Sellers of spiral drill collar - MadeInTerra.com

Great Wall Drilling Tools Co., Ltd., China
Wholesaler, Distributor, Exporter and Seller of: bladed junk mill, drill pipe, float valve sub, heavy weight drill pipe, hexagonal kelly, integral blade string stabilizer, spiral drill collar, spiral heavy weight drill pipe, square kelly
http://www.tradeholding.net/default.cgi/action/viewcompanies/companyid/831546/

Shanxi Weigao Petroleum Drilling Tools Co., Ltd, China
Wholesaler, Distributor, Exporter and Seller of: drill collars, drill pipes, non-magnetic drill collars, integral heavy weight drill pipe, square kellys, hexagonal kellys, spiral drill collar
http://www.tradeholding.net/default.cgi/action/viewcompanies/companyid/960220/

Shanxi Golden Diamond Petroleum Drill Tools Co., Ltd., China
Wholesaler, Distributor, Exporter and Seller of: drill pipe, drill collar, heavy weight drill pipe, spiral drill collar, non-magnetic drill collar, kelllys, tube
http://www.tradeholding.net/default.cgi/action/viewcompanies/companyid/916560/

Jiyuan Sanhe Zhengyuan Petroleum Machinery Co., Ltd, China
Wholesaler, Distributor, Exporter and Seller of: drill collar, spiral drill collar, non-magnetic drill collar, integral heavy weight drill pipe, lifting sub, stabilizer, kelly
http://www.tradeholding.net/default.cgi/action/viewcompanies/companyid/480246/

Wuxi Yousiweike Petroleum Drilling Tools Co., Ltd., China
Wholesaler, Distributor, Exporter and Seller of: retained mpm mandrel bar, non-magnetic drill collar, drill collar, spiral drill collar, drill pipes, increase heavy weight drill pipe, retained pqf mandrel
http://www.tradeholding.net/default.cgi/action/viewcompanies/companyid/524227/