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


Hot Rolled Steel Pipe


Manufacturing process of the hot rolled steel pipe
We produce technology advanced hot rolled seamless steel tubes using continuous tube rolling mills. The hot rolling process consists of steel billet → heating → punching → three-roller skew rolling → tube knockout → tube diameter reducing → cooling → semi-finished pipe → straitening → water pressure test → labeling → warehouse entry.

rolling process, the thickness of continuous casting slab is around 230mm, while after rough rolling and finish rolling, the thickness is 1~20mm. Due to small flakiness ratio, the steel plate has a low requirement on its dimensional accuracy. However, crown control is still important.


Our API 5L pipes are widely used in the oil and natural gas industries to transmit gas, oil and water. 

Dimension of API 5L Seamless Steel Pipe 
Diameter: 114MM-914MM 
Thickness: 4MM-60MM 
Length: As your requirements
Specification: 114-914MM*4-60MM

Ordering Information 
Supply ability: 20000 T/ month 
Standard package: In bundles or bulk pack or according to your requirements 
Minimum order quantity: 10 tons or by mutual consultation
FOB Price: Competitive price 
Loading port: Tianjin, Shanghai, Qingdao
In terms of payment, we accept T/T and L/C. We can deliver our products within 7-15 days, or you can set the delivery time as you wish.

Founded in 1997,tj Steel Pipe Manufacturing Co., Ltd. is an experienced API 5L pipe manufacturer located in China. Our other industrial pipes include anticorrosion pipes, spiral tubes, ERW welded steel tubes and LSAW tubes. Our high quality steel pipes, are widely used in gas, oil and construction industries. 
Any further inquires about our API 5L seamless steel pipes, please contact us by email or the contact addresses available on this website. We are looking forward to cooperating with you.

上一篇:Big Size Stainless Steel Tubing

下一篇:cold drawn seamless carbon steel tube