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 ASME SA210 Grade A1 / C seamless black steel pipe for Boiler , OD 12.7-127mm factory

ASME SA210 Grade A1 / C seamless black steel pipe for Boiler , OD 12.7-127mm

ASME SA210 Grade A1 / C seamless black steel pipe for Boiler , OD 12.7-127mm 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 Building Structural Carbon Steel Seamless Black Steel Pipe With High Temperature Resistant factory

Building Structural Carbon Steel Seamless Black Steel Pipe With High Temperature Resistant

Building Structural Carbon Steel Seamless Black Steel Pipe With High Temperature Resistant Specifications: Steel Grade: A/B/C Surface Treatment: Oiling/Black painting/Varnish/Passivation/Phosphating Ends: BE/PE... Read More
2017-03-14 13:47:38
China ASTM A333 Seamless Steel Pipe , Seamless Carbon Steel Pipe Wall Thickness 1mm - 12mm factory

ASTM A333 Seamless Steel Pipe , Seamless Carbon Steel Pipe Wall Thickness 1mm - 12mm

ASTM A333 Seamless Steel Pipe , Seamless Carbon Steel Pipe Wall Thickness 1mm - 12mm SPECIFICATIONS: Surface Treatment: Oiling/Black painting/Varnish/Passivation/Phosphating/Pickling Ends: BE/PE, ends caps ... Read More
2017-03-14 13:47:38
China Round Seamless Steel Pipe And Tube / Seamless Carbon Steel Pipe factory

Round Seamless Steel Pipe And Tube / Seamless Carbon Steel Pipe

Round Seamless Steel Pipe And Tube / Seamless Carbon Steel Pipe SEAMLESS STEEL PIPE FOR FLUID TRANSPORTATION, PETRO-CHEMICAL EQUIPMENT, BOILER Specifications: Surface Treatment: Oiling/Black painting/Varnish... Read More
2017-03-14 13:47:38
China ASTM A210 Gr. A1 seamless carbon steel pipe for Super Heater and Boiler factory

ASTM A210 Gr. A1 seamless carbon steel pipe for Super Heater and Boiler

ASTM A210 Gr. A1 seamless carbon steel pipe for Super Heater and Boiler SPECIFICATIONS: Surface Treatment: Bare/Oiling/Black painting/Varnish/Passivation/Phosphating/Pickling Ends: BE/PE, ends caps Marking: as ... Read More
2017-03-14 14:02:09
China Precision Heavy Wall Seamless Black Steel Pipe Carbon Steel Tubes ASTM A179 factory

Precision Heavy Wall Seamless Black Steel Pipe Carbon Steel Tubes ASTM A179

Precision Heavy Wall Seamless Black Steel Pipe Carbon Steel Tubes ASTM A179 ASTM A179(ASME SA179) Seamless Steel Pipe Surface Treatment: Oiling/Black painting/Varnish/Passivation/Phosphating Ends: BE/PE, ends ... Read More
2017-03-14 13:47:38
China ASTM A179 Cold Drawn Seamless Steel Pipe OD 1/8 inch – 3 Inch factory

ASTM A179 Cold Drawn Seamless Steel Pipe OD 1/8 inch – 3 Inch

ASTM A179 Cold Drawn Seamless Steel Pipe OD 1/8 inch 3 Inch ASTM A179 ( ASME SA179 ) COLD DRAWN SEAMLESS CARBON STEEL PIPE FOR HEAT - EXCHANGER AND CONDENSER Surface Treatment: Oiling/Black painting/Varnish... Read More
2017-03-14 13:47:38
China Seamless Steel Pipe Carbon Steel Bare Tube / Black Painted / Varnished / Phosphating factory

Seamless Steel Pipe Carbon Steel Bare Tube / Black Painted / Varnished / Phosphating

Round WSeamless Steel Pipe And Tube / Seamless Carbon Steel Pipe SEAMLESS STEEL PIPE FOR FLUID TRANSPORTATION, PETRO-CHEMICAL EQUIPMENT, BOILER Specifications: Surface Treatment: Oiling/Black painting/Varnish... Read More
2015-12-23 13:27:37
China Heavy Wall Round Seamless Steel Pipe ASTM A53 / Seamless Carbon Steel Tubes factory

Heavy Wall Round Seamless Steel Pipe ASTM A53 / Seamless Carbon Steel Tubes

Heavy Wall Round Seamless Steel Pipe ASTM A53 / Seamless Carbon Steel Tubes ASTM A53/A53M(ASME SA53/53M) GRADE A/B SEAMLESS STEEL TUBE FOR FLUID TRANSPORTATION OR PRESSURE PART Specifications: ASTM A53/A53M... Read More
2017-03-14 13:47:38
China High Pressure Seamless Steel Pipe GB 5310 Black Alloy Steel Seamless Tubes factory

High Pressure Seamless Steel Pipe GB 5310 Black Alloy Steel Seamless Tubes

High Pressure Seamless Steel Pipe GB 5310 Black Alloy Steel Seamless Tubes 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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