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 Heavy Wall Carbon Steel Pipe Seamless factory

Heavy Wall Carbon Steel Pipe Seamless

Precision Heavy Wall Low Temperature Carbon Steel Pipe Seamless For Boiler Flue EN10216-1 SEAMLESS STEEL TUBE (TR1/TR2) FOR PRESSURE PURPOSES Part 1: Non-Alloy steel tubes with specified room temperature ... Read More
2015-11-11 15:43:30
China ASTM A179 Thin Wall Carbon Steel Seamless Pipe , Condenser And Heat - Exchanger Tube factory

ASTM A179 Thin Wall Carbon Steel Seamless Pipe , Condenser And Heat - Exchanger Tube

ASTM A179 Thin Wall Carbon Steel Seamless Pipe , Condenser And Heat - Exchanger Tube Surface Treatment: Oiling/Black painting/Varnish/Passivation/Phosphating Ends: BE/PE, ends caps Marking: as per requirement ... Read More
2017-03-14 13:47:38
China JISG 3461 Galvanized Carbon Steel Seamless Pipe For Preheating Tubes / Industrial factory

JISG 3461 Galvanized Carbon Steel Seamless Pipe For Preheating Tubes / Industrial

JISG 3461 Galvanized Carbon Steel Seamless Pipe For Preheating Tubes / Industrial Specifications: Surface Treatment: Oiling/Black painting/Varnish/Passivation/Phosphating/Pickling Ends: BE, ends caps Marking: ... Read More
2017-03-14 13:47:38
China GB/T 8163 Seamless Steel Pipe , Cold Drawn Carbon Steel, OD70mm*WT2.0mm factory

GB/T 8163 Seamless Steel Pipe , Cold Drawn Carbon Steel, OD70mm*WT2.0mm

GB/T 8163 Seamless Steel Pipe, Cold Drawn Carbon Steel Pipe For Fluid Transportation Specifications: Surface Treatment: Bare/Oiling/Black painting/Varnish/Passivation/Phosphating Ends: BE/PE, ends caps Marking: ... Read More
2017-03-11 14:00:47
China Custom DIN 1629 Cold Drawn Seamless Tube For Pipe - Line And Mechanical factory

Custom DIN 1629 Cold Drawn Seamless Tube For Pipe - Line And Mechanical

Custom DIN 1629 Cold Drawn Seamless Tube For Pipe - Line And Mechanical 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 Black Industrial Hydraulic Cylinder Tube , High Pressure Seamless Steel Pipe DIN2391 factory

Black Industrial Hydraulic Cylinder Tube , High Pressure Seamless Steel Pipe DIN2391

Black Industrial Hydraulic Cylinder Tube , High Pressure Seamless Steel Pipe DIN2391 Specifications: Surface Treatment: Oiling/Black painting/Varnish/Passivation/Phosphating/Pickling Ends: PE/BE, ends caps ... Read More
2017-03-14 13:47:38
China Seamless Carbon Steel Heat Exchanger Tubes OD 16mm - 90mm , Cold Drawn factory

Seamless Carbon Steel Heat Exchanger Tubes OD 16mm - 90mm , Cold Drawn

Seamless Carbon Steel Heat Exchanger Tubes OD 16mm - 90mm , Cold Drawn BS3059-1 GRADE 320 COLD DRAWN SEAMLESS TUBE FOR HEAT EXCHANGER Specifications: Production Name: COLD DRAWN CARBON STEEL SEAMLESS TUBE ... Read More
2017-03-14 13:47:38
China Carbon Steel Alloy Steel Pipe Seamless ASTM A213 / SA213 , Cold Drawn Steel Tube factory

Carbon Steel Alloy Steel Pipe Seamless ASTM A213 / SA213 , Cold Drawn Steel Tube

Carbon Steel Alloy Steel Pipe Seamless ASTM A213 / SA213 , Cold Drawn Steel Tube Specifications: Surface Treatment: Oiling/Black painting/Varnish/Passivation/Phosphating/Pickling Ends: BE/PE, ends caps Marking: ... Read More
2017-03-14 13:47:38
China Standard Seamless U Bend Pipe , Cold Drawn Heat Exchanger Tubing BS3059-2 factory

Standard Seamless U Bend Pipe , Cold Drawn Heat Exchanger Tubing BS3059-2

Standard Seamless U Bend Pipe , Cold Drawn Heat Exchanger Tubing BS3059-2 U BEND PIPE BS3059-2 HEAT EXCHANGER TUBE BS3059-2 Part 2. Specification for carbon, alloy and austenitic stainless steel tubes with ... Read More
2017-03-14 13:47:38
China Petroleum 1/8 - 26 Inch CS Seamless Pipes , Galvanized Carbon Steel Tubing factory

Petroleum 1/8 - 26 Inch CS Seamless Pipes , Galvanized Carbon Steel Tubing

Petroleum 1/8 - 26 Inch CS Seamless Pipes , Galvanized Carbon Steel Tubing 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
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