444.5mm large diameter hole opener from China suppliers

features of 444.5mm hole opener

Large-diameter assembled bit is widely used in construction, bridge, highway and railway construction. This series of bits are suitable to various kinds of strata including shale, limestone, cobblestone, dolomite and conglomerate.

1.Suitable for medium to medium hard formation of high Crushing Resistanc (hard shale,sands,etc.)    

2.Bit bearing is non-sealed roller bearing.

3.Hardfacing is applied on the shirttail,and carbide inserts for gage protection are pressed into the head OD.

4.Cone gage surface is reinforce with carbide compacts. 

relevant data 

2.pictures of 444.5mm hole opener

444.5mm hole opener will be packed by wooden box

444.5mm hole opener will be shipped by sea or by air

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. 

PLs add the information in your inquiry.

1) the size of the tricone bit

2) the IADC tooth model, like 537G

3) PLs tell the drilling information of the layer.

4) PLs tell the quantity.

All sizes and IADC codes of drill bits are available. 

Special requirements of different models can be customized.