Established in 2003, Shaanxi Kerlimar Engineers Co., Ltd. has stood at the forefront of the international piping industry for over two decades. We specialize in the procurement and manufacturing of diverse piping solutions, including carbon steel, alloy steel, and premium stainless steel materials.
Our technical capabilities span across seamless pipes, straight seam welded pipes, and spiral welded pipes, meticulously engineered to meet international benchmarks such as ASTM, ASME, EN, and JIS. By bridging the gap between rigorous engineering standards and global market demands, we ensure high-quality delivery, competitive pricing, and impeccable service.
An Analysis of Metallurgy, Pressure Ratings, and Global Industry Standardizations
1.5-inch stainless steel pipes are primarily manufactured using TP304/304L and TP316/316L grades. Grade 304 offers exceptional formability and weldability, whereas Grade 316 provides superior resistance to chlorides and acidic environments, essential for maritime and pharmaceutical applications.
The Nominal Pipe Size (NPS) of 1.5 inches corresponds to an outside diameter (OD) of 1.900 inches (48.3 mm). Whether utilizing Schedule 10S for lightweight applications or Schedule 80S for high-pressure systems, precision in wall thickness is non-negotiable for system integrity.
Our production lines strictly adhere to ASTM A312 (Seamless and Welded Austenitic Stainless Steel Pipe) and ASTM A213. This ensures that every 1.5-inch pipe can withstand specified tensile strengths and yield stresses under extreme thermal conditions.
In modern fluid dynamics, the 1.5-inch diameter is considered the "Golden Ratio" for mid-sized industrial flow systems. It offers a perfect balance between flow velocity and friction loss. High-quality 1.5-inch stainless steel pipes are critical in semiconductor fabrication (gas delivery), food and beverage processing (sanitary lines), and chemical dosing systems. Unlike larger diameter pipes, the 1.5-inch variant requires specialized TIG welding techniques to prevent "sugar" or oxidation on the internal bead, a standard that Kerlimar masters through automated orbital welding technology.
The global stainless steel pipe industry is undergoing a paradigm shift towards decarbonization. Market leaders are now evaluated not just on tensile strength, but on their Carbon Footprint per Tonne. Kerlimar's commitment to this is evidenced by our chairman, Mr. Ming SUN, an environmentalist who has integrated eco-friendly practices into our supply chain.
Since 2019, responding to global innovation mandates, Kerlimar launched clean energy R&D, focusing on New Vertical Axis Wind Power Technology. This initiative aims to solve wind power bottlenecks through breakthrough designs in suspension, grid structures, rail maglev, and floating land/sea platforms.
Our achievements include:
Currently, our 10KW-500KW series of small units are paving the way for rural revitalization and the societal "Double Carbon" goals, contributing to the global target of limiting temperature rise below 1.5°C.
Future 1.5" piping systems will integrate IoT sensors to monitor corrosion rates and flow pressure in real-time. Kerlimar is researching "Smart Fittings" that communicate structural health data directly to plant managers.
For the semiconductor industry, we are enhancing our surface treatment technology to achieve Ra values < 0.25µm, ensuring zero contamination for ultra-pure water (UPW) systems.
Developing specialized austenitic grades that prevent hydrogen embrittlement, a crucial step for the upcoming global hydrogen economy. Our 1.5-inch seamless pipes are undergoing rigorous testing for high-pressure H2 storage.
Kerlimar
