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Over 20 years of excellence in manufacturing and exporting high-quality flanges, fittings, valves, and pipes for the global oil, gas, chemical, and power industries. Trusted by engineers and procurement teams worldwide.
Overwell(Jinan) Piping Materials Manufacturing Co., Ltd. is a private-owned company and a professional manufacturer & exporter of pipe materials including flanges, fittings, valves, and pipes, serving chemical, oil, gas, and power companies all over the world.
With over 20 years of experience in exporting, we have established a strong market presence globally. Our international sales agents provide continuous feedback on consumer needs, helping us maintain a sound reputation in the piping industry.
Our excellence stems from a strict system of quality control and inspection throughout the manufacturing processes, including physical and chemical analysis. We adhere to international standards such as 97/23/EC, AD2000-Merkblatt W0/TRD100.
Precision forging and casting at our Jinan, China facilities
High-performance piping components engineered for reliability, durability, and global compliance.
Available in various pressure ratings (Class 150 to 2500), materials (carbon steel, stainless steel, alloy), and standards (ASME, DIN, JIS). Ideal for high-pressure and high-temperature applications.
Elbows, tees, reducers, and caps in seamless and welded forms. Manufactured to ASME B16.9 standards with precise dimensional control and full material traceability.
Socket weld and threaded fittings in 90° elbows, tees, couplings, unions, and caps. Made from high-strength forged materials for critical service applications.
Hex, square, and close nipples in carbon steel, stainless steel, and alloy materials. Available in various lengths and thread types (NPT, BSPT, BSP).
Threaded connections for ease of installation in low-pressure systems. Compliant with ASME B16.11 standards and available in multiple sizes and finishes.
Corrosion-resistant flanges in 304, 316, 321, and duplex grades. Suitable for marine, chemical, and food processing environments.
High-temperature and high-pressure resistant fittings in chrome-moly, nickel alloys, and other specialty materials for power and petrochemical plants.
OEM and ODM services available. We support custom drawings, non-standard sizes, and special material requirements with full documentation and certification.
Complete flange kits including spiral wound gaskets, RTJ, full-face gaskets, and high-tensile bolting sets for leak-free joints.
Complementary valve solutions in forged and cast bodies, suitable for on/off and control applications in industrial piping systems.
Extensive inventory in China and Germany. Fast global shipping and one-stop shopping for mixed specifications and quantities.
Full material test reports (MTR), third-party inspection (SGS, BV), and compliance with PED 97/23/EC, AD2000, and ISO 9001 standards.
Engineered for performance, backed by decades of expertise.
Manufacturing in strict compliance with 97/23/EC (PED), AD2000-Merkblatt W0/TRD100, ASME, and ISO standards. Full traceability and certification.
Dual manufacturing bases in Jinan, China and a sales & distribution hub in Leipzig, Germany. Fast delivery to Europe, Americas, Asia, and Africa.
Extensive stock of flanges, fittings, valves, and accessories in assorted materials and sizes. Mix and match for complete project fulfillment.
We manufacture in carbon steel (A105, A350 LF2), stainless steel (304, 316, 321, 347, duplex), alloy steel (F5, F11, F22), and nickel alloys (Inconel, Monel).
Yes, all products come with full Material Test Reports (MTRs) per EN 10204 3.1 or 3.2. Third-party inspection (SGS, BV) is available upon request.
Absolutely. We support OEM/ODM projects with custom drawings, special dimensions, and unique material requirements.
We serve clients across Europe, North America, the Middle East, Southeast Asia, and Africa through our direct and agent network.
Standard items: 2–4 weeks. Custom orders: 6–8 weeks. Urgent deliveries can be arranged based on stock availability.
We're available 24/7 to assist with quotes, technical questions, and order support.
Company: Overwell(Jinan) Piping Materials Manufacturing Co., Ltd.
Tel: 0086-531-88870001
Tel: 0086-531-82689072
Fax: 0086-531-82689071
Email: [email protected]
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