Fujian Honglun Steel Industry Group Co., Ltd. is a professional manufacturer and supplier specializing in high-quality stainless steel seamless pipes. Located in Songyang, China, we are committed to providing reliable stainless steel solutions for global industries with advanced production facilities, strict quality control systems, and extensive manufacturing experience.
Our stainless steel seamless pipes are produced through advanced hot working and cold drawing processes, ensuring excellent mechanical properties, dimensional accuracy, high-temperature stability, and outstanding corrosion resistance. The products are manufactured in accordance with international standards including ASTM, ASME, EN, JIS, and GB requirements.
We supply a wide range of stainless steel seamless pipes in various grades, including 304, 304L, 316L, 321, 347, 309, and 310 stainless steels. Available in different diameters, wall thicknesses, and customized lengths, our seamless pipes are widely used in demanding industries such as petrochemical, oil & gas, power generation, chemical processing, heat exchangers, food processing, and other applications requiring high strength and corrosion resistance.
With years of expertise in stainless steel manufacturing, Honglun Steel Group has established a complete production system covering piercing, cold drawing, heat treatment, straightening, pickling, and non-destructive testing processes. We focus on delivering consistent product quality and professional stainless steel solutions to customers worldwide.
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Item | Specification |
Product Standard | ASTM A312, ASTM A213, ASTM A269, ASTM A789, ASTM A790, ASME SA312, ASME SA213, ASME SA269, ASME SA789, ASME SA790, and other international standards |
Outer Diameter Range | 1/8 inch – 32 inch |
Wall Thickness | Sch 5S – Sch 160S |
Length | Up to 36 meters |
Material Grades | TP304/L/H, TP309/S/H, TP310/S, TP316/L/H, TP316Ti, TP317/L, TP321/H, TP347/H, TP405, TP409, TP410S, TP430, TP439, TP441, TP904L, Duplex Stainless Steel (S31803, S32205, S32750, S32760), Nickel Alloys (N08825, N08826, N06625, N06690, N08020, N08800, N08810, N08811, N10276, N06022), Titanium (TA1, TA2, TA9), etc. |
Product Shape | Round, Square, U-Shaped, Rectangular, and Spiral |
End Treatment | Plain End, Beveled End, Threaded End (as required) |
Oil and gas industry
Chemical and petrochemical industry
Food and pharmaceutical industry
Paper and sugar industry
Automotive and transportation equipment industry
EN 10204 3.1 and EN 10204 3.2 Material Test Certificates (MTC)
Raw Materials Certificate
100% PMI
Heat Treatment Charts
Third-Party Inspection Report
Surface roughness and size measurement
Manufacturer Test Certificate (Impact Testing, Flattening, Flare, Bend, Hardness, Intergranular, Pitting Corrosion, Grain size, ET, UT, HT)
Laboratory Test Certificate from the Government-Approved Lab