Specifications

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Visual Examination of Coating

1.Pipe would be free of ovality through out the length of pipe

2.Pipe inside and outside surface should not have fold, hairline, delamination, crack, rolling

 defects such as folding, scarring.These defects shall be completely removed, remove depth

 shall not exceed 12.5% of the nominal wall thickness.

3.Coupling outside surface should not have fold, hairline, delamination, crack, rolling defects

   such as folding, scarring.

4.Casing pipe and coupling thread surface should be smooth, there should be no burr, tear 

   and something to make the thread tied to interrupt impact strength and other defects

Inspection of Physical Properties 

Hydrostatic pressure test, flattening test, sulfide stress corrosion cracking test,hardness 

testing,Tensile test, transverse impact test,Determination of grain size

Application and Category

Oil casing is to maintain the lifeblood of any oil Wells.Due to the different geological 

conditions,downhole complex stress state,tension, pressure, bending, torsion stress 

combination on the pipe body,which raised higher requirement about the quality of the 

casing itself.Once the casing damage itself for some reason,that may lead to the reduction 

output of the well, or even scrapped.

Products Pictures

Packing: Wooden case or as clients' request.

Shipping: By sea or by air for exporting goods.

Cangzhou Lockheed Drilling Equipment Parts Co., Ltd. is a professional technology-oriented 

enterprise specialized in the production drilling equipments and tools, which is one of the leading corporations of drilling tools and workover fishing tool manufacturing industry. Including three series with full model types,as follows:

Drilling Bit series: rock roller bit,tricone bit,pdc drill bit,single bit,cone bit and hole opener; 

Drilling Equipment Parts series: manual tong,elevator,slips,stabilizer;

Workover Fishing Tool series: releasing spear,junk basket, overshot,reversing sub,die collar, fishing tap etc.

Our goal: Strive for Perfection and Win by Quality.

1. How to order the products? 

Answer: 
Send the inquiry with detail item description or with Model number. 
If there is no packing demand we take it as sea-way packing. 
If possible please attach one reference picture to avoid any misunderstanding or any links from our website for we get a better understanding. 
2. About lead time and shipping time? 
Answer : 
The lead time depend on quantity of order. Usually shipped by sea, small order or urgent order we can send you by air after received your agreement. 
According the distance from china to your port, usually from China to European about 25 days. To West of American 20 days.

3.Can I expect a quality products? 
 Answer : 
Yes. All our activities are accredited to ISO 9001:2008 and API, both in products and services, at the same time, mature production technology ensuring the quality satisfy international request.