NAl-LOK brand was established in Shanghai in 2000, we focus on the production, research and development, salesof instrumentation valves, fittings, hose & tubing.
Our strict control and mananemen of the enlire production process enables us to provide products that meet our customers reauirements for productsafety, functionality and design at competitive prices, while ensuring the shortest lead times in the market.
We have the world's advanced processingequipment, testing equipment, class 1000 grade clean room to ensure quality control and on time delivery.We strive to develop, serve global customers and provide stable and reliable products.
We have the capability to manufacture and supply 4 different product categories, including:
1.General Instrumentation Valves and Fittings
2.High Purity & Ultra High Purity Products- NAI-LOK UHP PRODUCTS
3.Hose & Tubing
4.Special Alloy Valves
Nickel Alloy Seamless Tube:
400Series:UNS N04400 nickel-copper alloy tube
600Series:UNS N06600,UNS N06601,UNS N06625
800Series:UNS N08800,UNS N08810,UNS N08811,UNS N08825
Pure Nickel Alloy Tube:UNS N02200,UNS N02201
UNS N10276,UNS N06022,UNS N06200,UNS N10665,UNS N10675
ASTM B622 HC276 HC22 H B2 H B3
High Temperature Alloy:GH3030,GH3039
Other type Alloy:UNS N08020,UNS N0802
S32205 S32750 S31254 6 Mo 6-Moly Molybdenum
Super Austenite 904L N08904
High-Quality Stainless Steel Compression x Male Thread Fittings - Trusted for Over 20 Years
For over two decades, NAI-LOK has been a leading manufacturer of premium stainless steel compression x male threaded fittings, designed for durability, leak-proof performance, and corrosion resistance. Our 316 stainless steel adapters ensure long-lasting reliability in high-pressure, high-temperature, and harsh industrial environments.



