Steel and Metal
Strip,Sheet,Tube,Coil,Pipe Fittings
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30 Days



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Within 24 hours




Hunan Allianz Metal Products Co..Ltd was established in 1996. RONSCO is a reistered trademark in 2014. Hunan Allianz is a subsidiary company of Allianz Steel Group specializing in the production of stainless steel pipe fittings, stainless steel coil in stock, stainless steel processing, and sales of stainless steel products to customers domestic and overseas. 

We have an international marketing department in Hunan Province, the central southen area of China, and a branch office in Wuxi City. The company is strictly under the lSO 9001 quality management svstem for on-site managementwith ISO 9001, CE, AAAAA credit rating certification, etc, Products received inspection and approval of third parties like SGS, BV, LRTUV, Intertek and other international authority of the third partyinspection and approval.


Ronsco provide common and customized stainless steel and nickel alloy pipe, pipe fittings, plate, coil, strip, bar, profiles which are widely used for industries of petroleum, chemical engineering, nuclear power, marine vessel metallurgy, sewage disposal, aviation and aerospace etc.


Manufacturing Excellence

Ronsco mainly produce common and customized stainless steel and nickel alloy pipe, pipe fittings, plate, coil, bar, profiles. We have advanced production equipment and technological process, always seeking for perfection is our survival base.

Quality Control

We assure to deliver furnish superior quality products with consistency at economical price. Ronsco has obtained ISO9001 quality system certification etc. , and strictly in accordance with norms for developing work plans and quality objectives.

Authority Testing

To certify the quality of your product we can carry out destructive and non-destructive tests. Testing is carried to customer requirements and specifications, in accordance with respective ASTM/ASME standards and international specifications.

Value-added Services

Many of our products are subject to processed further before they are used. In order to relieve you from this extra handling, we offer a wide variety of material processing services such as forging etc. This process reduce time and cost in the supply chain.


With rich experience in export metal products, Ronsco is more than a stainless steel manufacturer. We are a partner you can trust for our safety and reliability.

Quality: All our manufacturers have quality system certificates (ISO) to ensure the quality of products. There are also testing equipment for- ultrasonic, eddy current, hydro, PT, X-ray, tensile test...

QC team: Under the premise of factory quality assurance, we have a professional QC team with well-trained knowledge. We can ensure the products are 100% inspected before delivery. If necessary, we can accept the third party inspect.

One-stop service of stainless steel material: We can supply seven categories of main products, covering stainless steel / duplex steel / nickel alloy pipe, fittings, plate, coil, strip, bar, profiles...

Target Markets

Russia, United States, Saudi Arabia, India, Pakistan, Indonesia, Thailand, UK, Braizil and more.


Port machinery, engineering machinery, vessel, national key projects, wind power, cement machinery.

petrochemical, metallurgy, electricity. mining etc.