High-strength Bolts: Qhov twg thiab thaum twg siv lawv 

Steel Qauv & Kev Tsim Kho

Kev tsim kho kev lag luam yog cov neeg siv khoom loj tshaj plaws ntawm cov bolts muaj zog. Kev sib txuas ntawm cov ntsia liaj qhov rooj hloov cov tsoos welding nyob rau hauv kab-rau-kem pob qij txha, muab kev txhim kho sai dua, kev tshuaj xyuas yooj yim dua, thiab kev tiv thaiv ntau dua rau seismic loads.

• Hex bolts (Qib 8.8 / 10.9) - siv nyob rau hauv kev sib txuas ntawm lub sijhawm tiv thaiv, lub hauv paus phaj thauj tog rau nkoj, thiab cov phaj splice
• Thauj tog rau nkoj bolts - embedded nyob rau hauv lub hauv paus pob zeb kom ruaj ntseg steel kem
• Hnyav hex bolts nrog txiv ntseej - tus qauv rau AISC thiab EN 1090-raws li kev sib txuas steel ncej

PRO TIP  Rau kev sib txuas tseem ceeb, ib txwm siv ASTM A325 lossis A490 bolts nrog cov tshuab ntxhua khaub ncaws tawv thiab calibrated torque wrenches.

Choj & Civil Infrastructure

Kev tsim kho choj xav tau cov fasteners uas tuaj yeem tiv taus cov khoom nyob hauv lub neej, thermal expansion, thiab xyoo caum ntawm ib puag ncig raug. High-strength structural bolts tau teev nyob rau hauv thoob ntiaj teb choj codes xws li AASHTO, Eurocode 3, thiab GB / T qauv.

• Flange bolts - txuas steel girder seem ntawm tus choj txuas
• Stud bolts nrog ceev - ruaj ntseg expansion pob qij txha thiab bearing phaj sib dhos
• Dacromet-coated hex bolts - teev rau cov ntug dej hiav txwv thiab sab ntug dej hiav txwv cov qauv los tiv thaiv corrosion

Cua zog & lub zog tsim

Cua turbine towers tau sib sau ua ke siv qhov loj-inch siab-lub zog flange bolts - feem ntau Qib 10.9 lossis 12.9 - raug rau lub voj voog qaug zog thoob plaws hauv lawv lub neej kev pabcuam 25 xyoo. Bolt preload raug yog qhov tseem ceeb; undertightened bolts ua rau pej thuam qaug zog tsis ua hauj lwm, thaum overtightened bolts pheej hmoo yielding.

• Ntauwd flange bolts (M36–M72, Qib 10.9) - qhov xav tau tshaj plaws siv lub zog siab bolts hauv kev siv hluav taws xob txuas ntxiv
• Foundation thauj tog rau nkoj bolts - txuas tus pej thuam hauv paus mus rau lub hauv paus pob zeb
• Nacelle thiab rotor hub bolts - kev sib txuas hauv cov qauv nrog nruj torque yuav tsum

COATING NCOO  Zinc-flake / Luxubao-coated bolts yog nyiam rau kev siv cua ntauwd - lawv muab kev tiv thaiv corrosion zoo tshaj thiab tsis muaj hydrogen-embrittlement.

Heavy Machinery & Cov Khoom Siv Muaj

Presses, crushers, mining khoom, thiab industrial gearboxes tsim huab dynamic loads uas yuav tsum tau precision high-strength fasteners. Bolt loosening nyob rau hauv rotating machinery tuaj yeem ua rau muaj kev puas tsuaj loj thiab kev poob qis.

• Lub qhov (socket head cap screws) (Qib 12.9) - siv nyob rau hauv qhov chaw kaw qhov twg tus qauv hex nkag tsis tau
• Flange bolts - muab nws tus kheej-center thiab tiv thaiv lateral shear rog nyob rau hauv machinery mounts
• Teem screws thiab grub screws - ruaj ntseg rotating Cheebtsam rau shafts tsis projecting taub hau

Roj, Roj & Petrochemical

Pipeline flange kev sib txuas thiab lub nkoj siab npog hauv kev lag luam roj thiab roj ua haujlwm nyob rau hauv kev kub siab, huab cua kub, thiab corrosive media. Fasteners nyob rau hauv cov cheeb tsam no yuav tsum tau raws li ASME B16.5 thiab ASTM A193 / A194 tus qauv.

• ASTM A193 B7 stud bolts (Cr-Mo alloy steel) - tus qauv kev lag luam rau kev kub siab flange
• 2H hnyav hex ceev (ASTM A194) - ua ke nrog B7 studs rau siab-rated flanges
• Incoloy / super-alloy bolts - teev rau cov kev pabcuam zoo heev lossis kev pabcuam cryogenic

Corrosion tiv thaiv rau High-Strength Bolts

Corrosion yog qhov ua rau ua rau ntxov ntxov fastener tsis ua haujlwm nyob rau sab nraum zoov thiab chaw ua haujlwm. Xaiv qhov kev kho saum npoo zoo yog qhov tseem ceeb - tshwj xeeb tshaj yog rau cov bolts muaj zog qhov twg hydrogen embrittlement los ntawm electroplating yog qhov txaus ntshai tshaj qib 10.9.

• Dacromet txheej - dej-raws li, tsis muaj chromate, 480-1000+ h ntsev-txhaj tshuaj tiv thaiv; nyab xeeb rau Qib 10.9 / 12.9 bolts
• Luxubao (zinc-flake) txheej - zoo ib yam li Geomet / Delta-Tone; zoo heev rau cua zog thiab hnyav kev tsim kho
• Kub-dip galvanizing - haum rau Qib 8.8 thiab hauv qab; tsis pom zoo saum Qib 10.9 vim muaj kev pheej hmoo hydrogen
• Zinc electroplating - kev xaiv kev lag luam rau sab hauv tsev lossis qhov chaw raug qis
• Stainless hlau (A2-70 / A4-80) - inherently corrosion-resistant; tsis muaj txheej txheej ntxiv

Vim li cas thiaj xaiv FUJINRUI High-Strength Fasteners?

• Tsim los rau ISO 898-1, ASTM A325 / A490, thiab DIN 931/933 tus qauv
• Tag nrho cov txheej txheem: Dacromet, Ruspert, zinc-plated, kub-dip galvanized, phosphate
• Qhov ntau thiab tsawg los ntawm M6 txog M64, qib 8.8 / 10.9 / 12.9
• Cov ntawv pov thawj thib peb cov neeg kho tshuab kuaj muaj (tensile, hardness, ntsev-txhaj tshuaj)
• Cov nqi sib tw nrog lub sijhawm ua haujlwm ceev rau ntau OEM thiab qhov project xaj