At FNS Pipeline, we deliver reliable inspection and testing services to ensure the highest quality and performance of your overlay welded products. Our experienced inspection team specializes in comprehensive testing methods, including: Inspection and Testing-Penetrant Testing(PT) on Cladded Flange for Surface Defect Detection Positive Material Identification (PMI) — Verifying material composition to guarantee compliance with project specifications. Ultrasonic Testing (UT) — Detecting internal defects and ensuring weld integrity through advanced ultrasonic techniques. Penetrant Testing (PT) — Surface defect detection for welds and overlay layers to prevent failure in service. Weld Overlay Thickness Measurement — Accurate measurement of cladding layer thickness to meet design and quality standards. Ferrite Content Testing — Controlling ferrite levels in stainless steel overlays for optimal corrosion and crack resistance. Dimensional Inspection — Verifying critical dimensions of components to ensure precise fit and function. We combine advanced inspection technology with strict quality control protocols to guarantee your components meet industry standards and customer requirements. FNS — Your Trusted Partner in Overlay Welding Inspection and Quality Assurance.

20,000 square meters of dedicated cladding workshop. Strict area-based management to prevent mixing of non-conforming products.

Over 100 cladding machines, all using Fronius welding power sources. Stable and reliable welding parameters throughout the process.

From raw materials, to production, to packaging, to warehousing each process of strict sampling.

Certified IWE International Welding Engineers and CWI Welding Inspectors. ASNT/ISO 9712-certified NDT personnel. Welders certified by DNV GL, BV, and other certification bodies.

We are committed to providing customers with overall overlay cladding solutions through professional material technology, automatic equipment technology and advanced process application technology. Overlay cladding is a surface engineering process that deposits a corrosion-resistant, wear-resistant, or high-temperature-resistant alloy onto a substrate, typically carbon steel or low-alloy steel. This method combines the structural strength of the base material with the enhanced properties of the cladding material. Here’s a comprehensive overview of overlay cladding processing service solutions: FNS Application References 1. Material Selection Base Material: Commonly used base materials include: Carbon Steel (e.g., ASTM A105, A36) Low-Alloy Steel (e.g., ASTM A216, A217) Stainless Steel (e.g., 304, 316) Cladding Material: Depending on the application, various alloys can be used: Corrosion-Resistant Alloys: Alloy 625 (NiCrMo-3) Alloy 825 (Incoloy 825) Alloy 600 (Inconel 600) 316L Stainless Steel Wear-Resistant Alloys: Hardfacing Alloys (e.g., Stellite, Colmonoy) Tungsten Carbide (WC) High-Temperature Alloys: Alloy 617 (Inconel 617) Alloy 718 (Inconel 718) 2. Surface Preparation Cleaning: Degreasing and grit-blasting to remove oxides, scale, and contaminants. Preheating: Heating the base material to a specified temperature (e.g., 150–200°C) to reduce thermal stress and improve bonding. 3. Cladding Techniques Gas Tungsten Arc Welding (GTAW): Precise control, suitable fo [...]

When you place an order with us, Our Quality Assurance team closely monitors the production process and checks your orders to ensure high quality. If any issues do come up, we will prioritise finding a solution for you Your satisfaction is our top priority. Quality Control

Thank you for your interest in FNS (Nanjing) Surface Engineering Technology Co., Ltd. We are dedicated to providing high-quality surfacing solutions and one-on-one support to meet your specific needs. Below is an overview of our services and how to get in touch with us for more information. FNS (Nanjing) Surface Engineering Technology Co., Ltd. About FNS (Nanjing) Surface Engineering Technology Co., Ltd. FNS specializes in advanced surface engineering technologies, including overlay cladding, thermal spray, laser cladding, and other surface treatment processes. Our expertise spans a wide range of industries, including oil and gas, power generation, chemical processing, and mining. We are committed to delivering reliable, cost-effective, and high-performance solutions tailored to your requirements. One-on-One Service Offerings 1. Customized Solutions: Material Selection: Expert advice on choosing the right base and cladding materials for your application. Process Design: Tailored cladding and surface treatment processes to meet your specific needs. Technical Support: Comprehensive support from initial consultation to final product delivery. 2. Advanced Cladding Techniques: Weld Overlay Cladding: GTAW, SMAW, SAW, PTA, and laser cladding. Thermal Spray: HVOF, plasma spray, and wire arc spray. Laser Cladding: High-precision, low-dilution cladding for critical components. COMPACT CLADDING CELL(CCC) 3. Quality Assurance: Non-Destructive Testing (NDT): UT, PT, RT, and MT. Mech [...]