Laiwu Hengye Heavy Steel Forging CO., Ltd. is one of TOP 5 manufacturers producing drill collar, heavy
weight drill pipe.
Drill collars we produce is made from 4145H forging or rolling modified steel.Raw Materials are all from Top China Special Steel Group, so from the first beginning, we can assure high quality. We manage our Production and Inspection Process strictly according to API SPEC 7 requirements. All connections are phosphate-coated to improve resistance to corrosion. We can also do copper plating according to clients' requirements. We offer slip groove, elevator groove to improve handling efficiency and safety. Slip and elevator groove are machined in compliance with API RP 7G guidelines. We can also make stress relief groove according to clients' requirements. We provide free thread protector for both pin and box.
Different sizes we produce is from 3 1/2" to 11", our strength is large size like above 9" and small size like below 4 3/4".
Heavy weight drill pipes we produce is made from AISI 4145H alloy steel. We manage our production and inspection process strictly according to API SPEC 7 requirements. Excellent quality of our products have been proved by many famous chinese oilfields. Our products can last more than 600 hours with no thread gluing and no fracture. They can last much longer than other competitors in China.
We provides different size heavy weight drill pipe, 3 1/2", 4 1/2", 5", 5 1/2".
We promises our product with superior quality, long life, short delivery time and competitive price.
Welcome your enquiry at any time !
Contact Name: Mr. Jacky Kon
Company Name: LinSteel Group Co., Ltd.
Street Address: Linsteel New District,
Linfen City, Shansxi Province, 286000, China
Member name: paotian
Member Since: 11 October 2009
Total Leads: 1784 paotian Import Export Business Leads
Business focus: Galvanized Steel Coil, Pre-painted Steel Coil, Cold Rolled Steel Coil, Gi Coil, Hot Dipped Galvanized Steel Coil, Color Coated Steel Coil
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Product Category: Drill collars