
Cov txheej txheem bolts feem ntau siv stainless hlau ua cov khoom siv hauv paus, uas ua rau lawv muaj kev tiv thaiv zoo heev thiab ua haujlwm ntev.
Cov txheej txheem bolts feem ntau siv stainless hlau ua cov khoom siv hauv paus, uas ua rau lawv muaj kev tiv thaiv zoo heev thiab ua haujlwm ntev. Cov qib stainless hlau feem ntau ua haujlwm muaj xws li 304 thiab 316. Qib 304 stainless hlau muaj kev tiv thaiv zoo rau kev tiv thaiv corrosion, ua rau nws tsim nyog rau kev siv sab hauv tsev thiab sab nraum zoov nrog rau ib puag ncig ib puag ncig. Qib 316 stainless hlau, uas muaj ntau dua ntawm molybdenum, muab kev tiv thaiv zoo rau cov tshuaj hnyav, dej ntsev, thiab cov xwm txheej huab cua, ua rau nws qhov kev xaiv zoo tshaj plaws rau marine, tshuaj, thiab kev tsim kho ntug dej hiav txwv.
Lub "HDG" nyob rau hauv cov khoom npe yog hais txog Kub - Dip Galvanizing (HDG), ib qho kev tiv thaiv ntxiv. Tom qab cov hlau tsis muaj steel bolts raug tsim, lawv muab tso rau hauv ib lub molten zinc da dej ntawm ib ncig ntawm 450 - 460 ° C. Cov zinc reacts nrog nto ntawm stainless hlau los ua ib tug series ntawm zinc - hlau alloy txheej, ua raws li los ntawm ib tug ntshiab zinc txheej txheej. Qhov tuab thiab ruaj khov galvanized txheej no ntxiv txhim khu kev tiv thaiv corrosion ntawm cov bolts, muab cov txheej txheem ntxiv ntawm kev tiv thaiv cov ntsiab lus thiab txuas ntxiv lawv lub neej kev pab cuam hauv ntau qhov chaw hnyav.
Cov khoom kab ntawm ASTM A325 / A325M HDG stainless - steel tag nrho / ib nrab - xov hnyav hexagon bolts encompasses ntau yam qauv categorized raws li ASTM tus qauv, nrog rau qhov loj, xov hom, thiab load - bearing peev:
Standard Metric thiab Imperial Models: Raws li ASTM A325 (imperial) thiab ASTM A325M (metric) cov qauv, cov bolts no muaj nyob rau hauv ntau qhov ntau thiab tsawg. Rau lub imperial system, diameters feem ntau yog li ntawm 1/2 "mus rau 1 - 1/2", thaum nyob rau hauv lub metric system, lawv txawv ntawm M12 mus rau M36. Qhov ntev ntawm cov bolts tuaj yeem sib txawv ntawm 2 "(lossis 50mm) mus rau 12" (lossis 300mm) lossis ntau dua, nyob ntawm cov ntawv thov tshwj xeeb. Cov qauv qauv muaj xws li tag nrho - xov lossis ib nrab - xov tsim. Tag Nrho - xov bolts muaj xov raws tag nrho cov shank ntev, muab kev ua tau zoo sib xws, thaum ib nrab - xov bolts muaj cov xov ntawm tsuas yog ib feem ntawm lub shank, uas yog qhov zoo rau cov ntawv thov uas tsis yog-threaded feem yuav tsum tau txo cov kev sib txhuam los yog rau kev thauj khoom tshwj xeeb.
High - Load - Peev Xwm Qauv: Engineered rau hnyav-lub luag hauj lwm cov ntaub ntawv siv, siab-load-muaj peev xwm bolts yog tsim los nrog loj diameters thiab thicker hex taub hau los lis ntau tensile thiab shear rog. Cov bolts no feem ntau yog siv rau hauv cov qauv kev sib txuas ntawm cov tsev loj, txuas hniav, thiab cov chaw tsim khoom. Lawv nruj me ntsis ua raws li qhov nruj me ntsis thiab kev ua tau zoo ntawm ASTM A325 / A325M cov qauv, kom ntseeg tau tias kev ua tau zoo nyob rau hauv cov khoom hnyav thiab cov xwm txheej hnyav.
Tshwj xeeb - Daim Ntawv Thov Qauv: Rau cov xwm txheej tsim tshwj xeeb, tshwj xeeb - daim ntawv thov qauv muaj. Cov no tuaj yeem suav nrog bolts nrog cov xov tshwj xeeb, qhov ntev ntev, lossis hloov lub taub hau duab. Piv txwv li, nyob rau hauv ib co complex qauv tsim, bolts nrog txuas ntxiv uas tsis yog threaded shanks los yog tshwj xeeb xov profiles yuav tsum tau kom tau raws li cov meej sib dhos thiab load - bearing yuav tsum tau. Cov qauv tshwj xeeb no tseem ua raws li ASTM A325 / A325M cov qauv tseem ceeb thaum muab cov kev daws teeb meem rau cov haujlwm tshwj xeeb.
Kev tsim khoom ntawm ASTM A325 / A325M HDG stainless - steel tag nrho / ib nrab - xov hnyav hexagon bolts suav nrog ntau cov kauj ruam meej thaum ua raws li ASTM cov qauv thiab kev tswj xyuas zoo:
Kev npaj khoom siv: High-quality stainless - steel raw cov ntaub ntawv, xws li steel tuav los yog rods, yog ua tib zoo sourced. Kev tshuaj xyuas nruj yog ua los xyuas cov tshuaj muaj pes tsawg leeg, cov khoom siv kho tshuab, thiab cov khoom zoo ntawm cov khoom, kom ntseeg tau tias lawv ua tau raws li qhov yuav tsum tau ua ntawm ASTM A325 / A325M cov qauv thiab cov qib qib stainless hlau. Cov ntaub ntawv stainless - steel yog ces txiav mus rau hauv qhov tsim nyog ntev raws li qhov tshwj xeeb qhov xav tau ntawm cov bolts.
Kev tsim: Hlau bolts feem ntau yog tsim los ntawm kev txias - taub hau lossis kub - forging txheej txheem. Txias - taub hau feem ntau yog siv rau me me - qhov loj me bolts. Nyob rau hauv cov txheej txheem no, stainless - hlau yog zoo li tus yam ntxwv hnyav hex taub hau thiab lub bolt shank siv tuag nyob rau hauv ntau theem. Txoj kev no muaj txiaj ntsig zoo rau kev tsim cov khoom ntim siab thiab tuaj yeem tsim cov ntaub ntawv xov thiab cov ntsia liaj qhov rooj zoo thaum tswj kev ua raws li cov qauv ASTM 's dimensional tolerances. Kub - forging yog siv rau loj los yog siab - lub zog bolts, qhov twg cov stainless - steel yog rhuab mus rau ib tug malleable lub xeev thiab ces zoo li tus nyob rau hauv siab siab kom ua tau raws li qhov yuav tsum tau muaj zog thiab qhov ntev qhov tseeb raws li cov qauv ASTM.
Xov: Tom qab tsim, cov bolts tau ua haujlwm threading. Rau tag nrho - xov bolts, threads yog tsim raws li tag nrho ntev ntawm lub shank, thaum rau ib nrab - xov bolts, threads tsuas yog tsim nyob rau hauv ib feem. Xov dov yog txoj kev nyiam vim nws tsim cov xov muaj zog los ntawm txias - ua haujlwm ntawm cov hlau, txhim kho qhov qaug zog ntawm cov bolts. Tshwj xeeb threading tuag yog siv los xyuas kom meej tias cov xov suab, qhov profile, thiab qhov ntev ua tau raws li qhov yuav tsum tau ua ntawm ASTM A325 / A325M tus qauv, lav kev sib raug zoo nrog cov txiv ntseej sib xws thiab lub qhov taub.
Kev kho cua sov (yog tias xav tau): Qee qhov xwm txheej, nyob ntawm qhov tshwj xeeb stainless - steel qib thiab cov ntawv thov, cov bolts tuaj yeem dhau los ua cov txheej txheem kho cua sov. Kev kho cua sov tuaj yeem ua kom zoo dua cov cuab yeej ntawm cov hlau tsis muaj steel, xws li txhim kho nws lub zog, hardness, thiab toughness, kom ua tau raws li qhov kev ua tau zoo ntawm cov qauv siv tau teev tseg hauv ASTM cov qauv.
Kub - Dip Galvanizing: Cov bolts tsim yog thawj zaug ntxuav kom huv si kom tshem tawm cov kab mob, roj, lossis nplai. Tom qab ntawd, lawv tau fluxed kom ntseeg tau tias ntub dej los ntawm zinc molten. Tom qab ntawd, cov bolts yog immersed nyob rau hauv ib tug molten zinc da dej ntawm kwv yees li 450 - 460 ° C rau ib lub sij hawm. Thaum lub sij hawm tus txheej txheem no, cov zinc diffuses mus rau saum npoo ntawm stainless hlau, ua ib tug series ntawm zinc - hlau alloy txheej thiab ib tug tuab txheej ntawm ntshiab zinc. Thaum tshem tawm ntawm lub da dej, cov bolts raug tso cai kom txias, thiab cov zinc ntau dhau raug tshem tawm. Cov txheej txheem kub-dip galvanizing no muab cov txheej txheem tiv thaiv zoo thiab ntev ntev.
Kev soj ntsuam zoo: Txhua pawg ntawm bolts yuav raug soj ntsuam nruj raws li ASTM A325 / A325M tus qauv. Dimensional checks yog ua los xyuas kom meej tias lub ntsia liaj qhov rooj txoj kab uas hla, ntev, xov specifications, lub taub hau loj, thiab thickness raws li tus txheej txheem cov kev cai. Kev ntsuam xyuas cov tshuab, suav nrog lub zog tensile, cov ntaub ntawv pov thawj, thiab cov kev sim hardness, yog ua los xyuas kom meej tias cov bolts tuaj yeem tiv taus cov loads uas tau teev tseg thiab ua tau raws li lub zog thiab kev ua haujlwm. Kev kuaj pom pom tau ua los xyuas qhov tsis xws luag ntawm qhov chaw, kub-dip galvanizing kev pab them nqi, thiab txhua yam tsis ua raws li tus qauv kev xav tau. Tsis tas li ntawd, kev ntsuam xyuas kev tiv thaiv corrosion kuj tuaj yeem ua kom ntseeg tau tias HDG txheej ua haujlwm tau zoo. Tsuas yog cov bolts uas dhau tag nrho cov kev ntsuam xyuas zoo tau pom zoo rau kev ntim khoom thiab xa tawm.
Qhov kub-dip galvanizing (HDG) nto kev kho mob yog ib qho tseem ceeb heev uas yuav pab tau kom cov kev ua tau zoo ntawm cov qauv bolts:
Kev kho mob ua ntej: Ua ntej kub - dip galvanizing, cov bolts tau dhau los ua kev kho mob ua ntej. Qhov no pib nrog degreasing, qhov twg cov bolts raug ntxuav siv cov kuab tshuaj los yog cov tshuaj alkaline kom tshem tawm cov roj, roj, lossis cov kab mob organic rau ntawm qhov chaw. Tom qab ntawd, pickling yog nqa tawm los ntawm immersing lub bolts nyob rau hauv ib tug acid tov (feem ntau hydrochloric los yog sulfuric acid) kom tshem tawm xeb, nplai, thiab lwm yam inorganic deposits. Tom qab pickling, bolts yog rinsed kom huv si kom tshem tawm cov residual acid. Thaum kawg, cov txheej txheem flux yog ua, qhov twg cov bolts tau dipped hauv cov tshuaj flux. Lub flux pab tshem tawm cov oxides uas tseem tshuav, txhim kho qhov ntub dej ntawm lub ntsia liaj qhov rooj los ntawm cov zinc molten, thiab tiv thaiv re-oxidation thaum lub sij hawm galvanizing txheej txheem.
Kub - Dip Galvanizing txheej txheem: Cov bolts uas tau kho ua ntej yog muab tso rau hauv lub molten zinc da dej ntawm ib ncig ntawm 450 - 460 ° C. Qhov kub siab ntawm zinc da dej ua rau cov tshuaj tiv thaiv metallurgical ntawm zinc thiab stainless - steel nto. Thaum pib, zinc atoms diffuse mus rau hauv stainless - steel substrate, ua ib tug series ntawm zinc - hlau alloy txheej nrog sib txawv compositions. Cov khaubncaws sab nraud povtseg no muab zoo heev adhesion ntawm zinc txheej thiab lub hauv paus hlau. Tom qab ntawd, ib txheej tuab txheej ntawm cov zinc ntshiab yog tso rau saum cov txheej txheej hlau. Lub thickness ntawm cov galvanized txheej feem ntau yog nyob ntawm 80 - 120 microns, nyob ntawm seb qhov loj thiab hom bolts, nrog rau cov kev cai tshwj xeeb ntawm ASTM cov qauv thiab daim ntawv thov.
Post-kev kho mob: Tom qab kub - dip galvanizing, cov bolts tuaj yeem raug kho tom qab - kev kho mob. Ib qho kev tshaj tawm - kev kho mob yog passivation, qhov twg cov bolts raug kho nrog tshuaj tov (xws li chromate - raws li los yog tsis - chromate - raws li kev daws teeb meem) los tsim ib txheej nyias, tiv thaiv oxide txheej ntawm zinc txheej. Qhov kev kho mob passivation no ntxiv txhim khu kev tiv thaiv corrosion ntawm galvanized txheej, txhim kho nws cov tsos, thiab muab qee qhov kev tiv thaiv tiv thaiv xeb dawb. Tsis tas li ntawd, cov bolts tuaj yeem raug tshuaj xyuas rau txhua qhov tsis sib xws ntawm qhov chaw, thiab qee zaum, lawv yuav raug rau cov txheej txheem xws li txhuam los yog tua - blasting kom tshem tawm cov zinc ntau dhau los yog ua kom du nto.
ASTM A325 / A325M HDG stainless - steel tag nrho / ib nrab - xov hnyav hexagon bolts yog dav siv nyob rau hauv ntau yam tseem ceeb kev tsim kho thiab kev lag luam kev siv:
Kev tsim vaj tsev: Hauv cov phiaj xwm loj hauv tsev, cov bolts no yog siv rau kev sib txuas cov kab hlau, kab, thiab trusses, tsim cov txheej txheem ntawm cov tsev. Lawv lub zog siab thiab zoo heev corrosion kuj, txhim kho los ntawm HDG kev kho mob, xyuas kom lub sij hawm ntev stability thiab kev ncaj ncees ntawm lub tsev qauv, txawm nws yog ib tug coj mus muag skyscraper, ib tug muaj warehouse, los yog ib tug nyob rau hauv high-ceev. Lub tag nrho / ib nrab - xov tsim tso cai rau hloov tau yooj yim thiab ruaj ntseg fastening nyob rau hauv sib txawv qauv kev sib txuas, ua tau raws li ntau yam kev cai ntawm lub tsev tsim thiab kev tsim kho.
Kev tsim kho choj: Cov choj yog raug rau ntau yam hnyav ib puag ncig, nrog rau kev ya raws, kev khiav tsheb - vim muaj kev vibrations, thiab cov khoom corrosive. Cov txheej txheem bolts no yog qhov tseem ceeb rau kev sib txuas cov khoom siv choj, xws li girders, piers, thiab decking. ASTM - raws li kev tsim qauv thiab cov txheej txheem HDG muaj zog ua kom cov bolts tuaj yeem tiv taus cov khoom hnyav, kev co, thiab xeb, ua kom muaj kev nyab xeeb thiab ua haujlwm ntev ntawm tus choj infrastructure hla nws lub neej kev pabcuam.
Cov Khoom Siv Muaj: Hauv kev lag luam cov nroj tsuag, refineries, thiab cov chaw tsim khoom, cov bolts no yog siv los sib sau ua ke cov tshuab hnyav, cov khoom siv thav duab, thiab kev txhawb nqa. Cov qauv siab-load-muaj peev xwm tuaj yeem tiv taus kev ua haujlwm hnyav thiab kev vibrations tsim los ntawm cov cuab yeej siv khoom lag luam. Lub corrosion - resistant khoom ntawm stainless hlau, ua ke nrog HDG txheej, tiv thaiv cov bolts los ntawm industrial pollutants, tshuaj, thiab ya raws, txo kev txij nkawm thiab txo qhov kev pheej hmoo ntawm kev ua hauj lwm tsis ua hauj lwm nyob rau hauv industrial chaw.
Offshore thiab Marine Structures: Rau offshore platforms, nkoj, thiab marine installation, qhov twg raug dej ntsev thiab hnyav marine ib puag ncig yog tas li, cov bolts no muaj nuj nqis heev. Qhov zoo tshaj plaws corrosion kuj ntawm 316 stainless hlau, nrog rau kev tiv thaiv ntxiv los ntawm HDG txheej, ua rau lawv muaj peev xwm tiv taus corrosive los ntawm seawater, av noo, thiab marine atmospheres. Lawv yog siv rau fastening ntau yam marine Cheebtsam, kom ntseeg tau thiab kev ruaj ntseg ntawm offshore thiab marine lug.
Infrastructure Projects: Hauv cov phiaj xwm kev tsim kho vaj tse xws li cov chaw tsim hluav taws xob, cov kav xa hluav taws xob, thiab cov chaw kho dej loj, cov txheej txheem bolts ua lub luag haujlwm tseem ceeb hauv kev ua kom ruaj khov thiab ua haujlwm ntawm cov qauv. Lawv ua raws li ASTM A325 / A325M cov qauv tau lees paub zoo ib yam thiab kev ua tau zoo, thaum HDG kev kho mob muab kev tiv thaiv ib puag ncig ntev, pab txhawb rau tag nrho cov kav ntev thiab kev pabcuam lub neej ntawm cov txheej txheem.
Siab zog thiab Load - Bearing Capacity: Ua raws li ASTM A325 / A325M cov qauv, cov bolts muaj lub zog siab thiab zoo heev load - bearing muaj peev xwm. Lawv tau tsim los tiv thaiv qhov tseem ceeb tensile, shear, thiab qaug zog loads, ua rau lawv tsim nyog rau kev sib txuas ntawm cov txheej txheem tseem ceeb hauv ntau yam kev tsim kho thiab kev lag luam. Kev tsim kho muaj zog, ua ke nrog kev xaiv tsim nyog ntawm qib stainless - steel qib thiab kev kho cua sov (yog tias tsim nyog), ua kom ntseeg tau tias kev ua tau zoo nyob rau hauv cov khoom hnyav thiab cov xwm txheej hnyav.
Superior Corrosion ResistanceKev sib xyaw ua ke ntawm stainless - steel puag khoom thiab kub - dip galvanizing muab superior corrosion kuj. Stainless hlau twb muaj kev tiv thaiv corrosion zoo, thiab HDG txheej ntxiv ib txheej ntxiv ntawm kev tiv thaiv cov ntsiab lus. Qhov no ua rau cov bolts tsim nyog rau kev siv nyob rau hauv ib puag ncig hnyav, suav nrog thaj chaw ntug hiav txwv, kev siv dej hiav txwv, thiab chaw lag luam nrog cov av noo lossis raug tshuaj lom neeg, ua rau lawv lub neej kev pab cuam thiab txo cov nqi tu.
Standardized thiab txhim khu kev qha tsim: Ua raws li ASTM A325 / A325M cov qauv, cov bolts no muaj cov qauv tsim, kom ntseeg tau tias muaj kev sib raug zoo thiab kev sib hloov ntawm cov haujlwm sib txawv thiab cheeb tsam. Qhov zoo nruj - tswj kev ntsuas thaum lub sijhawm tsim khoom, raws li qhov xav tau los ntawm cov qauv, lav zoo ib yam thiab kev ua haujlwm zoo. Qhov kev tsim qauv no yooj yim rau kev yuav khoom, teeb tsa, thiab kev saib xyuas cov txheej txheem, txo qhov kev pheej hmoo ntawm kev ua yuam kev, thiab muab kev thaj yeeb nyab xeeb rau cov engineers, cov neeg cog lus, thiab cov tswv haujlwm.
Versatile Xov Design: Qhov muaj ntawm ob qho tag nrho - xov thiab ib nrab - xov xaiv muab versatility nyob rau hauv ntau daim ntaub ntawv. Tag Nrho - xov bolts yog qhov zoo tagnrho rau cov ntawv thov uas yuav tsum muaj lub zog clamping nruj raws li tag nrho qhov ntev ntawm lub ntsia liaj qhov rooj, thaum ib nrab - xov bolts tuaj yeem siv los txhim kho cov khoom xa tawm, txo kev sib txhuam, lossis ua tau raws li cov qauv tsim tshwj xeeb. Qhov kev hloov pauv no tso cai rau kev kho kom haum rau kev daws teeb meem kom tau raws li qhov xav tau ntawm ntau yam kev tsim kho thiab kev lag luam.
Kev Tiv Thaiv Ntev Ntev: Cov txheej txheem kub-dip galvanizing tsim cov zinc txheej tuab thiab ruaj khov uas ua raws li qhov zoo ntawm cov hlau stainless. Cov txheej no muab kev tiv thaiv ntev-ntev tiv thaiv corrosion, abrasion, thiab lwm yam ntaub ntawv ntawm ib puag ncig degradation. Cov txheej txheem tom qab - kev kho mob, xws li passivation, ntxiv dag zog rau lub zog ntawm cov txheej, kom ntseeg tau tias cov bolts tuav lawv cov kev ua tau zoo thiab zoo li lub sijhawm ntev, txawm tias nyob rau hauv qhov chaw nyuaj tshaj plaws.
Txhim khu kev ruaj ntseg: Hauv kev siv cov qauv, kev ntseeg siab thiab kev ua haujlwm ntawm cov bolts no yog qhov tseem ceeb rau kev ua kom muaj kev nyab xeeb ntawm cov tsev, txuas hniav, thiab lwm yam kev tsim kho vaj tse. Lawv lub zog siab, kev tiv thaiv corrosion, thiab kev ua raws li cov qauv nruj ASTM ua rau muaj kev ncaj ncees ntawm cov qauv, txo qhov kev pheej hmoo ntawm kev ua haujlwm tsis zoo thiab ua kom muaj kev nyab xeeb ntawm tib neeg thiab cov khoom.