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 for drilling

 Seamless steel pipe for drilling 

steel pipes ,seamless pipe , seamless steel pipe 

Seamless steel pipe for drilling

Length: 5.8M 6M 11.8M random length cutted length

Standard: ASTM, DIN , JIS , GB , API

Material:  A25,Grade A,B, x42,x46,x52,x60,x65,x70

Packing: High quality Packing ,bundles with steel stripe,seaworthy wooden cases with or without edge protector,steel hoop and seals ,or according to custom's requirement,seaworthy  packing




.Steel pipe |

Seamless steel pipe|
Carbon steel pipe|
Galvanized steel pipe|
Galvanized pipe 

Our main products are seamless square steel tube for machinery,seamless rectangular steel tube with Q345B ,20#.



Square steel tube and rectangular steel tube


30*30-600*600 mm,30*20-600*550mm


3-25 mm


Q235B ,Q345B,20# ,ST37,ST44,ST52,ASTM A53, ASTM A 106 and so on


GB/T3094-2000 or JISG 3466 ,GB/T6728-2002 and so on

Payment terms

L/C or T/T


Wrapped with steel strips or as customer's requirement

Using description: Our main products are big diameter and thick square steel tubes ,which have filled the blank of both domestic and abroad markets.And they are wildiy using in PV modules as solar frames/suppor,construction structure,machinery,hall structure,airport structure ,shipbuilding,sea trestle ,offshore,oil filed ,curtain wall,Automobile axle pipe and so on.

Other products :seamless steel tube , weld steel tube ,oval tube, steel tube with the compound sections,spiral steel pipe,insulation steel pipe,anticorrosion steel pipe.

Stainless steel pipe
API pipe|
ERW pipe|
Seamless steel pipe|
Alloy pipe|

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