API oil tubing:we can provide the following products 

API 5CT seamless steel casing pipe

1.Type of thread: Type of thread:LC/STC/BC

2.Grades:API J55;API K55;API N80;API L80 and so on.

3.OD:from4 1/2"~20" (114.3~508mm)

4.WT:5.21~22.24mm

5.length R1(4.88~7.62),R2(7.62~10.36),R3(10.36~14.63) 

6.Tubing is used to extracting petroleum and natural gas from a well

Casing serves as wall of a well 

7. Pipe end :thread with one side coupling and protected by the plastic hat

8.Application:Oil Well Engineering,Oil Gas Engineering,Chemical Engineering,thermoelectric Enginering,Water Delivery Engineering,Ship Engineering. 

9 Internal and external surface of the casing is not folded, hair pattern, separation, cracking, rolling, folding and scarring.These defects have been completely removed,clear the depth of no more than 12.5% of the nominal wall thickness.

10.Casing and threaded coupling surface should be smooth, does not allow burr, tear and impact strength sufficient to interrupt threads and other defects in tight junction 

11.In order to assure product quality.our company has established inside QC lab with advanced chemical and physical inspection equipment.such as metallographic  microscopes,and NDT testing equipment and so on.

We are main products:seamless casing steel pipe and steel tubing pipe.

If you are interested in our products, pls contact me ASAP. Waitting for ur reply.

Note :1.all of our casing and tubing pipe strictly conform to API spec 5CT

2.we have both inside QC and third party certification to ensure the quality

Choose our product ,choose an easy way to safety and efficiency for your business and oil exploit