Limestone Quarry Plant

One of the Top 500 enterprises in China foreign trade

QCCO was approved as a member of “China Association for Contracting Projects Abroad “and granted a membership certificate on Sep 28,2005; “Credibility Rating AAA certificate in Foreign Trade” was granted to QCCO by China Shippers’ Association


Seamless steeI tubes for structures


Seamless steeI tubes for structures 

1. Standards: 
GB/T 8162, ASTM A53, ASME SA53, DIN 1629/2448, GOST 8732-78 and so on. 

2. Function: 
Seamless steel tubes for manufacturing pipelines, vessels, equipment and mechanical structures 

3. Models of major grade steeI tubes: 
10, 20, 35, 45, Q345, 15CrMo, 12CrMoV, ASTM A53 Grade A, ASTM A 53 Grade B, SA53 A, SA53 B, etc. 

4. Size(specification): Outside Diameter: 57-219 mm; Wall Thickness: 5-40 mm; 

5. Dimension tolerance, Mechanical properties, and Chemical composition: Please refer to relevant standard or contact us. 


6. Packing: 
With or without edge protector, with or wihout light varnish or black oil, bundles with firm steel strip. Our packing could also as per customers' requirements 

Our company has carried out effective quality assurance system and long-term plan to maintain and improve product's quality, and expressly, our price is very competitive. Because we are manufactory, we are the source. 

Should any of these items be of interest to you, please let us know. We will be happy to give you details. Your inquiry will be highly appreciated and treated. 


Pipe fittings|
Steel pipe |
Seamless steel pipe|
Carbon steel pipe|
Stainless steel pipe|

Seamless pipe |
API  pipe|
ERW pipe|
Alloy pipe|


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