Powered by Made-in-China.com
Product profile
After-sales Service
YesWarranty
1 YearManufacturing Process
CNC MillingSurface Treatment
PhosphatingOperation Pressure
Atmospheric PressureMaterial
Seamless PipeProduct Name
Casing Coupling Stc Ltc Thread Casing CollarStandard
API 5CTSize
1.315-20"Thread
Stc, Ltc, BtcGrade
J55, K55, L80, N80, P110Used for
Pipe AdapterSurface
PaintingTransport Package
Wooden Case, Wooden PalletSpecification
1.315-20"Trademark
EASTLONGOrigin
Tianjin, ChinaHS Code
7307990000Production Capacity
100000*/MonthCompany profile
Business Type: Manufacturer/FactoryExport Year: 2019-06-07Nearest Port: TIANJIN PORT, QINGDAO PORT, SHANGHAI PORTAverage Response Time: ≤15hTerms of Payment: LC, T/T, PayPal, etc.International Commercial Terms(Incoterms): FOB, EXW, CIF, DDP
AI-Powered supplier vetting
SummaryTianjin Dongfanglong Petroleum Equipment Manufacture Co., Ltd. is a China-based manufacturer founded in 1999, focused on oil pipes, pipe fittings, drilling and production tools, and petroleum automation equipment. The supplier reports ISO 9001 and ISO 14001 certification, 10 production lines, 11–20 years of R&D engineer experience, and 11–20 quality-control staff. It states that its capabilities cover design, development, manufacturing, testing, experimentation, and full-cycle service, supported by more than 30 independent intellectual property rights and an intelligent workshop. The company exports to broad global markets and reports export activity since 2019, but the provided information does not identify specific customer cases or independently verify the stated capabilities.
Supplier typeThe supplier is explicitly identified as a Manufacturer/Factory and a limited company based in Tianjin, China. Its stated business focuses on petroleum equipment, oil pipes, pipe fittings, drilling and production tools, and automation equipment, matching the listed industrial product categories.
CertificationsThe supplier reports holding ISO 14001 and ISO 9001 management-system certifications. These are explicit certification records in the provided data, although certificate scope and validity dates are not given.
R&D capabilityThe supplier reports more than 30 independent intellectual property rights, an intelligent workshop, numerical-control automation equipment capabilities, an e-commerce platform, and recognition as a national science and technology-based small and medium-sized enterprise. These statements provide explicit evidence of innovation-related infrastructure and activity.
Production capacityThe supplier describes an integrated chain covering design, development, manufacturing, testing, and experimentation; operates 10 production lines; and has an intelligent workshop. It also reports oil equipment and pipe-related manufacturing experience, with stated order fulfillment within 15 workdays in both off-peak and peak seasons, supporting a positive production-capability assessment.
Customization capabilityThe stated full-cycle integration of design, development, manufacturing, testing, and experimentation, together with numerical-control automation equipment and an intelligent manufacturing model, indicates the ability to develop and manufacture tailored petroleum equipment. However, no specific customized project examples, engineering-change process, or minimum-order requirements are provided.
Send Inquiry
*To:
Tianjin Dongfanglong Petroleum Equipment Manufacture Co., Ltd.
Tianjin Dongfanglong Petroleum Equipment Manufacture Co., Ltd.*Content:
Supplier replies will be sent to your registered email
You may also like
Non-Magnetic Drill Collar with Drill Pipe Connection for Seamless Integration
US$1,000.00-20,000.00
1 Piece(MOQ)
Drill Collar with API If Connection for Seamless Pipe Integration
US$1,000.00-20,000.00
1 Piece(MOQ)
Casing Coupling or Collar 7" N80 LC for Oil and Gas Pipe
US$12.50
100 Pieces(MOQ)
Cold Rolled Slick Drill Collar for Enhanced Connection Fatigue Resistance
US$1,000.00-20,000.00
1 Piece(MOQ)
API Spiral and Slick Oilfield Non Magnetic Oil Seamless Steel Drill Pipe Collar for Drilling Rig Petroleum Equipment Tool
US$1,400.00-1,500.00
20 Pieces(MOQ)
Shot Peened Alloy Steel Drill Collar for Enhanced Connection Life
US$1,000.00-20,000.00
1 Piece(MOQ)
Oilfield Drift for Casing /Tubing /Drill Pipe/Hwdp /Drill Collar
Negotiable
1 Piece(MOQ)
Cheap Price Heavy Weight Drill Pipe 3-1/2~6-7/8 API 5D 5dp 5-1/2 Drill Collar for Oil Well
US$1,000.00-2,000.00
1 Piece(MOQ)
High-Quality API Non-Magnetic Oil Seamless Steel Drill Collar Pipe String Nc38 for Efficient Oilfield Drilling Rig Petroleum Equipment
US$1,700.00-1,800.00
10 pieces(MOQ)
API Drilling Pipe 3 1/2" Reg DTH Drill Collar for Well Drilling
US$1,000.00-2,000.00
1 Piece(MOQ)
API Drilling Pipe 3 1/2" Reg DTH Drill Collar for Well Drilling
US$500.00-1,500.00
1 Piece(MOQ)
Non-Magnetic Drill Collar& Heavy Weight Drill Pipe - Sizes for Oilfield Directional Drilling
US$199.00-999.00
1 Piece(MOQ)
Nmdc API 7-1 Nmdc Non-Magnetic Nc38 Drill Pipe Drill Collar for Well Drilling
US$2,100.00-2,300.00
1 Ton(MOQ)
Connection Drilling Tool Crossover Cementing Well Casing Pipe Float Shoe Float Collar
US$100.00-120.00
1 Piece(MOQ)
Oilfield Drift for Casing /Tubing /Drill Pipe/Hwdp /Drill Collar
US$250.00
1 Piece(MOQ)
Drifts for Drifting of Inside Diameter of Pipes Such as Casing, Tubing, Drill Pipes, Drill Collars
US$80.00-300.00
2 Pieces(MOQ)
Die Collar Downhole Taper Tap for Well Drilling Pipe Tool Fishing
US$99.00-5,835.00
1 Piece(MOQ)
API Standard Heavy Weight Drill Pipe Spiral Drill Collar for Oil Drilling
US$1,000.00-2,000.00
1 Piece(MOQ)



















