RYIN STAINLESS PIPE PRODUCT FACTORY is located in Dainan Town Science and Technology Park, a famous stainless-steel town in China, and 1 km from Dainan Exit of Ningyan Expressway, with convenient transportation.

RYIN STAINLESS PIPE PRODUCT FACTORY was established in 2005. It has become one of the leading manufacturers and exporters in the field of Stainless steel welded tubes and pipes products in China. Its leading products include Stainless Steel Welded Pipe,Stainless seamless pipes, Titanium alloy Welded Pipes,High nickel alloy Welded Pipe,Stainless steel clad welded pipes,Stainless  fittings,Stainless  flanges, Stainless steel light poles and various stainless-steel products with various specifications.

It has efficient management system, advanced technology, all necessary inspecting devices, stable quality and well-established distribution networks. Its products sell in Asia, Europe, USA, and South America. RYIN STAINLESS people believe quality is most important and service is based on promise. That helps RYIN STAINLESS to gain the trust of more and more customers and establish long term cooperation with them.


Our company covers an area of ​​35,000 square meters. There are more than 30 assistant engineers, special equipment welding engineers, non-destructive testing personnel of national second-level special equipment, professional technical consultants and engineering technicians.

Our company has invested 120 million  in supporting the introduction of German plasma gas protection automatic welding units, continuous automatic pipe welding units, large-scale CNC pressure forming machines, 14-meter dual-machine linkage bending machines, etc.


Producding large-caliber and thick-walled pipes are the leading position in the same industry in China. This technology can be used for internal and external polishing, pickling, sand blasting and heat treatment. The products are widely used in municipal construction, water treatment, papermaking, petrochemical, food and nuclear engineering industry.

RYIN STAINLESS can produce all kinds of stainless-steel products with full process according to the national standards of GB / T12771-2008, HG20537, ASTM, JIS ASME and other international standards according to customer needs.


Our Products

Main products

Stainless steel Wall Welded pipes
Titanium alloy steel Welded Pipes
High nickel alloy steel Welded Pipe
Copper alloy steel welded pipes
Stainless seamless pipes and tubes
Stainless clad welded pipes
Stainless steel fittings
Stainless steel flanges

Main services

Factory Audit
Pre-Production Inspection
During-Production Inspection
Final Random Inspection
Supervision of Loading
UT inspection.
PMI inspection

Stainless steel welded pipe product series:

Material Grade:0Cr18Ni9 (304), 00Cr18Ni10 (304L), 1Cr18Ni9Ti (321), 0Cr17Ni12Mo2 (316), 00Cr17Ni14Mo2 (316L), 0Cr18Ni12Mo2Ti (316Ti), 0Cr19Ni13Mo3 (317), 00Cr19Ni13Mo3 (317L25, 0Cr23NiS13)

304H, 304L,304,304LN, 304N 316L 316 316H 316TI 316N 316LN 317L 317H 309S 309H 310S 310H 904L AND OTHER SPECIAL GRADE

OD sizes:

Stainless steel welded pipe products can be produced according to national standards GB, American standard ASTM, Japanese standard JIS, German standard DIN, EU EN and other standards. The current product specifications are φ12 ~ φ2500mm, wall thickness 0.5 ~ 45.0mm, and the annual production capacity reaches more than 15,000 tons.

Our Stainless Welded Pipes Products are widely used in petroleum, chemical industry, papermaking, electric power, nuclear power, heat exchangers, condensers, food and beverage, pharmaceutical and other industries or others projects.



Quality promising     

RYIN STAINLESS had advanced stainless steel composition fast analyzer, X-ray real-time imaging flaw detection system and large-scale hydraulic pressure test unit and other testing equipment.

RYIN STAINLESS has obtained a pressure pipe component manufacturing license, and has passed the IS09001-2000 international quality system certification. It is a contract-honoring and trustworthy enterprise in Jiangsu Province and an AAA-level credit enterprise in banks.

We had exported more than 30 countries and have a good reputation high-quality products, strong strength, and low prices.


Our company specializes in producing stainless steel pipes such as stainless steel welded pipes, stainless steel water pipes, food sanitary pipes, and non-ferrous metal pipes such as titanium alloys and high nickel alloys.


Our factory has ISO9001 quality management system certification and pressure pipeline component manufacturing licenses. we also have a sound quality inspection.We also have control system which equipped with industrial CT, chemical analysis, eddy current testing, water pressure testing, air tightness testing and other inspection and testing equipment, and has established.

The after-sales service system with customer satisfaction as the goal guarantees product quality and meets customer needs.

Why Ryin Stainless Welded Pipes Factory is your best choice among others supplier?

First of all,RYIN STAINLESS PIPES is one of famous welded and seamless pipe manufacturer and exporter for more than 15 years. Besides that, Almost all Chinese famous factories that you can name of have long term cooperation with us. For example, TPCO, HYST, BAO STEEL, ANHUI TIANDA, JIANGYING SEAMLESS, JIULI, and WUJIN, XINYU TISCO etc. Because of our good relationships, we can get lower price from them, and make more efficient communication with them.

Furthermore, RYIN STAINLESS supplies a big range of metal tubes, including Stainless steel tubes (ASME SA312), boiler tubes (ASME A213),and finned tubes, etc. RYIN STAINLESS Welded PIPES is your best choice of one-stop solution in purchasing Welded stainless pipe and seamless stainless steel tubes.

Due to that, if you need to purchase more than one kind of them, contacting with so many different factories and doing repeat jobs time after time may become your big headache, not to mention the difficulty of arranging the loading and delivery of them together.

Therefore, to choose RYIN STAINLESS Welded PIPES to get the one-stop purchasing solution service is your best decision. RYIN  will monitor the whole process from ordering to delivery, so that everything will be under control as much as possible.

Our most competitive products are seamless stainless steel tubes,welded stainless steel pipe, copper welded pipes,Titanium alloy steel Welded Pipes ,High nickel alloy steel Welded Pipe and Stainless clad welded pipe.

Need other steel tubes? Contact us now!