Power transmission projects can require large quantities of matched bolts, nuts and washers with controlled strength, dimensions and corrosion protection. YONGYI reviews each tower, substation, support or foundation fastener requirement against the buyer’s technical documents before quotation.
Selected project references
The following project names are selected fastener supply references recorded in YONGYI company materials:
- Wuhan–Nanchang 1000 kV UHV AC project
- Zhangbei–Shengli 1000 kV UHV AC project
- Sichuan–Chongqing 1000 kV UHV AC project
- Fujian North-to-South 1000 kV UHV AC project
- Qinghai–Henan ±800 kV UHV DC project
- Baihetan–Zhejiang ±800 kV UHV DC project
Fastener requirements reviewed for this application
Transmission-project fasteners are reviewed as complete assemblies rather than isolated catalogue items. Important inputs include:
- Tower bolt, structural bolt, foundation bolt, threaded rod, nut and washer schedules
- Specified property class, material and compatible nut or washer requirements
- Coating system and any coating-thickness or corrosion-test requirement
- Dimensions, tolerances, thread fit, marking and batch traceability
- Mechanical, dimensional, coating and packing documents required before shipment
How YONGYI supports project inquiries
YONGYI reviews the purchase list, drawing or applicable standard before confirming the product configuration. Production, inspection, packing and shipment documents are then aligned with the accepted quotation and order requirements.
For a project quotation, send the fastener type, standard or drawing, dimensions, grade, surface finish, quantity, required documents and destination to sales@yyfasteners.com. You can also review our production and inspection facilities and management system certificates.
