Import 316 Full Threaded Stud Bolt — Buy in Bulk from Supplier in China

The 316 Full Threaded Stud Bolt from Zhengzhou Huitong Pipe Fittings is a continuous-thread fastener manufactured from AISI 316 austenitic stainless steel, with threading extending from end to end without an unthreaded shank section. This construction differs from double-end studs or bolts with reduced shanks, and is selected where the full fastener length must engage with nuts or tapped components on both sides of a flange or joint. The source description indicates diameter availability from M6 to M64, covering the typical range for process industry bolting though buyers must confirm thread pitch (coarse or fine) and exact length availability for their pressure class requirements. The 316 grade provides the standard molybdenum-bearing composition for chloride-exposed applications, with typical material certification to ASTM A193 Grade B8M or ASTM F593.

Thread form for metric studs in this product category is typically ISO metric coarse (M profile) as standard, with ISO metric fine (MF) available for vibration resistance or thin-wall components. The full thread configuration allows the stud to be cut to shorter lengths in the field, though this practice requires thread deburring and may invalidate manufacturer's certification. Surface finish is typically plain (self-colour) with passivation, though suppliers may offer PTFE coating or molybdenum disulphide lubrication for galling prevention in stainless-steel-on-stainless-steel assemblies. Mechanical properties for 316 studs in the ASTM A193 B8M specification yield minimum 205 MPa tensile strength at room temperature with Class 1 condition, though Class 2 with strain hardening offers higher strength at some reduction in corrosion resistance. The source description references DIN 835 for double-end studs, which is not directly applicable to full threaded studs; buyers should verify which dimensional standard governs this product.

Primary applications include petrochemical flange bolting, marine exhaust systems, desalination plant pipework, and pharmaceutical process equipment where 316 corrosion resistance is specified. The full thread form is particularly suited to through-bolted applications with space constraints where a bolt head cannot be accommodated on one side. Zhengzhou Huitong's location in Henan Province places it within China's central manufacturing belt with rail and road connectivity to Shanghai or Tianjin ports for export shipment. The source description notes export experience to Germany, the United States, Saudi Arabia, and South Korea, suggesting familiarity with ASME, DIN, and JIS standard requirements, though no specific project references or end-user approvals are provided.

Zhengzhou Huitong Pipe Fittings is located at Room 2004, Expo Center, Dongfeng Road, Zhengzhou 450000, Henan Province, China. The supplier holds a 'harbor' trust tier and 'imported' supplier tier classification, with a zero percent response rate and zero recorded average response hours. This absence of response data means buyers cannot rely on platform-tracked communication metrics and must establish direct contact to assess responsiveness and technical English capability for engineering queries.

The company's product range extends beyond 316 stud bolts to encompass comprehensive fastener lines in stainless steel, duplex stainless steel, nickel alloys, and exotic grades including Monel, Inconel, Incoloy, and Hastelloy families. The source description lists export destinations including the United States, Germany, Saudi Arabia, and South Korea, and references multiple national standards (DIN, ISO, JIS, ANSI/ASME, BS). No information is provided about manufacturing facility location, forging or threading equipment, heat treatment capability, in-house testing laboratory, number of employees, annual turnover, or specific industry certifications such as ISO 9001 or PED. Buyers should request facility audit information and current quality system documentation.