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 High Pressure Mechanical Seamless Alloy Steel Pipe / Tubes OD WT Customized factory

High Pressure Mechanical Seamless Alloy Steel Pipe / Tubes OD WT Customized

High Pressure Mechanical Seamless Alloy Steel Pipe / Tubes OD WT Customized Specifications: Surface Treatment: Oiling/Black painting/Varnish/Passivation/Phosphating/Pickling Ends: BE/PE, ends caps Marking: as ... Read More
2017-03-14 13:47:38
China Structural 1/2 - 5 Inch Seamless Alloy Steel Pipe Tube For Heat-Exchanger factory

Structural 1/2 - 5 Inch Seamless Alloy Steel Pipe Tube For Heat-Exchanger

Structural 1/2 - 5 Inch Seamless Alloy Steel Pipe Tube For Heat-Exchanger 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 A106 Hot Finished Pipe Carbon Steel with Oiling 1m - 16m factory

ASTM A106 Hot Finished Pipe Carbon Steel with Oiling 1m - 16m

ASTM A106 Hot Finished Pipe Carbon Steel with Oiling 1m - 16m Specifications: Steel Grade: A/B/C Surface Treatment: Oiling/Black painting/Varnish/Passivation/Phosphating Ends: BE/PE, ends caps Marking: as per ... Read More
2017-03-14 13:47:38
China Industrial Threaded Hot Roll / Cold Drawn Seamless Carbon Steel Pipe factory

Industrial Threaded Hot Roll / Cold Drawn Seamless Carbon Steel Pipe

Industrial Threaded Hot Roll / Cold Drawn Seamless Carbon 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 A334 Carbon Steel Seamless Pipe And Tube , 2 Inch 4 Inch Steel Pipe Non - Secondary factory

ASTM A334 Carbon Steel Seamless Pipe And Tube , 2 Inch 4 Inch Steel Pipe Non - Secondary

ASTM A334 Carbon Steel Seamless Pipe And Tube , 2 Inch 4 Inch Steel Pipe Non - Secondary SPECIFICATIONS: Surface Treatment: Oiling/Black painting/Varnish/Passivation/Phosphating/Pickling Ends: BE/PE, ends caps ... Read More
2017-03-14 13:47:38
China DIN1630 High Performance Seamless Circular Steel Tubes , Black Carbon Steel Pipe factory

DIN1630 High Performance Seamless Circular Steel Tubes , Black Carbon Steel Pipe

DIN1630 High Performance Seamless Circular Steel Tubes , Black Carbon Steel Pipe Specifications: Surface Treatment: Oiling/Black painting/Varnish/Passivation/Phosphating/Pickling Ends: PE, ends caps Marking: as ... Read More
2017-03-14 13:47:38
China Precision Seamless Steel Pipe / Tubing ASTM A334 / 334M , Low Temperature factory

Precision Seamless Steel Pipe / Tubing ASTM A334 / 334M , Low Temperature

Precision Seamless Steel Pipe / Tubing ASTM A334 / 334M , Low Temperature 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 DIN1629 Circular Seamless Mild Steel Tube , Oiling / Black Cold Drawn Steel Pipes factory

DIN1629 Circular Seamless Mild Steel Tube , Oiling / Black Cold Drawn Steel Pipes

DIN1629 Circular Seamless Mild Steel Tube , Oiling / Black Cold Drawn Steel Pipes Specifications: Surface Treatment: Oiling/Black painting/Varnish/Passivation/Phosphating/Pickling Ends: PE, ends caps Marking: ... Read More
2017-03-14 13:47:38
China ASTM A335 P5 P11 P12 Cold Drawn Alloy Steel Heavy Wall Steel Pipe Seamless 6m - 16m factory

ASTM A335 P5 P11 P12 Cold Drawn Alloy Steel Heavy Wall Steel Pipe Seamless 6m - 16m

ASTM A335 P5 P11 P12 Cold Drawn Alloy Steel Heavy Wall Steel Pipe Seamless 6m - 16m Specifications: Surface Treatment: Oiling/Black painting/Varnish/Passivation/Phosphating/Pickling Ends: BE/PE, ends caps ... Read More
2017-03-14 13:47:38
China Mechanical DIN1630 Seamless Steel Pipe And Tube Of Unalloyed Steels factory

Mechanical DIN1630 Seamless Steel Pipe And Tube Of Unalloyed Steels

Mechanical DIN1630 Seamless Steel Pipe And Tube Of Unalloyed Steels 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
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