Grade 8.8 Hot Dip Galvanized Hex Bolts hmanga Solar & Infrastructure hman tur a ni
Product chungchang tlangpui
Structural steel project, khaw lum lutuk avanga awm tan chuan standard fastener hi a tawk lo. Handan Dongchao Hardware Products Co., Ltd. hian Grade 8.8 Hot Dip Galvanized (HDG) Hex Bolts siamin, pawn lam boruak khirh ber pawh tuar thei tura engineer a ni.
Standard zinc-plated bolt ang lo takin kan HDG hex bolt hian metallurgically bonded zinc-iron alloy coating a nei a, rust, UV degradation, leh chemical corrosion lakah venhimna tha zawk a pe a ni. Heng bolt te hi utility-scale solar farm, transmission tower, leh outdoor steel framework te tana industry standard a ni a, chutah chuan failure chu option a ni lo.
Engvangin nge Grade 8.8 HDG Hex Bolts hi kan thlan?
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Extreme Strength: Heat-treat a nih chuan 800 MPa tensile strength tling emaw a aia tam emaw a ni.
Unmatched Durability: Hot-dip process hian zinc layer thick, abrasion-resistant (a tlangpuiin 60–85μm) a siam a, chu chu pawnah kum 15–20+ chhung a awm thei.
Self-Healing Protection: Coating chu a hrual a nih chuan a chhehvel zinc chuan inthawinain steel chu a humhim a ni.
Khawvel pum huapa zawm dan: DIN 931/933, ASTM A307/A325, leh ISO 4014/4017 standard anga siam a ni.
Technical lam thil chi hrang hrang
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Parameter a ni A sawifiahna Notes Bungrua Carbon Steel atanga siam a ni C1035, C1045 Chakna Grade a ni Pawl 8.8 a ni Tensile: 800 MPa / A chhuah zat: 640 MPa a ni Surface Finish a ni Hot Dip Galvanized (HDG) hmanga siam a ni. ASTM A153 / ISO 1461 hmanga siam a ni Zinc Coating Thickness a ni 60μm - 85μm Project pakhatah customizable theih a ni Standard hrang hrang DIN 931, DIN 933, ISO 4014, ISO 4017, ASTM OEM Standards pawm a ni
Size awm thei te
- A zau zawng: M8, M10, M12, M16, M20, M24, M30 te a ni
A sei zawng: 10mm - 300mm (Custom sei zawng a awm)
Thread: Thread kimchang (DIN 933) / Thread thenkhat (DIN 931)
Dilna hrang hrang
- Solar Mounting Systems: Leia dahna, inchung chunga bracket, leh tracker system te.
Telecom & Transmission: Steel lattice tower, antenna dahna, leh substation structure te siam a ni.
Heavy Construction: Steel warehouse, bridge components, leh pawn lama scaffolding te.
OEM & Thil siam chhuah theihna
- Handan, China-a direct factory kan nih angin OEM/ODM support kimchang kan pe a:
Custom Marking: Bolt lu-ah hian strength grade emaw logo emaw engraving a awm.
Custom Packaging: Pallet, thing case, emaw labeling bik emaw export tur.
Quality Assurance: Third-party inspection (SGS, BV, TUV) te chu dil theih a ni. -
Product Features te pawh a awm
- HDG coating thick tak nen corrosion resistance sang tak a nei bawk
- Pawn lama structural load atana tha tak tensile strength sang tak
- Khawvel pum huap standard hrang hrang a zawm
- Pawn leh tuipui kama awmte tan long life service
- Full thread leh partial thread-ah a awm
- Custom size, stamping, leh packaging te pawh a awm
Engvangin nge engineer leh contractor te hian kan bolt te hi an rin tlat
1. Grade tak tak 8.8 Chakna
Heat treatment chungchangah hian corner kan cut lo. Kan bolt te hian a mamawh 800 MPa tensile strength a hit a. Structural steel atana i mamawh mechanical property te chu snapping risk awm lovin i hmu thin.
2. Thick Zinc hi a dam rei theih nan
Standard electroplated bolt (blue/yellow zinc) hi in chhunga hman tur chauh a ni. Kan Hot Dip Galvanized bolt te hian zinc finish thick, rough tak tak, pawn lama inhmuhna atana siam bik a nei a. He coating hian steel chu a hrual a nih chuan a humhim nan a inhlan a ni.
3. Factory atanga direct a man pek dan
Handan-a kan siam avangin raw rod atanga final packaging thlengin quality kan control a ni. Factory-direct pricing i hmu a, infrastructure project hrang hranga OEM order lian tak tak kan buaipui thei bawk.
Kan Material Selection hian Project-ah A Hneh Chhan
Kan steel hmang hian kan guess lo. Cost leh performance inthlauhna atan application dik tak atan grade dik tak kan thlang thin.
1. "Sweet Spot" tih hmanrua (SWRCH35K & 10B21) te hi a ni.
Standard Grade 8.8 bolt atan chuan SWRCH35K (Japanese Cold Heading Steel) emaw 10B21 (Boron Steel) emaw kan hmang ber a ni.
Engati nge? Heng materials te hian cold heading performance tha tak an nei a, consistent hardenability an nei bawk.
The Benefit: Carbon steel man tlawm tak, heat treatment-a crack thin ang lo takin, heng grade te hian microstructure inang tlang tak an vawng reng a ni. Hei hi hot-dip galvanized bolt-a failure mode awm fo hydrogen embrittlement-venna atan a pawimawh hle.
2. Carbon chakna sang-Steel (35# & 45# Steel) a ni.
Diameter lian zawk bolt emaw, yield strength sang zawk mamawhna emaw atan chuan high-quality 35# emaw 45# Medium Carbon Steel kan hmang thin.
The Process: Hengte hi quenching leh tempering dik tak a ngai a ni. Furnace temperature chu℃thlengin kan control a.
The Result: Bolt i hmu a, chu chuan 800 MPa tensile strength kimchang a hit thei a, a brittle lo.
3. Premium Alloy duhthlan tur (40Cr) .
Extra toughness mamawh nge temperature hniam taka hnathawh? 40Cr (Alloy Steel) tihchangtlunna kan pe a.
Hman dan: Heavy-duty transmission tower emaw vibration sang tak awmna environment atan a pawimawh hle. He material hian standard carbon steel nena khaikhin chuan core hardness leh fatigue resistance tha zawk a pe a ni.
Kan chemistry hi kan thup lo. Kan bolt chhunga lut chu hetiang hi a ni:
| Material Grade a ni | Standard Type a ni | Carbon (C) awm zat | Thil pawimawh tak | Best For |
|---|---|---|---|---|
| SWRCH35K tih a ni | JIS G 3507 ah a awm | ~0.35% | Cold heading tha tak, cracking risk hniam tak a ni | Standard Solar Bolt hmanga siam a ni |
| 10B21 | ASTM / SAE hmanga tih a ni | ~0.20% + Boron a ni | Hardenability sang tak, man tlawm-effective | Volume sang tak order te |
| 45# Thir a ni | GB/T 699 a ni | ~0.45% | Heat treatment hnua chakna sang tak | Bolt Diameter lian tak tak a awm |
| 40Cr a ni | GB/T 3077 a ni | ~0.40% + Chromium a ni | Toughness sang tak, wear resistance a nei bawk | Thil pawimawh tak tak (Critical Structures) te |
A chunglam chu Hot Dip Galvanized (HDG) hmanga siam a ni.
Steel eng pawh ni se, kan coat dik hle.
Process: Immersion in molten zinc (>450℃a ni ).
A thuk zawng: 60μm - 85μm (ASTM A153 Class C / ISO 1461) a ni.
Note: HDG hian thickness a tihpun avangin, nut te chu a fit tha em em theih nan galvanizing hnuah thread te chu re-cut emaw tap emaw kan enfiah thin. Force-fitting a awm lo.
Engvangin Nge "Cheap" 8.8 Bolts A Hlawhchham (Kan Bolt A Fail Loh)
Kan hmu fo thin: supplier pakhat chuan low-grade scrap steel a hmang a, Grade 8.8 thlenga heat-treat a tum thin.
The Result: Bolt hian a tir lamah hardness test a paltlang thei a, mahse core structure erawh a chak lo thung. Tension hnuaiah chuan a inzawm khawm a, a snap bawk.
Kan Thutiam: Virgin steel wire rod (SWRCH/10B21) kan hmang thin. A chhunga grain structure chu a tight a, a inmil bawk.
Vawiin hian Quote la rawh
I structural integrity nen hian gamble suh. Fasteners hre chiang tak factory atangin quote la rawh.
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