Manufacturing Excellence

Suzhou Fulida (FLD) — 20+ years manufacturing precision high-strength fasteners for global pressure equipment, valve and industrial applications.

Our Journey: 2005 – 2026

05
2005Suzhou Fulida (FLD) founded — cold heading and hot forging production line commissioned.
09
2009ISO 9001:2008 quality management certification obtained. Export programme launched.
13
2013IATF 16949 automotive quality certification achieved. Sinopec qualified supplier status.
17
2017CNC precision machining centre expanded. ±0.01 mm tolerance capability established.
21
2021Automated optical screening line installed — 100% visual inspection for all stud bolt products.
26
2026PED 2014/68/EU certification (No. MUE-008-002-2026) from C&P srl, Italy. LOKRON brand launched globally.

Factory & Production Floor

LOKRON / FLD Factory Exterior — Suzhou

Factory Exterior — Suzhou Industrial Zone

FLD Manufacturing Floor

Production Floor — Hot Forging & Assembly

CNC Precision Machining

CNC Turning Centre — ±0.01 mm Precision

Precision Lathe Equipment

Precision Lathe — Thread Forming

Latest Certification — Active

PED 2014/68/EU — Quality System Approval

Certificate No. MUE-008-002-2026 · Issued by C&P srl (Italy) · Valid: 2026-02-09 → 2029-02-08

Scope: ASTM A193/A193M (B7, B7M, B16, B8, B8M) · ASTM A320/A320M (B8, B8M, L7, L7M) · ASTM A194/A194M (2H, 2HM, 7, 7M, 8, 8M)

🏅 PED Certified
to Feb 2029

Certifications & Compliance

PED 2014/68/EU
Pressure Equipment Directive — Valid to 2029
ISO 9001:2015
Quality Management System
IATF 16949
Automotive Quality Management
Sinopec Supplier
Qualified Heavy Industry Partner

Advanced Equipment

  • Cold Heading MachinesM6 - M14
  • Hot (Red) HeadingM8 - M36
  • CNC Lathes & Grinding±0.01mm Precision
  • Heat Treatment LinesIn-house Control
  • Automated Optical Screening100% Quality Goal

Covered Material Grades (PED Scope)

ASTM A193 / ASME SA193
Alloy & stainless stud bolts for high-temperature pressure equipment
  • ›B7 — Cr-Mo Alloy (high-temp)
  • ›B7M — Cr-Mo Alloy (sour service)
  • ›B16 — Cr-Mo-V (≤540°C)
  • ›B8 — AISI 304 Stainless
  • ›B8M — AISI 316 Stainless
ASTM A320 / ASME SA320
Low-temperature service stud bolts for sub-zero applications
  • ›L7 — Cr-Mo (low-temp)
  • ›L7M — Cr-Mo (sour service)
  • ›B8 — AISI 304 (cryogenic)
  • ›B8M — AISI 316 (cryogenic)
ASTM A194
Heavy hex nuts for high-pressure flanged connections
  • ›2H — Carbon Steel (heavy hex)
  • ›2HM — Low-alloy (sour service)
  • ›7 — Cr-Mo Alloy (high-temp)
  • ›7M — Cr-Mo (sour service)
  • ›8 — AISI 304 Stainless
  • ›8M — AISI 316 Stainless

Quality Inspection Laboratory

Tensile & Hardness Testing

Tensile & Hardness Testing

Spectral & Metallographic Analysis

Spectral & Metallographic Analysis

Salt Spray & Plating Inspection

Salt Spray & Plating Inspection

Tensile Testing
Salt Spray Testing
Hardness Testing
Spectral Analysis
Projector Measurement
Metallographic Micro
Optical Sorting
Plating Thickness

Custom & Non-Standard Fastener Manufacturing

Beyond standard catalogue items, LOKRON's engineering team accepts fully custom OEM orders — from one-off prototypes to high-volume production runs.

⚙️

Special Dimensions

Oversized diameters beyond M76, extra-long thread lengths, reduced shank, double-end stud configurations. Any metric or UNC/UNF/BSPP thread.

🔩

Special Thread Forms

Acme, buttress, trapezoidal (Tr), left-hand thread, API round thread for wellhead and pipeline applications. Custom pitch and thread class on request.

🧪

Exotic & Alloy Materials

Inconel 625 / 718, Duplex 2205 / 2507 (super duplex), titanium Grade 5, Monel K-500, Hastelloy C-276 for extreme corrosion or cryogenic environments.

🎨

Surface Treatments

PTFE/Xylan, Molykote, hot-dip galvanising, zinc-nickel electroplating, Dacromet, fluoropolymer coating, black phosphate. Custom K-factor specification available.

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Special Head & Geometry

Flange bolts, T-head bolts, J-bolts, U-bolts, eye bolts, heavy flange nuts, weld nuts, slotted/castellated nuts, and custom flange dimensions to drawing.

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OEM Documentation Package

Full traceability: 3.1 mill certificates per EN 10204, NACE MR0175 compliance, PED declaration of conformity, PMI (positive material identification) reports, and customer-specific test plans.

Have a Drawing or Specification?

Send us your engineering drawing, material spec, or simply describe the application. Our technical team responds within 24 hours with feasibility, lead time and pricing.

Submit Custom Enquiry
Request Technical Consultation