Oil Country Tubular Goods,OCTG
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          API steel pipe
          
 - API steel pipe
 - API steel casing pipe
 - Casing and Tubing
 - API drill pipe
 - API5L steel pipe
 - Oil pipeline
 

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          Carbon steel pipe
          
 - Carbon steel pipe
 - Welded steel Pipe
 - seamless carbon steel pipe
 - Petroleum Casing Pipe
 

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          Alloy steel pipe
          
 - astm a 335 gr p22
 - alloy steel pipe l555
 - 25crmo4 alloy steel pipe
 - alloy pipe a335 p11
 








- interpret seamless steel pipe
 - Water pipeline - Handling and
 - Applications of welded pipe pil
 - welded steel pipes and Seamless
 - ASTM A 106 Seamless Pipe
 - Carbon dioxide resistant oil ca
 - seamless steel pipe On-line col
 - EN 10305-1 / DIN 2391 cold draw
 - EN 10255 Standard Pipe,replaces
 - API 5L A53 / A106 Grade B, Seam
 
          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 tubing with coupling and thread protector 
Standard: API 5ct (certificate no. 5ct 023) 
Outside diameter: 1.9''--------4-1/2'' 
Steel grade: H40, J55, K55, N80, L80, P110, C90, C95, T95, Q125 
Thread type: EU, NU, PE 
Length range: R1, R2, R3 
Mainly product: Seamless casing, seamless tubing, seamless oil pipe(tubing), natural gas pipe(tubing), seamless steel pipe(tubing), casing accessories(tubing), drill pipe, premium connector(tubing), vam connector(tubing), couping, thread protector, pup-joint and liner pipe(tubing).

 
      

          