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 Precision Carbon Steel Seamless Tube factory

Precision Carbon Steel Seamless Tube

Precision Heavy Wall Carbon Steel Seamless Tube DIN1630 , High Performance Specifications: Surface Treatment: Bare/Oiling/Black painting/Varnish/Passivation/Phosphating/Pickling or as per required Ends: PE, ... Read More
2015-11-11 15:53:17
China High Pressure Unalloyed Carbon Steel Seamless Tube , Heat Temperature Resistant factory

High Pressure Unalloyed Carbon Steel Seamless Tube , Heat Temperature Resistant

High Pressure Unalloyed Carbon Steel Seamless Tube , Heat Temperature Resistant Specifications: Surface Treatment: Bare/Oiling/Black painting/Varnish/Passivation/Phosphating/Pickling or as per required Ends: PE... Read More
2017-03-14 13:47:38
China Round Carbon Steel Seamless Tube factory

Round Carbon Steel Seamless Tube

High Pressure Unalloyed Carbon Steel Seamless Tube , Heat Temperature Resistant Specifications: Surface Treatment: Bare/Oiling/Black painting/Varnish/Passivation/Phosphating/Pickling or as per required Ends: PE... Read More
2015-11-11 15:53:16
China DIN17175 ST35.8 /1.0305 steel round tube OD31.75mm woven bag wrapping factory

DIN17175 ST35.8 /1.0305 steel round tube OD31.75mm woven bag wrapping

DIN17175 ST35.8 /1.0305 steel round tube OD31.75mm woven bag wrapping DIN17175 SEAMLESS TUBES OF HEAT-RESISTANT STEELS Part 1: Specification for low tensile carbon steel tubes without specified elevated ... Read More
2017-03-14 14:09:40
China ASTM A519 Seamless Heavy Wall Steel Tube / Tubing For Industrial , Auto Parts factory

ASTM A519 Seamless Heavy Wall Steel Tube / Tubing For Industrial , Auto Parts

ASTM A519 Seamless Heavy Wall Steel Tube / Tubing For Industrial , Auto Parts 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 High Pressure Cold Drawn Seamless Tube factory

High Pressure Cold Drawn Seamless Tube

High Pressure Cold Drawn Seamless Tube Carbon Steel Pipe, Black Painting ASTM A106 ( ASME SA106 ) GRADE A/B/C COLD DRAWN SEAMLESS TUBE FOR PRESSURE SERVICE Specifications: Steel Grade: A/B/C Surface Treatment: ... Read More
2015-11-11 15:47:28
China Precision Cold Drawn Seamless Tube factory

Precision Cold Drawn Seamless Tube

Hydraulic Precision Cold Drawn Seamless Tube And Pipe / Thick Wall Steel Tube Specifications: ASTM A106 COLD DRAWN SEAMLESS CARBON STEEL TUBE Steel Grade: A/B/C Surface Treatment: Oiling/Black painting/Varnish... Read More
2015-11-11 15:47:26
China High Pressure Seamless Boiler Tubes Standard ASTM A210 / Carbon Steel Seamless Pipe factory

High Pressure Seamless Boiler Tubes Standard ASTM A210 / Carbon Steel Seamless Pipe

High Pressure Seamless Boiler Tubes Standard ASTM A210 / Carbon Steel Seamless Pipe SPECIFICATIONS: Surface Treatment: Oiling/Black painting/Varnish/Passivation/Phosphating/Pickling Ends: BE/PE, ends caps ... Read More
2017-03-14 13:47:38
China A179 Cold Drawn Seamless Tube Round Steel Tubing 25.4 * 2.11 * 11800mm factory

A179 Cold Drawn Seamless Tube Round Steel Tubing 25.4 * 2.11 * 11800mm

A179 Cold Drawn Seamless Tube Round Steel Tubing 25.4 * 2.11 * 11800mm ASTM A179 ( ASME SA179 ) COLD DRAWN SEAMLESS CARBON STEEL PIPE FOR HEAT - EXCHANGER AND CONDENSER Surface Treatment: Oiling/Black painting... Read More
2017-03-14 13:47:38
China High Temperature Resistant Seamless Steel High Pressure Steam Pipe ASTM A106 factory

High Temperature Resistant Seamless Steel High Pressure Steam Pipe ASTM A106

High Temperature Resistant Seamless Steel High Pressure Steam Pipe ASTM A106 Specifications: Steel Grade: A/B/C Surface Treatment: Oiling/Black painting/Varnish/Passivation/Phosphating Ends: BE/PE, ends caps ... Read More
2017-03-14 13:47:38
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