CHANGZHOU RUIYUAN STEEL TUBE CO., LTD.

 

We are leading manufacturer of CDS and HFS pipes and Tubes.

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seamless black steel pipe

Good quality Seamless Boiler Tubes for sales
Good quality Seamless Boiler Tubes for sales
RUIYUAN is a reliable supplier, we trust in them and already cooperated for 5 years. They offer good and stable quality, best service and price.

—— Mr.Wang from SINOPEC

As we've cooperated more than 7 years, RUIYUAN is not only a business partner, but also became a very best friend for us.

—— Mr.Sanjay Bajaj

They will always keep their words, and always put customer's benefit on first consideration, that's why we chose them as a long-term business partner!

—— Mr.Thomas BIttig

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seamless black steel pipe

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China Hot Roll / Cold Drawn Seamless Steel Pipe  , Low pressure OD 10.2 - 711mm factory

Hot Roll / Cold Drawn Seamless Steel Pipe , Low pressure OD 10.2 - 711mm

Hot Roll / Cold Drawn Seamless Steel Pipe , Low pressure OD 10.2 - 711mm SEAMLESS STEEL PIPE EN10216-1 FOR PRESSURE PURPOSES Part 1: Non-Alloy steel tubes with specified room temperature properties Surface ... Read More
2017-03-14 13:47:38
China High Performance Seamless Steel Pipe DIN1630 For Mechanical Engineering factory

High Performance Seamless Steel Pipe DIN1630 For Mechanical Engineering

High Performance Seamless Steel Pipe DIN1630 For Mechanical Engineering DIN1630 HIGH PERFORMANCE SEAMLESS STEEL PIPE Specifications: Surface Treatment: Oiling/Black painting/Varnish/Passivation/Phosphating... Read More
2017-03-14 13:47:38
China 1/8 - 4 Inch Seamless Steel Pipe / Low temperature steel tubing factory

1/8 - 4 Inch Seamless Steel Pipe / Low temperature steel tubing

1/8 - 4 Inch Seamless Steel Pipe / Low temperature steel tubing SPECIFICATIONS: Surface Treatment: Oiling/Black painting/Varnish/Passivation/Phosphating/Pickling Ends: BE/PE, ends caps Marking: as per ... Read More
2017-03-14 13:47:38
China ASME SA333 Gr.6 seamless boiler tubes / Annealed 4 inch steel pipe factory

ASME SA333 Gr.6 seamless boiler tubes / Annealed 4 inch steel pipe

ASME SA333 Gr.6 seamless boiler tubes / Annealed 4 inch steel pipe SPECIFICATIONS: Surface Treatment: Oiling/Black painting/Varnish/Passivation/Phosphating/Pickling Ends: BE/PE, ends caps Marking: as per ... Read More
2017-03-14 13:47:38
China ASTM A333 Gr.1 / Gr. 6 Seamless Steel Pipe with pickling phosphating and lubricating factory

ASTM A333 Gr.1 / Gr. 6 Seamless Steel Pipe with pickling phosphating and lubricating

ASTM A333 Gr.1 / Gr. 6 Seamless Steel Pipe with pickling phosphating and lubricating SPECIFICATIONS: Surface Treatment: Oiling/Black painting/Varnish/Passivation/Phosphating/Pickling/Lubricating Ends: BE/PE, ... Read More
2017-03-14 14:00:43
China ASTM A179 Seamless Steel Pipe , Cold Drawn Carbon Steel Pipe OD30 * WT2.5mm factory

ASTM A179 Seamless Steel Pipe , Cold Drawn Carbon Steel Pipe OD30 * WT2.5mm

ASTM A179 Seamless Steel Pipe , Cold Drawn Carbon Steel Pipe OD30 * WT2.5mm Surface Treatment: Oiling/Black painting/Varnish/Passivation/Phosphating Ends: BE/PE, ends caps Marking: as per requirement Delivery ... Read More
2017-03-14 14:02:44
China JIS G 3454 High Pressure Seamless Pipe Carbon Steel , 18 Inch 24 Inch Alloy Steel Pipes factory

JIS G 3454 High Pressure Seamless Pipe Carbon Steel , 18 Inch 24 Inch Alloy Steel Pipes

JIS G 3454 High Pressure Seamless Pipe Carbon Steel , 18 Inch 24 Inch Alloy Steel Pipes Specifications: Surface Treatment: Oiling/Black painting/Varnish/Passivation/Phosphating/Pickling Ends: BE/PE, ends caps ... Read More
2017-03-14 13:47:38
China Custom Circular Seamless Steel Pipe DIN1629 For Heat-Exchanger And Condenser factory

Custom Circular Seamless Steel Pipe DIN1629 For Heat-Exchanger And Condenser

Custom Circular Seamless Steel Pipe DIN1629 For Heat-Exchanger And Condenser Specifications: Surface Treatment: Oiling/Black painting/Varnish/Passivation/Phosphating/Pickling Ends: PE, ends caps Marking: as per ... Read More
2017-03-14 13:47:38
China Large Diameter Seamless Steel Pipe Standard For Boiler And Petro-Chemical Equipment factory

Large Diameter Seamless Steel Pipe Standard For Boiler And Petro-Chemical Equipment

Large Diameter Seamless Steel Pipe Standard For Boiler And Petro-Chemical Equipment SEAMLESS STEEL PIPE BIG SIZE WITH THIN WT FOR FLUID TRANSPORTATION, PETRO-CHEMICAL EQUIPMENT, BOILER Specifications: Surface ... Read More
2017-03-14 13:47:38
China Large Diameter Seamless Steel Pipe Standard Boiler Steel Tube factory

Large Diameter Seamless Steel Pipe Standard Boiler Steel Tube

Large Diameter Seamless Steel Pipe Standard For Boiler And Petro-Chemical Equipment SEAMLESS STEEL PIPE BIG SIZE WITH THIN WT FOR FLUID TRANSPORTATION, PETRO-CHEMICAL EQUIPMENT, BOILER Specifications: Surface ... Read More
2015-12-23 13:26:47
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