Set up in 1995, Tonglu Valves Manufactring Co.,Ltd. is one of the leading China drill pipe manufacturer and supplier in Yongjia County of Zhejiang Province. We manufacture all products strictly conforming to the API, JIS, ANSI, BS, GB, NF and DIN standards. Our oem drill pipes are available to users on request and are used for municipal works, petroleum, chemical industry, power station, metallurgy, national defense, and scientific research fields.

With material of high-quality Proved by used for many years and the scientific experiments ,the drill pipe model E75,X95,G105 and S135 our company saled were made of after a multi-channel precision machining processes, together with strict quality control procedures.
Standard: API SPEC 5D
Size
1)OD: 2 7/8", 3 1/2", 4", 4 1/2", 5"
2)Length: 9500mm/12000mm(31.2ft/39.4ft)
3) Wall Thickness: 0.362"~1/2" (9.19~12.7mm)
4)Steel Grade: E75, X95, G105, S135
Drill Pipe performance Parameters

In our company there are drill pipe body upset and heat treatment line, drill pipe friction welding line and drill collar manufacture line. The main equipments were imported from USA and some of the raw materials are imported from Japan and USA. We can produced regular API E75, X95, G105, S135 drill pipe from 2-3/8to 5-1/2, heavy weight drill pipe,drill collar,kelly,drill stem sub and also has the advanced quality management system, acquired API license, ISO 9001-2000 ,ISO 14001-2004 and OHSAS-18000 licenses in June 2007.
LBT has the ability to satisfy the requirements from customers and supply high quality drill pipes, heavy weight drill pipe and drill collar to customers, and welcome to China and visit our company.

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