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 Steel Pipe Thick Wall

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Product Name 
Thick wall Seamless steel pipe 

Outside Diameter(mm) 
20mm-820mm 

Wall thickness(mm) 
3mm-50mm 

Certification 
ISO9001: 2000 

Standard 
ASTM, BS, DIN GB 

Grade 
10#, 20#, 45#, A53(A, B), Q195, Q215, Q235, ST 52 

Place of Origin 
Hebei China(Mainland) 

Secondary Or Not 
Non-secondary 

Export 
Europe, North America, the Middle East, Africa, Asia and other countries and regions, well received by consumers! 

Seamless theoretical weight by 
Seamless calculation formula: (OD - Wall Thickness) × Thickness × 0.02466 = Seamless weight per meter 

Seamless process 
Seamless Steel Tube - Inspection - Skinning - Testing - Heating - perforation - Pickling - grinding - dry lubricant - welding head - cold drawn - solution treatment - acid - - pickling passivation - test - cold - to oil - the first cut - dried - in polish - outside polished - test - identification - product packaging 

Seamless-Steel-Pipe-Thick-Wall

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