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Technical Specifications – SJ Petro Elevator Product Line

The following table summarizes our elevator specifications. All models are designed and manufactured according to API Spec 8C. Third‑party verification is available upon request.

Elevator Type	Model Series	Size Range (inch)	Load Capacity	Key Features
Single‑Joint Auxiliary Elevator	SJ, SP, SJX	2‑3/8″ – 36″	45–60 kN (4.5–6 tonnes)	Single‑joint design for casing/tubing handling in cementing and light drilling
Side‑Door Elevator	SLX, SX	2‑3/8″ – 30″	65–350 short tons	Side‑opening for fast pipe handling; square shoulder design
Center Latch Elevator (Drill Pipe)	DDZ, CDZ	2‑3/8″ – 6‑5/8″	100–750 short tons	18‑degree taper; forged alloy steel; NDT and hydrostatic tested per API 8C
Slip Type Elevator	Y, YC, LYT, HYT, MYT	1.05″ – 7‑5/8″	20–500 short tons	Hinged design; fits tubing, casing, drill pipe, ESP; interchangeable slip segments
Center Latch Casing Elevator	SX, SLX	9‑5/8″ – 36″	350–500 short tons	Large‑bore for heavy casing; square shoulder

Application Fields – Matching Elevator Type to Operation

Land Drilling Operations (ZJ20–ZJ90 Rigs)

Elevators needed: Center latch (DDZ/CDZ type) for drill pipe and drill collars; slip type (Y series) for fast tripping
Typical load range: 150–500 tons
Typical price range for a set: 1,500–1,500–6,000

Workover and Well Servicing (XJ Series)

Elevators needed: Auxiliary elevators (SJ/SP/SJX type) for tubing handling; lighter center latch elevators for smaller drill pipe
Typical load range: 35–150 tons
Typical price range for a set: 400–400–1,500

Cementing Operations

Elevators needed: Single‑joint auxiliary elevators (SJ/SP type) for running cementing strings and handling single casing joints
Typical load range: 45 kN (4.5 tonnes)
Typical price: 130–130–500

Offshore and Remote Drilling

Elevators needed: High‑load slip type or side‑door elevators (350–500 tons); marine‑grade coatings for corrosion resistance
Typical price range for a set: 3,000–3,000–8,000 (premium)

Why Choose SJ Petro for Elevators?

Backed by Sinopec – One of China Top 500 Manufacturers

SJ Petroleum Machinery Co., Ltd. is a wholly‑owned subsidiary of Sinopec Oilfield Equipment Corporation. We are ranked No.2 among China Top 10 Petroleum Drilling and Production Equipment Manufacturers and rated AAA by China Petrochemical Industry and Banks. When you buy from SJ Petro, you are buying from a manufacturer that supplies CNPC, Sinopec, and international operators across 30+ countries.

API 7K and 8C Certified

Our elevators are designed, manufactured, and tested to API Spec 8C – Specification for Drilling and Production Hoisting Equipment. We hold API 7K, 8C, and Q1 certifications and are subject to annual API audits. We can supply API monogrammed products and complete certification packages.

100% NDT Tested – No Compromises

Every critical elevator component undergoes magnetic particle inspection (MPI), ultrasonic testing (UT), and dye penetrant inspection (DPI) as required by API PSL levels. Hydraulic pressure tests are performed at 1.5 times rated load. Third‑party verification (BV, SGS, DNV) is available on request.

Low‑Temperature Impact Testing – Arctic‑Rated

Our national‑level low‑temperature impact testing laboratory qualifies elevator materials down to -60°C. For customers operating in Siberia, Northern Canada, or Alaska, we supply elevators with Charpy V‑notch impact‑tested steel, cold‑hardened latches, and low‑temperature lubricants. This technology has been proven on 11 low‑temperature drilling rigs delivered to Rosneft.

Global Export Experience – Documentation You Can Rely On

We have exported petroleum equipment to over 30 countries, including Russia, Kazakhstan, the United States, Canada, the Middle East, and Southeast Asia. Our export team provides material test reports (MTRs), dimensional inspection records, pressure test certificates, and customs documentation. GOST certification packages are available for Russian/Eurasian markets.

Complete Drilling Tool Ecosystem – One‑Stop Supply

We do not just sell elevators. Through our Kingdream brand, we manufacture the full range of downhole tools – drill bits, mud motors, MWD, jars, stabilizers, and NMDCs. You source everything from one manufacturer, with consistent quality and a single point of contact.

Frequently Asked Questions (FAQ)

Q1: What is the typical price range for an API 8C drilling elevator?

A: Elevator prices vary significantly by type and capacity:

Auxiliary elevators (single‑joint): 130–130–1,000
Mid‑range center latch / side‑door: 1,200–1,200–2,500
High‑capacity slip type: 2,000–2,000–8,000+

We provide firm quotes based on your specific requirements. Contact us with your pipe size and load needs for a precise price.

Q2: Why is there such a wide price difference between elevators?

A: The main cost drivers are:

Load capacity – Higher rated loads require more steel and larger forgings
Manufacturing method – Forged construction costs more than cast but offers superior strength
NDT and testing – 100% nondestructive testing and hydraulic proof testing add cost but ensure safety
API documentation – Full API 8C documentation packages require more engineering effort
Special ratings – Low‑temperature (-46°C) and sour service (H₂S) elevators use premium alloys and seals

Q3: Do your elevators meet API 8C requirements?

A: Yes. All SJ Petro elevators are designed, manufactured, and tested according to API Spec 8C – Specification for Drilling and Production Hoisting Equipment. We can supply API monogrammed elevators and complete test documentation, including material test reports, dimensional inspection records, and pressure test certificates.

Q4: How often should I replace my elevators?

A: Elevator replacement is based on inspection results, not calendar time. We recommend:

Annual visual inspection (cracks, deformation, latch function)
NDT every 2–3 years depending on usage frequency (magnetic particle inspection for ferrous bodies)
Replacement when cracks are detected or when dimensional wear exceeds API tolerances

Our API 8C elevators are designed for many years of service with proper care.

Q5: Can I get an elevator that handles multiple pipe sizes with interchangeable inserts?

A: Yes. Our slip type elevators (Y series) accept interchangeable slip segments and inserts, allowing the same elevator body to handle a range of pipe diameters from 1.05″ up to 7‑5/8″. This reduces your inventory costs and gives you flexibility across different jobs. Our center latch elevators can also handle a range of taper‑fit drill pipe sizes.

Q6: Do you offer low‑temperature elevators for Arctic drilling?

A: Yes. We have extensive experience in Arctic‑rated drilling equipment, having delivered 11 low‑temperature drilling rigs to Rosneft. Our low‑temperature elevators use impact‑tested steel validated at -46°C in our national‑level low‑temperature impact testing laboratory, with cold‑hardened latches and special lubricants that remain functional at extreme low temperatures. Additional insulation and heating options are available for the most severe Arctic conditions.

Q7: What is your typical lead time for elevator orders?

A: Lead times depend on the model and quantity:

Standard elevators (stock sizes): 2–4 weeks
Custom pipe size or load rating: 6–8 weeks
Arctic‑rated elevators: 8–10 weeks (includes material impact testing and certification)
Large fleet orders (10+ units): 10–12 weeks

We maintain limited inventory of popular sizes (2‑7/8″, 3‑1/2″, 5″) for emergency replacement.

Q8: Can I get third‑party inspection on my elevator order?

A: Yes. We welcome third‑party inspection by BV, SGS, DNV, ABS, or any certified inspection agency. We provide full access to our manufacturing facility in Jingzhou, Hubei province, and can arrange witnessed testing at your request. Additional fees for third‑party inspection are quoted separately.

Q9: Do you provide spare parts for elevators?

A: Yes. We maintain an inventory of replacement parts for all SJ Petro elevator models:

Replacement slip segments and inserts
Latch springs and pins
Bearing and bushing kits
Nameplate and serial number plates

For large operators, we can consign spare parts at your warehouse to minimize downtime.

Q10: How do I request a firm elevator price quote?

A: Please provide the following information to our sales team:

Elevator type needed (side‑door, center latch, slip type, or auxiliary)
Pipe diameter (inches or mm)
Maximum load requirement (tons)
Quantity (number of units)
Any special requirements (low‑temperature, sour service, API monogram, third‑party inspection)