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Premium Oilfield Couplings & Fittings

API 5CT Certified Tubing & Casing Couplings, Thread Protectors, Nipples, and OCTG Solutions — Engineered for Reliability, Built for Performance.

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About XZOE Coupling

Xuzhou Oilfield Equipment Co., Ltd. and Xuzhou E&P Petroleum Equipment Co., Ltd. are part of the same industrial group, combining resources, expertise, and certifications to deliver high-performance oilfield coupling solutions globally.

With over 17 years of experience, we specialize in manufacturing API 5CT-certified tubing couplings, casing couplings, and wellhead fittings. Our facility spans over 30,000 m² in Xuzhou, Jiangsu Province, China, employing more than 150 skilled professionals and housing hundreds of advanced mechanical processing units.

We produce over 2 million couplings annually, offering more than 100 product types ranging from 2-3/8” to 20” in grades including J55, K55, N-80, L-80, P110, and Q-125. Custom solutions for float collars, float shoes, sucker rod couplings, and nipples are also available.

Company Profile
XZOE Factory
17+
Years Experience

Our Products

High-quality, API-certified oilfield components designed for durability, precision, and performance in demanding drilling environments.

2-7/8” L80 EU API 5CT Tubing Couplings

2-7/8” L80 EU API 5CT Tubing Couplings

Precision-engineered tubing couplings with external-upset (EU) thread, ideal for high-pressure environments.

  • Grade: L80
  • Standard: API 5CT
  • Thread: EU
2-7/8″ EU Thread Protectors

2-7/8″ EU Thread Protectors

Outer plastic, inner steel construction for maximum thread protection during transport and storage.

  • Type: Pin & Box
  • Material: Steel + Plastic
  • Application: Tubing Pipes
20″ K55 BC Casing Coupling

20″ K55 BC API 5CT Casing Coupling

Large-diameter casing coupling with buttress thread (BC), suitable for deep drilling applications.

  • Size: 20"
  • Grade: K55
  • Thread: BC
API 5CT Extra Heavy Nipple

API 5CT Extra Heavy Nipple

Precisely machined nipples with high strength and corrosion resistance for critical connections.

  • Spec: 2-7/8″ 8RD*6
  • Grade: J55
  • Thread: NU, EU
API Line Coupling

API Line Coupling (LP Thread)

High-pressure and corrosion-resistant line couplings for pipeline integrity.

  • Sizes: 2″ to 6″
  • Grades: X42, X46, X52, B
  • Thread: LP
Sucker Rod Couplings

Sucker Rod Couplings

Available in polished, sub, and standard types for rod string connections.

  • Sizes: 5/8″ to 1-1/8″
  • Grades: T, SM
  • Material: Alloy Steel
Float Collar & Float Shoes

Float Collar & Float Shoes

Custom-manufactured float equipment for casing string cementing operations.

  • Custom Sizes: Available
  • Grade: N80Q, P110
  • Thread: LTC, STC, BC
Pup Joints

Pup Joints

Short-length connections used to adjust casing or tubing string length with precision.

  • Sizes: 2-3/8″ to 13-3/8″
  • Grades: J55, K55, L80
  • Thread: EU, NU, BTC
View All Products

Why Choose XZOE Coupling?

We combine advanced manufacturing, strict quality control, and global logistics to deliver reliable oilfield solutions.

API 5CT Certified

All our couplings and fittings meet API 5CT standards, ensuring compliance with international oil and gas industry requirements.

2 Million+ Annual Capacity

With over 30,000 m² of manufacturing space and advanced CNC machinery, we ensure fast turnaround and large-volume supply.

Global Export Ready

Non-fumigated packaging, palletized or wooden case shipping, and FOB/CIF/CFR terms ensure smooth international delivery.

17+
Years Experience
2M+
Annual Output
100+
Product Types
150+
Team Members

Frequently Asked Questions

What standards do your couplings meet?

Our products are manufactured to API 5CT standards, with additional compliance to customer-specific requirements.

Can you provide custom sizes or grades?

Yes, we offer customized manufacturing for special clearance, grades (including Q-125), and thread types (EU, NU, BC, LTC, etc.).

What is your typical delivery time?

Standard orders are shipped within 15–30 days. In-stock items can be dispatched within 7 days.

Do you offer free samples?

Yes, we provide free samples for evaluation. Freight charges may apply depending on destination.

What packaging do you use?

Products are packed in pallets or wooden cases, non-fumigated and compliant with international export standards.

Get in Touch

For inquiries about our products, pricing, or custom orders, contact us directly.

86-516-81911866
86-15152103068
86-15152103068
[email protected]
86-516-81911866
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