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Material: Premium alloy steel stud bolts with PTFE (polytetrafluoroethylene) coating, available in ASTM A193 B7, B7M, A320 L7/L7M and DIN 976, with A194 2H heavy hex nuts.
Corrosion protection: Fluoropolymer (PTFE/Xylan) coating provides excellent anti-corrosion, anti-galling and chemical resistance, ideal for offshore, marine and chemical processing environments.
Precision threads: Threads rolled after heat treatment for accurate fit, smooth assembly and reliable flange sealing.
Applications: Widely used in flanged connections, valves, pumps, heat exchangers and pressure vessels for oil & gas, petrochemical, power generation and water treatment industries.
Customization: Coating color (e.g., blue Xylan 1424), sizes, markings and packaging (plywood cases, pallets) are customizable; OEM and mixed-size orders welcome.
Quality: Mill test certificates and material reports available on request; we are a professional fastener manufacturer with rich export experience.
We supply premium alloy steel stud bolts complying with ASTM A193 B7, B7M, A320 L7/L7M, and DIN 976, paired with A194 2H heavy hex nuts. Other international standards like GB, EN, and BS can also be manufactured.
PTFE coatings deliver superior anti-corrosion, chemical resistance, low friction, and anti-galling properties, making them ideal for high-stress offshore marine and chemical processing environments.
Yes. Coating colors (such as blue Xylan 1424), bolt sizes, custom head markings, and packaging types (plywood cases, pallets) are fully customizable based on project requirements. Mixed-size orders are supported.
Yes. Mill test certificates (MTC), chemical analysis, and mechanical test reports are available upon request with shipments. Our facilities are certified under ISO 9001, ISO 14001, and ISO 45001.
These fasteners are widely applied across oil & gas, petrochemical, offshore marine, power generation, heat exchangers, pressure vessels, and water treatment equipment.
