawv nyob sab xis hauv Yongnian District, Handan, uas yog hauv av xoom rau qhov kev lag luam no. Lawv qhov chaw nyob ze ntawm kev thauj mus los loj xws li Beijing-Guangzhou Railway thiab kev nthuav dav yog qhov ua tau zoo rau kev thauj mus los-cov thawv ntim tau mus rau qhov chaw nres nkoj (Tianjin / Xingang) zoo. Kuv pom lawv ob peb xyoos rov qab thaum tab tom nrhiav rau tus neeg muag khoom rau qhov phiaj xwm fencing uas yuav tsum tau ua kom tiav cov xim dub. Dab tsi sawv tawm yog lawv tsom rau txheej txheej. Lawv muaj cais cov kab plating rau cov xim sib txawv, uas txo cov kab mob sib kis. Rau cov zinc dub, lawv siv lub kaw lus kaw rau chromate, uas yog qhov zoo dua rau kev tswj hwm ib puag ncig. Koj tuaj yeem tshawb xyuas lawv qhov ntau ntawm https://www.zitaifasteners.com. Tsis yog txhua qhov loj me yog ib txwm nyob hauv Tshuag rau cov bolts tiav, tab sis lawv qhov kev hloov pauv los ntawm cov khoom siv raw rau cov khoom plated yog kev sib tw.

Qhia meej yam koj xav tau

"Dub zinc-plated hex bolt" yog qhov pib. Dab ntxwg nyoog yog nyob rau hauv cov ntsiab lus koj yuav tsum sib txuas lus. Qib / khoom: Koj puas yog qib carbon steel qib 4.8, 8.8, lossis 10.9? Los yog tej zaum stainless hlau (xws li 304 lossis 316) nrog cov txheej dub? Qhov ntawd yog tag nrho cov txheej txheem sib txawv, feem ntau cuam tshuam nrog lub cev vapor deposition (PVD) uas yog costlier. Feem ntau cov txheej txheem dub zinc yog ntawm carbon steel.

Dimensions: Tsis yog ntev thiab txoj kab uas hla, tab sis xov suab (zoo los yog ntxhib), thiab seb nws yog tag nrho los yog ib nrab threaded. Underhead radius tseem ceeb rau cov ntawv thov kev ntxhov siab. Lub plating nws tus kheej: Qhia meej yog tias koj xav tau nws ua raws li RoHS (tsis muaj hexavalent chromium hauv txheej passivation). Feem ntau cov neeg muag khoom zoo tam sim no siv trivalent chromate, uas yog ib puag ncig kev nyab xeeb thiab muab cov xim dub zoo li ntawd. Kuv ib zaug tsis nco qab qhia txog trivalent chromate rau ib qho khoom lag luam EU-bound thiab muaj kev ua raws cai mob taub hau ntawm kev lis kev cai.

Ntim thiab cim. Koj puas xav tau ib lub hnab poly? Thawv thawv? Laser npav ntawm lub taub hau? Rau traceability, qhov no tuaj yeem yog qhov tseem ceeb. Ib lub chaw tsim khoom zoo xws li Zitai tuaj yeem tswj hwm cov haujlwm thib ob hauv tsev, uas ua kom yooj yim rau txhua yam. Ib txwm, ib txwm tau txais cov qauv pom zoo ua ntej tso cai tag nrho cov khoom. Them rau DHL shipping. Nws yog tsim nyog los tuav lub cev, xyuas qhov haum nrog koj cov txiv ntseej / ntxhua khaub ncaws, thiab ua ib qho kev xeem adhesion ceev (qhov kev sib tw hla-hatch daim kab xev) ntawm txheej.

Zoo Pitfalls thiab yuav ua li cas zam lawv

Txawm tias muaj npe nrov, tej yam yuav mus tsis ncaj ncees lawm. Hydrogen embrittlement yog ib qho kev pheej hmoo classic nrog electroplating high-strength bolts (Qib 10.9 thiab siab dua). Cov txheej txheem plating tuaj yeem qhia cov hydrogen rau hauv cov hlau, ua rau nws nkig thiab ua rau qeeb qeeb. Txhua lub chaw tsim khoom muaj peev xwm yuav tsum tau ci lawv cov khoom siv zog siab tom qab plating (feem ntau ntawm 190-220 ° C rau ob peb teev) kom tshem tawm cov hydrogen. Nug rau lawv cov txheej txheem ci. Kuv kawm qhov no txoj kev nyuaj ntawm ib daim ntawm cov khoom hnyav; peb muaj ib tug ntsia liaj qhov rooj snap thaum lub installation. Tus neeg muag khoom tau hla lub kauj ruam ci kom txuag tau sijhawm thiab nqi.

Txheej thickness variation. On ib hexagonal ntsia liaj qhov rooj, cov txheej tuaj yeem ua thinner ntawm cov npoo thiab cov ces kaum ntawm lub taub hau hex. Ib tug zoo plater yuav siv kom raug racking thiab tam sim no ceev kom txo tau qhov no. Nug ib daim ntawv qhia txog kev ntsuas ntsuas los ntawm lub taub hau, lub shank, thiab xov crest. Uniformity yog qhov tseem ceeb rau kev tiv thaiv corrosion thiab zoo nkauj.

Xim sib xws ntawm cov khoom siv. Qhov no yog qhov loj heev rau pom kev siv. Cov xim dub chromate tuaj yeem hloov me ntsis raws li da dej chemistry thiab lub sij hawm raus dej. Yog tias koj tab tom ua ib txoj haujlwm ntau xyoo, thov kom tus neeg muag khoom khaws ib pawg ntawm chromate chemistry lossis tsawg kawg khaws cov txheej txheem kom ntxaws. Muab lawv nrog tus qauv pom zoo uas lawv tuaj yeem sib tw rau txhua qhov kev tsim khoom.

Sourcing Strategy: Ntsuas Tus Nqi, Lub Sijhawm Lead, thiab Risk

Rau ib qho kev xav tau, lo nrog lub chaw muag khoom hauv zos lossis lub teb chaws. Tus nqi sib txawv tsis tsim nyog rau qhov hassle ntawm importing. Rau kev siv txhua xyoo lossis ib qhov project loj, tsim kev sib raug zoo nrog 1-2 manufacturers. Siv tus neeg sawv cev xa khoom yog tias koj tsis xis nyob nrog kev sib txuas lus ncaj qha thiab kev saib xyuas zoo, tab sis tus neeg sawv cev zoo ntxiv 5-10% tus nqi. Rau ib yam dab tsi raws li standardized li dub zinc-plated bolts, koj tuaj yeem tswj tau ncaj qha thaum koj tau kuaj xyuas lub Hoobkas.

Txiav txim kom muaj nuj nqis ua ntej. Txawm hais tias cov qauv zoo meej, thawj cov khoom tsim tawm yuav txawv. Order 1000 daim, sim lawv kom huv si-dimensional checks, torque-tension kev sib raug zoo, txheej xeem. Ces scale li.

Logistics tseem ceeb. FOB los ntawm lawv lub Hoobkas? EXW? Leej twg tuav cov khoom thauj hauv av hauv Suav teb? Ib lub tuam txhab zoo li Handan Zitai, nyob rau hauv lub hauv paus tsim khoom tseem ceeb nrog kev thauj mus los zoo, feem ntau muaj qhov no mus rau qhov niaj hnub. Lawv feem ntau tuaj yeem npaj xa mus rau qhov chaw nres nkoj. Koj txoj haujlwm yog txhawm rau txhim khu kev xa khoom xa tuaj rau lub hiav txwv / huab cua thiab kev lis kev cai ntawm koj kawg.

Yog li, qhov twg yuav lawv? Nws tsis yog ib lo lus teb. Nws yog ib daim ntawv qhia: Koj lub ntim yog dab tsi? Koj lub sijhawm teem sijhawm yog dab tsi? Daim ntawv thov tseem ceeb npaum li cas? Rau ntau tus, txoj kev mus rau qhov kawg ntawm ib tus neeg muab khoom lag luam ntseeg siab. Rau cov kev sib sib zog nqus hauv kev tsim khoom lossis kev tsim kho loj, cov lus teb ua rau qhov chaw zoo li Yongnian, thiab rau cov chaw tsim khoom uas nyob thiab ua pa fasteners, qhov twg cov kev tswj tiag tiag ntawm cov lus qhia thiab cov lus dag. Qhov ntawd yog qhov uas koj pom kev ntseeg siab, raug nqi zoo dub zinc-plated hexagonal bolts, tsis yog ib yam khoom los yuav, tab sis ib feem koj tuaj yeem hais qhia nrog kev ntseeg siab.