Tubing couplings,casing couplings,pup joints of casing and tubing,tool joints,adapter pup-joints,ada
Coupling Manufacturer of Tubing and Casing coupling according to API SPEC 5CT AND 5B
API couplings for oil tubing and casing
Size and Specifications
Descriptions and size
Type of Thread
1.Grade:J55, K55, N80-1, N80-Q, L80, C90, P110
2.We also supply permium thread products by customer's request
3.Size: tubing coupling from 1.9" to 4-1/2",Casing coupling fro4-1/2"to 13-3/8"
4.Type: NU, EU(tubing coupling), STC,LC,BTC(casing coupling).
5.Surface treatment: Whole phosphating, or inside phosphating and outside coating
6.Packing: By carton, wooden case, wooden pallet, or by requirements of customers
Our company manufacture and sell casing and tubing couplings,pup joints, tool joints, adapter pup-joints, adapter couplings, stabilizers, air-liquid separators, anchors of oil pumps and revolving sand gravitated device, etc.
Puyang Dongfanglong Machinery Manufacturing Co., Ltd. is a modern and professional manufactory which was founded in 1999 and is located at No.373, East Shengli Road, Puyang, Henan Province. The area of our company is over 10,000 square meters, and the area of workshop is over 1,200 square meters. Our company has integrated equipment and processing capacities of machining, heat-treatment, surface treatment, and hot extruding. For human resources, we have 2 senior engineers, 8 engineers and technicians and 14 inspectors, and have advanced processing technology and experience of casing and tubing couplings, pup joints, tool joints and downhole tools. Quality of our products is stable and excellent. Our products are widely used in Central Plain Oilfield, Dagang Oilfield, Shengli Oilfield, and Changqing Oilfield. We have got unanimous approval from users. Main products of our company are various coupling models, pup joints, adapter pup-joints, adapter couplings, tool joints, , stabilizers, anchors of oil pumps and revolving sand gravitated device of well etc.
Our company received ISO9001 quality certification issued by Chinese Quality Certification Center in April, 2004, and received API monogram license in Sept., 2007 (license number 5CT-0837) and May 2008 (license number 7-0649). We are network member of material suppliers of China Petro-chemical Co., Ltd. Central Plains Branch.
Puyang Dongfanglong Machinery Manufacturing Co., Ltd. has established and implemented the spirit of "Quality First, Service First, Realistic and Innovative, Mutual Benefits and Win-Win Result". Relying on advanced technology, modern equipment, strict management and good reputation, our company continuously provides high-quality products and service for customers.