Casing Slips – Multi-Segment Design for Large-Diameter Casing (4½" to 30")

Product Overview

Slips are essential tools in drilling operations. They securely clamp and suspend the drill string or casing string inside the wellbore. A slip assembly typically consists of the slip body, gripping teeth (buttons), handles, and connectors.

Our casing slips are specifically designed for largediameter casing strings. They feature a multisegment, pinconnected structure – typically eleven or more segments – that provides a firm yet flexible grip. This design adapts well to casing outer diameter variations caused by wear, while keeping the assembly lightweight and strong.

Types & Classification

Slips can be classified by:

Application – Drill pipe slips, drill collar slips, casing slips.

Structure – Three-piece, four-piece, long/short combination.

Operation – Power-operated (automatic) or manual.

The casing slips described here are manual, multi-segment, and optimized for large casing sizes.

Key Features:

Wide size range – Fits casing from 4½" to 30" (114.3 mm to 762 mm).

API compliant – Manufactured to API 7K specifications.

Multi-segment construction – Typically 9 to 37 interconnected segments for even load distribution.

Robust yet lightweight – Easier to handle on the rig floor.

Tolerant of casing wear – The segmented design accommodates outer diameter variations.

Circular button inserts – Provide secure gripping without damaging the casing.

Technical Specifications & Available Sizes

Part 1 – Casing OD: 4½" to 10¾"

Part 2 – Casing OD: 11¾" to 30"

Note: The number of segments increases with casing diameter, from 9 segments for small sizes up to 37 segments for 30" casing. Each slip uses circular button inserts (part numbers listed) for secure gripping.

WHO WE ARE

Beijing Sunrise Technology Co., Ltd. (Sunrise), established in 2012 and headquartered in Beijing, has grown into a globally trusted supplier of oilfield equipment. With over a decade of experience, Sunrise stands as a reliable, high-quality partner for the world’s most demanding energy markets. 

From our very beginning, we set out to bridge the gap between China’s world-class manufacturing capabilities and the global oilfield industry’s need for reliable, cost-effective, and technically sound equipment. Today, Sunrise is recognized as one of the most consistent and quality-driven suppliers of oilfield machinery across the world, serving clients in more than 15 countries on five continents.

WHAT WE DO

“We trade oilfield equipment. But first, we trade our own peace of mind.”

As a trading company focused on oilfield equipment and tools, we help our clients source reliable products without the usual delays or documentation gaps.

When we receive an inquiry, we review it carefully to understand your specifications and delivery requirements. For quoting, we default to factories we have worked with for years — suppliers whose quality and performance we know firsthand. Rather than operating a single factory, Sunrise has built a cooperative ecosystem with China’s leading and most reputable oilfield equipment manufacturers. Over recent years, we have carefully selected and partnered with these manufacturers to offer our clients the most integrated product lines available. This strategy allows us to remain agile – we are not limited to one production line or one technology. Instead, we can source the best equipment for each specific application, ensuring that our customers receive exactly what they need, without compromise.

Along with every quotation, we provide the supporting documents you actually need: datasheets, relevant certifications, and material test reports with full traceability. This way, you have everything to review and approve from the very beginning — no back-and-forth chasing paperwork.

Our Core Advantages

✅ One-Stop Oilfield Equipment Supply

We offer an integrated product portfolio including workover and drilling rigs, cementing, fracturing, acidizing, stimulation services, oilfield environmental protection equipment, oil recovery machinery, and high-pressure fluid control pipes & manifolds.

✅ Certified Quality – API & ISO Standards

All products comply with API Spec 4F, 7K, 8C, 16C, ISO9001, ISO10012, ISO14001, and were recognized among the *Top 100 Chinese Oilfield Equipment Manufacturers (2001-2011)*.

✅ Strong Engineering Team for Full Lifecycle Support

Our in-house engineers support customers from pre-order consultation, production supervision, to rig-site commissioning and after-sales service.

✅ Global Export Experience

Sunrisetech equipment covers all major onshore oilfields in China and has been exported to more than 15 countries across 5 continents.

✅ Strategic Cooperation with China’s Top Manufacturers

We work closely with the most reputable Chinese factories to offer cost-effective, reliable, and integrated product lines without compromising quality.

Our Vision for the Future

Looking ahead, Sunrise aims to become the world’s most trusted oilfield equipment trading partner – not by being the largest, but by being the most reliable and responsive. We are committed to continuous improvement in three key areas:

 Operational efficiency – Helping our customers reduce non‑productive time and lower cost per barrel.

 Environmental responsibility-Expanding our line of environmental protection equipment and promoting sustainable practices across the industry.

 Global partnership-Building long‑term relationships with oil companies, drilling contractors, and service providers worldwide.

 We believe that the future of oilfield supply lies in smart integration, engineering transparency, and unwavering quality. Sunrise is ready to lead that future – one rig, one well, one solution at a time.