API 5CT Seamless Tubing Couplings - EUE & NUE Types in 2-3/8" to 4-1/2" Sizes for Oilfield Applications
Price:
Negotiable
MOQ:
1
Delivery Time:
15 work days
Brand:
ZS
Product Description
API 5CT Standard Seamless Tubing Couplings
Premium seamless steel tubing couplings manufactured to API 5CT/5B specifications for reliable oilfield applications. Available in EUE and NUE types with comprehensive size ranges and multiple material grades.
Product Overview
Our tubing couplings serve as precision connectors for joining tubing or casing joints in oilfield operations. Each coupling features painted color codes for easy grade identification and undergoes rigorous quality control throughout manufacturing.
Available Specifications
Sizes: 2-3/8", 2-7/8", 3-1/2", 4", 4-1/2"
Standards: API 5CT/5B Compliant
Types: EUE (External Upset End), NUE (Non-Upset End)
Material Grades: J55, K55, N80, L80, P110
EUE Tubing Couplings
External Upset End couplings provide superior performance with outer diameters ranging from 77.80mm to 141.30mm. The EUE joint design offers enhanced tensile strength and pressure resistance exceeding the pipe body capabilities, making it ideal for demanding well conditions.
NUE Tubing Couplings
Non-Upset End couplings feature smaller outer diameters (73.02mm to 132.08mm) for applications where clearance is limited. While offering cost advantages, NUE couplings provide reliable performance for standard operating conditions.
Quality Assurance
- Raw material selection and mechanical testing
- Tensile strength and impact testing
- Chemical properties control and sulfide stress cracking tests
- Precise dimensional control (OD, wall thickness, length, straightness)
- Thread control (threads per inch, thread angle)
- Heat treatment for enhanced mechanical properties
- Material certification verification
- PSL-2 or PSL-3 compliance
Packaging
All couplings are securely packaged on wooden pallets and tightly wrapped with paper carton protection for safe transportation and storage.
Tubing Coupling Dimensions
| Type | 1.9" | 2-3/8" | 2-7/8" | 3-1/2" | 4" | 4-1/2" |
|---|---|---|---|---|---|---|
| NU | ✓ | ✓ | ✓ | ✓ | ✓ | |
| EU | ✓ | ✓ | ✓ | ✓ |
Casing Coupling Sizes
Available in SC, LC, and BTC types with outer diameters from 4-1/2" to 20" for comprehensive casing applications.
Similar Products
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Puyang Zhongshi Group Co., Ltd.
Location
Room2212, B Building, Tiandi Times Square, Weiyang District, Xi'an City, Shaanxi P.R., China
Contact Person
Liza