Pursuit of Excellence

23+

Years Of
Experience
About Us

Deep in Oil & Gas Fasteners, Compliant with ISO/API/ASME

Lishui Jingyi Valve Co., Ltd., also known as Jingyi Fasteners, is a professional company specializing in standard fastener products for the oil and gas industry. The company’s core business is focused on fasteners, including stud bolts, bolts, nuts, and washers for oil and gas applications.

Certifications:

- ISO Quality Management System Certification
- API 20E – Carbon and Alloy Steel Bolting
- API 20F – Corrosion Resistant Alloy and Stainless Steel Bolting
- 6000 Hours Salt Spray Test Certification
More About Us
Core Highlights

Product core features

Valve assemblies for oil & gas transmission ensure long-distance transportation of oil, gas, and petrochemical fluids, adapting to high‑pressure, high‑temperature, and corrosive pipeline environments, complying with multiple national and international petrochemical standards, and delivering reliable sealing, low torque operation, and a long service life in energy infrastructure.
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Valve Aseembly

Precision fastener components, safeguard the safe long-distance transportation of oil and gas pipelines.
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Oil & Gas

Withstand high pressure and corrosion, fortify the fastening line for oil and gas exploration.
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Refinery & Petrochemical

Compliant with multiple national & international standards, secure every critical connection of petrochemical plants.
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Offshore & Marine

Resistant to high salinity and severe corrosion, provide long-term fastening assurance for offshore installations.
Products We Offer
JingYi Products
Our materials

Implement Int'l Standards & Project Specs

  • Carbon & Alloy Steels
    AISI 4140 / 42CrMo、 AISI 4135 / 35CrMo、 AISI 4340、 40CrMoV / 6140、 Low-carbon boron steels
  • Stainless Steels
    AISI 304 / 304L / 304LN、 AISI 316 / 316L / 316LN、 AISI 347 / 347H、 XM-19 (UNS S20910)、 Nitronic 60 (UNS S21800)
  • Duplex & Super Duplex Steels
    Duplex 2205 (UNS S31803 / S32205)、 Super Duplex 2507 (UNS S32750 / S32760)
  • Nickel-Based & Super Alloys
    Inconel® 625 (UNS N06625)、 Inconel® 718 (UNS N07718)、 Alloy 825 (UNS N08825)、 A286 / Grade 660
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