Import Bolts — Buy in Bulk from Supplier in China

Dayang Fastener Factory manufactures industrial-grade bolts from its facility in Haiyan, Zhejiang Province, China, a region with established fastener production infrastructure. The product range spans multiple dimensions and thread types, though specific diameter and length ranges are not numerically stated in the source. Materials are described as high-strength steel and corrosion-resistant materials, which in fastener terminology typically encompasses low-alloy carbon steel, medium carbon steel quenched and tempered, or stainless grades such as A2-70 or A4-80. Buyers should request the exact steel grade designation, melt source, and heat treatment protocol to confirm suitability for their application.

The bolts are offered in galvanized and black oxide finishes. Hot-dip galvanizing per ASTM A153 or ISO 1461 provides thicker zinc coating (typically 40-85 μm) than electroplating and is standard for outdoor structural use, while black oxide per MIL-DTL-13924 offers only aesthetic and mild anti-galling properties. The listing references compliance with ASTM and ISO standards but does not cite specific bolt standards such as ASTM A325, A490, ISO 4014, or DIN 931. Thread types are mentioned as varied; this could include metric coarse, metric fine, UNC, or UNF, and must be confirmed before specification. Grade conformity to ASTM and ISO is claimed without stating the specific property class, a gap that requires direct supplier clarification.

Applications cited include construction, automotive, manufacturing, and machinery, sectors where bolt failure can carry significant liability. Dayang Fastener Factory lists FOB and CIF shipping terms, L/C and T/T payment methods, and flexible minimum order quantities. No port, lead time, or exact MOQ is provided. Haiyan's proximity to Ningbo and Shanghai ports offers logistical advantage for sea freight, though buyers must confirm which port and inland freight arrangement applies. For automotive or structural use, buyers should insist on PPAP-level documentation or equivalent material certification, which is not mentioned in the source profile.

Dayang Fastener Factory is located at No.6, Changqing Road, Ganpu, Haiyan, 314032, Zhejiang Province, China. The supplier holds a 'harbor' trust tier with a response rate of 0.00% and zero recorded average response hours. This profile indicates limited or no recent platform-mediated engagement, so buyers should conduct independent verification of factory existence, production capability, and export experience. The Haiyan location places the supplier within China's fastener manufacturing belt, though this regional reputation alone does not guarantee individual supplier performance.

The source description presents Dayang Fastener Factory as offering industrial bolts with flexible MOQ, FOB and CIF shipping, and L/C or T/T payment. No production capacity, factory size, years in operation, quality management certification, or client list is provided. Buyers should request a business licence, export registration, and any ISO 9001 or IATF 16949 certificates claimed. The absence of response data means initial inquiries may go unanswered; consider using a local agent or trading company to facilitate communication and factory verification before committing to a direct order.