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


API 5CT Oilfield casing pipes,drilling casing tube


1. SIze: OD: 1.05" to4 1/2 ",  26.87MM to 114.3MM

              W.T:2.87 MM TO 16MM
              Length: R1,R2,R3
2. Standard & Grade:
    API 5 CT, H40,J55,L80,N80,T95,P110
3. Certification: API 5CT,CE,ISO9001



1. SIze:   OD: 4" 1/2" to 20"  114.3MM to 508MM

                 W.T:5 MM TO 16MM

                  Length: R1,R2,R3

2. Standard&Grade:

                API 5 CT, H40,J55,K55,M65,L80,N80,T95,P110


3. Certification: API 5CT,CE,ISO9001


1. Chemical composition acc. to API 5CT latest edition 

Grade P S C Si Mn Ni Cu
N80 ≤0.02 ≤0.01 ≤0.42 ≤0.45 ≤1.90 ≤0.25 ≤0.25


2.Mechanical performance


Grade T.S Y.S
N80Q ≥689MPa 552~758MPa

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