Liaoning Northern Steel Pipe Co., Ltd., (its former entity C Northern Steel Pipe Co., Ltd. of Haicheng), the modern Sino-Hong Kong joint venture, is specialized in producing steel pipes like petroleum tubing, casing, line pipe and design & development as well.
Liaoning Northern Steel Pipe Co., Ltd. was established in 1992, and has been conferred Det Norske Veritas (DNV) ISO9001 Quality Management System Certificate & API 5L Certificate in 1997 and API 5CT Certificate in 2000 and ISO14001 Environmental Management System Certificate in 2014 which are re-audited regularly to assure the consummate modernized production management, technical management and strict operation management has been established as a high level pipe manufacturer and has received excellent performance reviews from our domestic and international client.
With simple organization and capable staff, during many years production, our company has gathered excellent pipe producing and manager expericnce, also be one of the senior steel pipe manufacturers.

Main Product
- Main product: Petroleum Oil Tubing and Casing Pipe, Petroleum Natural Gas Line Pipe, structure steel pipe and the plastic end protector match with the steel pipe
- Product scope : ERW : Diameter: 1.9---13-3/8壨114.3mm-339.7mm, capacity is 150,000 tons per year
New workshop for finished casing and coupling of both ERW and Seamless steel pipe for each grade: Diameter: 4-1/2 - 7 114.3mm-177.8mm, capacity is 50,000 tons per year

- Our company also equips the completed Mechanical and Chemical Test Centre which formed the solid basis for manufacturing the high quality petroleum pipe.
- Applied standard: API-5LAPI-5CTASTM A53 B ASTM589ASTM 252BS 1387GB/T9711-2011GB/T3091-2008 etc.

Quality Control
Liaoning Northern Steel Pipe Co., Ltd. deems ? Quality is first, advanced technology and consummate equipment are the basis which guarantee the effective quality control system to supply the satisfied product to the customers ? as our continuous guideline. And ?To be responsible for the product quality, to be confident for the service? is our tenet. Our company executes the ISO9002 quality system and API Q1 quality regulations.
The quality control system of our company consists of 22 factors like management responsibility, quality control system, contract audit, process design control, document & data control, procurement, material control, material/product marking and traceable process control, inspection and testing, measurement and testing equipment control, inspection and testing status, nonconformance control, repairing, moving, washing, storage, packing and delivery, quality record control, internal quality audit, training course, service, statistics, QC activity, QC award & penalty etc.
The high quality is our company ' essential condition, the quality will be determined by all our personnel, so once wherever is high quality there is the long-life enterprise. The effective quality system ensure the product quality, and our product has been conferred the quality certificates of National Petroleum Natural Gas General Company pipe quality supervision and inspection centre and Liaoning Metallurgy Product Quality Supervision Bureau.
Our products have owned API 5L Certificate and API 5CT Certificate
The strict quality management and reliable product quality make our steel pipe with ?NPC? brand is becoming known in the international market. The clients like Liaohe Oil Field, Daqing Oil Field, Dalian Shipbuilding Company, United States and Japanese gave the high praise to our products as well.

The advanced equipments, outstanding team, completed specifications and scientific management create the excellent brand. The our steel pipes of NPC brand are sold to many countries and regions like United States, Japan, Mongolia, Hazakhstan, Bangladesh, Indonesia, Burma, Hong Kong, Canada, Australia, Middle East, English, Bolivia and chile etc. Meanwhile, our products have gained the domestic universal clients ' trust. Our company is the qualified supplier of Towngas China, China Res Gas, China Gas and China National Aviation Fuel. Daqing Oil Field, Liaohe Oil Field, Dalian Shipbuilding Company, Tianjin Heat Supply Co., Ltd., Qingdao Urban Gas Construction Project, Jinan Natural Gas Project, Baotou Heat Supply Construction, Hangzhou Natural Gas Co., Ltd. Chongqing Gas Group, Qinhuangdao Gas, Jining China Rec Gas, Tieling Towngas and Nanchang Gas Co., Ltd etc. have purchased NPC Pipe under the long-term contract.
We sincerely hope to enhance the relationship with the customers from all over the world by supplying our excellent product and service. Welcome you to contact and visit our factory to seek the cooperation chance.
We will be your reliable partner for a successful project !!