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


2 3/8'' API drill pipe

We are manufacturer of steel pipes. Any types can be made by customers' requests. High quality/Good reputation/Competitive price. 

OD: 2 3/8"-6 5/8". 
Grade: E, X, G, S 
Upset: IU, EU, IEU 
Standard: API 5DP 
Thickness: 0.28-0.415 inch 

Section Shape: Round 
Outer Diameter: 2 3/8-5 1/2 inch 
Place of Origin: Tianjin (Mainland) 
Secondary Or Not: Non-secondary 
Application: Drill Pipe 
Technique: Hot Rolled 
Certification: API 
Color: Black 

Our API drill pipes are of high physical property, for their strictly controlled processing of sulphur and phosphorus. To ensure the materials to meet even surpass the requirements of API Specification, heat treatment is on the basis of the actual chemical analysis of each heat of steel. Strict full-length inspection especially on the weld-neck region ensures the drill pipes are of no defects.



Seamless Boiler Pipe

Seamless Boiler pipe 

Outside diameter: 21.3 to 610mm (1/2-24 inch) 

Standard: API 5L, API 5CT, ASTM A53, ASTM A252, ASTM A500, BS1387 

Steel Grade: A, B, X42, X46, X52, X56, X60, X65 X70 PSL1 PSL2 

Thickness: SCH 20 to SCH 140mm (2-14 inch) 

Packing: Labeled and bundled together with steel strip 

Carbon Steel Pipe Type of pipe finish: Black paint on pipe, beveled or plain end with plastic cap. 

Carbon Steel Pipe 

Application: Line pipe in oil and sewage transportation, in low pressure liquid and gassy transportation, good structure steel pipes, used in building and bridge fields.


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