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 Carbon Steel Seamless Tube, Cold Drawn, ASTM A179, surface Pickling Phosphating and Lubricating factory

Carbon Steel Seamless Tube, Cold Drawn, ASTM A179, surface Pickling Phosphating and Lubricating

Carbon Steel Seamless Tube, ASTM A179, Surface with Pickling, Phosphating and Lubricating ASTM A179 ( ASME SA179 ) COLD DRAWN SEAMLESS CARBON STEEL PIPE FOR HEAT - EXCHANGER AND CONDENSER Surface Treatment: ... Read More
2015-12-22 17:28:04
China Large Diameter Seamless Heavy Wall Steel Tube , High Temperature Resistant factory

Large Diameter Seamless Heavy Wall Steel Tube , High Temperature Resistant

Large Diameter Seamless Heavy Wall Steel Tube , High Temperature Resistant 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
China High Pressure ASTM A192 Seamless Carbon Steel Tube For Boiler and Heat - Exchanger factory

High Pressure ASTM A192 Seamless Carbon Steel Tube For Boiler and Heat - Exchanger

High Pressure ASTM A192 Seamless Carbon Steel Tube For Boiler and Heat - Exchanger Specifications: SEAMLESS BOILER STEEL TUBE ASTM A192(ASME SA192) Surface Treatment: Oiling/Black painting/Varnish/Passivation... Read More
2017-03-14 13:47:38
China High Pressure Round Mild Steel Tube Wall Thickness 2.2mm - 25.4mm factory

High Pressure Round Mild Steel Tube Wall Thickness 2.2mm - 25.4mm

High Pressure Round Mild Steel Tube Wall Thickness 2.2mm - 25.4mm SPECIFICATIONS: 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 Threaded Standard DIN17175 Round Black Mild Steel Seamless Pipe Length 6 - 16m factory

Threaded Standard DIN17175 Round Black Mild Steel Seamless Pipe Length 6 - 16m

Threaded Standard DIN17175 Round Black Mild Steel Seamless Pipe Length 6 - 16m SEAMLESS STEEL PIPE DIN17175 OF HEAT-RESISTANT STEELS Part 1: Specification for low tensile carbon steel tubes without specified ... Read More
2017-03-14 13:47:38
China Hot Roll Carbon Steel Seamless Pipe EN10216-1 , Black Painting / Varnish Steel Tube factory

Hot Roll Carbon Steel Seamless Pipe EN10216-1 , Black Painting / Varnish Steel Tube

Hot Roll Carbon Steel Seamless Pipe EN10216-1 , Black Painting / Varnish Steel Tube EN10216-1 SEAMLESS STEEL TUBE (TR1/TR2) FOR PRESSURE PURPOSES Part 1: Non-Alloy steel tubes with specified room temperature ... Read More
2017-03-14 13:47:38
China Thin Wall Carbon Steel High Pressure Steel Pipe Seamless , Cold Drawn Water And Fuel Pipe factory

Thin Wall Carbon Steel High Pressure Steel Pipe Seamless , Cold Drawn Water And Fuel Pipe

Thin Wall Carbon Steel High Pressure Steel Pipe Seamless , Cold Drawn Water And Fuel Pipe Specifications: ASTM A53/A53M(ASME SA53/53M) Seamless Steel Tubes Steel Grade: A/B Surface Treatment: Oiling/Black ... Read More
2017-03-14 13:47:38
China 1/8 - 4 Inch Carbon Steel Seamless Pipe Standard ASTM A333 , Low Temperature factory

1/8 - 4 Inch Carbon Steel Seamless Pipe Standard ASTM A333 , Low Temperature

1/8 - 4 Inch Carbon Steel Seamless Pipe Standard ASTM A333 , Low Temperature 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 Round Seamless Thick Wall Steel Tube , Heavy Wall Pipe ASTM A53 A106 factory

Round Seamless Thick Wall Steel Tube , Heavy Wall Pipe ASTM A53 A106

Round Seamless Thick Wall Steel Tube , Heavy Wall Pipe ASTM A53 A106 Specifications: ASTM A53/A53M(ASME SA53/53M) Seamless Steel Tubes Steel Grade: A/B Surface Treatment: Oiling/Black painting/Varnish... Read More
2017-03-14 13:47:38
China Black Painting Carbon Steel Seamless Tube Wall Thickness 1.5-12mm For Mechanical factory

Black Painting Carbon Steel Seamless Tube Wall Thickness 1.5-12mm For Mechanical

Black Painting Carbon Steel Seamless Tube Wall Thickness 1.5-12mm For Mechanical GOST 8734-75 SEAMLESS COLD-FORMED STEEL TUBES Specifications: Surface Treatment: Oiling/Black painting/Varnish/Passivation... Read More
2017-03-14 13:47:38
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